The connection of the brain to the mind remains one of the most persistent mysteries in philosophy and neuroscience. Georg Northoff proposes a new approach to the so-called mind-body problem, drawing on an insight from physics: time structures all objects and events in the world, and all objects and events are in dynamic relationship. This also shapes the brain as it is part of the dynamic of the world as whole. In Neurowaves Northoff posits that the entire (...) world is structured by waves of time and argues that the passing of these waves through our brains – neurowaves – produces mental experience. The brain’s neural waves transform into mental waves; time and its dynamics are shared by brain and mind as their common currency. As in physics and biology, that radically changes our view. Copernicus showed how the earth moves and that its movements are just a tiny part of the universe’s passage of time. Darwin showed that the human species is one among many species passing through evolution’s timescales. Northoff calls for another Copernican revolution, replacing the mind-body problem with questions about the temporal-dynamic relationship between brain and world. Illustrated with vivid examples from different facets of the physical and biological world, Neurowaves provides captivating insights and an innovative, entertaining unravelling of the temporal connection of brain and mind. (shrink)

How did I come to non-reductive neurophilosophy? Let me sketch my biography a little. When I was young, I always wanted to study philosophy, the basic questions of the world, humans and the mind fascinated me – going down to the bottom of things. However, I did not want to study philosophy in isolation from the science. My fascination was and still is on the mind and specifically subjectivity as core feature of the mind. Subjectivity and mind are obviously key (...) topics in philosophy. However, having grown up from the mid/end of the 20 th century allowed me to also study the mind empirically and thus to complement philosophy by science. At my time there were no neuroscience programs yet. Hence, the only way to study the brain and its connection to the mind was to go into medicine which I did parallel to my philosophy studies. ER -. (shrink)

What makes our brain a brain? This is the central question posited in Unlocking the Brain. By providing a fascinating venture into different territories of neuroscience, psychiatry, and philosophy, the author takes a novel exploration of the brain's resting state in the context of the neural code, and its ability to yield consciousness.

This novel approach plunges the reader into the depths of our own brain.

In this paper we consider two major issues: conceptual–experimental approaches to the self, and the neuroanatomical substrate of the self. We distinguish content- and processed-based concepts of the self that entail different experimental strategies, and anatomically, we investigate the concept of midline structures in further detail and present a novel view on the anatomy of an integrated subcortical–cortical midline system. Presenting meta-analytic evidence, we show that the anterior paralimbic, e.g. midline, regions do indeed seem to be specific for self-specific stimuli. (...) We conclude that future investigation of the self need to develop novel concepts that are more empirically plausible than those currently in use. Different concepts of self will require novel experimental designs that include, for example, the brain’s resting state activity as an independent variable. Modifications of both conceptual and anatomical dimensions will allow an empirically more plausible account of the relationship between brain and self. (shrink)

What makes our brain a brain? This is the central question posited in Unlocking the Brain. By providing a fascinating venture into different territories of neuroscience, psychiatry, and philosophy, the author takes a novel exploration of the brain's resting state in the context of the neural code, and its ability to yield consciousness.

The excellent commentaries to our target paper hint upon three main issues, spatiotemporal neuroscience; neuro-mental relationship; and mind, brain, and world relationship. We therefore discuss briefly the history of Spatiotemporal Neuroscience. Distinguishing it from Cognitive Neuroscience and related branches, Spatiotemporal Neuroscience can be characterized by focus on brain activity, spatiotemporal relationship, and structure. Taken in this sense, Spatiotemporal Neuro-science allows one to conceive the neuro-mental relationship in dynamic spatiotemporal terms that complement and extend their cognitive characterization. Finally, more philosophical issues (...) like the need to dissolve the mind-body problem and the question for different levels of time including their nestedness are discussed. (shrink)

The nature of “the self” has been one of the central problems in philosophy and more recently in neuroscience. This raises various questions: Can we attribute a self to animals? Do animals and humans share certain aspects of their core selves, yielding a trans-species concept of self? What are the neural processes that underlie a possible trans-species concept of self? What are the developmental aspects and do they result in various levels of self-representation? Drawing on recent literature from both human (...) and animal research, we suggest a trans-species concept of self that is based upon what has been called a “core-self” which can be described by self-related processing as a specific mode of interaction between organism and environment. When we refer to specific neural networks, we will here refer to the underlying system as the “core-SELF.” The core-SELF provides primordial neural coordinates that represent organisms as living creatures—at the lowest level this elaborates interoceptive states along with raw emotional feelings while higher medial cortical levels facilitate affective-cognitive integration . Developmentally, SRP allows stimuli from the environment to be related and linked to organismic needs, signaled and processed within core-self structures within subcorical-cortical midline structures that provide the foundation for epigenetic emergence of ecologically framed, higher idiographic forms of selfhood across different individuals within a species. These functions ultimately operate as a coordinated network. We postulate that core SRP operates automatically, is deeply affective, and is developmentally and epigenetically connected to sensory-motor and higher cognitive abilities. This core-self is mediated by SCMS, embedded in visceral and instinctual representations of the body that are well integrated with basic attentional, emotional and motivational functions that are apparently shared between humans, non-human mammals, and perhaps in a proto-SELF form, other vertebrates. Such a trans-species concept of organismic coherence is thoroughly biological and affective at the lowest levels of a complex neural network, and culturally and ecologically molded at higher levels of neural processing. It allows organisms to selectively adapt to and integrate with physical and social environments. Such a psychobiologically universal, but environmentally diversified, concept may promote novel trans-species studies of the core-self across mammalian species. (shrink)

Neuroscience has made enormous progress in understanding the brain and its various neuro-sensory and neuro-cognitive functions. However, despite all progress, the model of the brain as well as its ontological characterization remain unclear. The aim in this first paper is the discussion of an empirically plausible model of the brain with the subsequent claim of a neuro-ecological model. Whitehead claimed that he inversed or reversed the Kantian notion of the subject by putting it back into the ecological context of the (...) world, the so-called reformist subjectivist principle. Based on empirical evidence about the experience-dependence of the brain’s spontaneous activity, I argue for an analogous inversion or reversion with regard to the model of brain: empirical evidence is well compatible with a neuro-ecological model which extends beyond and integrates both Humean neuro-sensory and Kantian neuro-cognitive models. I conclude that a neuro-ecological and process-based model of brain and its relationship to the world may offer a novel model of brain that carries major ontological implications as they shall be discussed in the second paper. (shrink)

What is neurophilosophy? Different variants of connecting neuroscience and philosophy emerged in recent years. Besides reductive, parallelistic, and neurophenomenological variants, we here focus on Non-Reductive Neurophilosophy as introduced by the author of this paper. NRNP can methodologically be characterized by the inclusion of multiple domains and various methodological strategies – this amounts to domain pluralism and method pluralism. That is combined with an iterative methodological movement between the different domains and, specifically conceptual and empirical domains resulting in concept-fact iterativity. Such (...) non-reductive neurophilosophical approach can make major contributions to both neuroscience and philosophy. Concerning the latter, we demonstrate how a non-reductive neurophilosophical approach allows taking into view a deeper neuro-ecological and spatiotemporal layer of Martin Heidegger’s Fundamental ontology and its “being in the world”. This may also require a more fundamental approach to consciousness in both its phenomenological features and neural basis – this has recently been proposed in the “Temporo-spatial theory of consciousness”. In sum, due to its particular methodological strategy, NRNP allows providing a broader more comprehensive framework to philosophical problems like subjectivity, consciousness, and mind-body problem. Moreover, NRNP may provide a novel deeper framing and reading of historical authors which may allow to connect them to current and systematic philosophical and even neuroscientific issues. ER -. (shrink)

Though the brain and its neuronal states have been investigated extensively, the neural correlates of mental states remain to be determined. Since mental states are experienced in first-person perspective and neuronal states are observed in third-person perspective, a special method must be developed for linking both states and their respective perspectives. We suggest that such method is provided by First-Person Neuroscience. What is First-Person Neuroscience? We define First-Person Neuroscience as investigation of neuronal states under guidance of and on orientation to (...) mental states. An empirical example of such methodological approach is demonstrated by an fMRI study on emotions. It is shown that third- and first-person analysis of data yield different results. First-person analysis reveals neural activity in cortical midline structures during subjective emotional experience. Based on these and other results neural processing in cortical midline structures is hypothesized to be crucially involved in generating mental states. Such direct linkage between first- and third-person approaches to analysis of neural data allows insight into the "point of view from within the brain", that is what we call the First-Brain Perspective. In conclusion, First-Person Neuroscience and First-Brain Perspective provide valuable methodological tools for revealing the neuronal correlate of mental states. (shrink)

While neuroscience has made enormous progress in understanding the brain, the implications of these empirical findings for ontological questions in philosophy including the mind–body problem remain yet unclear. In the first paper, I discussed the model of brain that as implied and supported by the empirical data. This leads me now to the question of an empirically plausible ontology of brain. Therefore, the aim in this second paper is the ontological characterization of the brain in terms of a process-based ontology (...) that avoids what Whitehead described as “simple location” and “fallacy of misplaced concreteness”. The discussion of the model of the brain is complemented by developing a process-based ontological characterization of the brain. Specifically, as based on Whitehead, I argue that “simple location” of the brain as thing or object in time and space amounts to nothing but an abstraction rendering what Whitehead described as “fallacy of misplaced concreteness”. Instead of describing the brain as static, non-temporal and isolated thing or object, I characterize the brain ontologically by dynamic, temporal, and relational processes. This leads me to a process-based ontology of brain which may be specified in spatiotemporal terms. Since the world’s larger spatiotemporal range or scale contains, e.g., nests, the smaller one of the brain, I characterize their ontological relationship by “spatiotemporal nestedness” and “spatiotemporal directedness”. Such spatiotemporal relationship between world and brain precludes the confusion between the world as whole and the brain as part, e.g., “mereological confusion”. I conclude that process-based or better, more specifically, spatiotemporal ontology of the brain and its relationship to the world may offer novel views on the question for the ontological relationship between mind and brain, e.g., the mind–brain problem, by converting or reformulating it as “world-brain problem”. (shrink)

What is time? Is time real, or a mere illusion? We seem to feel the passage of time in our consciousness but are doomed to encounter great difficulty when trying to get a deeper grip on the nature of time. As Augustine famously remarked, "if no one asks me about what time is, I know what it is, but if I wish to explain it to him who asks, I do not know". The present essay does not aim so much (...) at giving a complete answer to this intricate and difficult question as to focus on Zhuangzi to excavate the idea of time inherent in his philosophical writings. A second aim is to show how it relates to some of the contemporary concerns about time. More specifically, our concern is not about... (shrink)

Differential diagnosis of motor symptoms, for example, akinesia, may be difficult in clinical neuropsychiatry. Symptoms may be either of neurologic origin, for example, Parkinson's disease, or of psychiatric origin, for example, catatonia, leading to a so-called “conflict of paradigms.” Despite their different origins, symptoms may appear more or less clinically similar. Possibility of dissociation between origin and clinical appearance may reflect functional brain organisation in general, and cortical-cortical/subcortical relations in particular. It is therefore hypothesized that similarities and differences between Parkinson's (...) disease and catatonia may be accounted for by distinct kinds of modulation between cortico-cortical and cortico-subcortical relations. Catatonia can be characterized by concurrent motor, emotional, and behavioural symptoms. The different symptoms may be accounted for by dysfunction in orbitofrontal-prefrontal/parietal cortical connectivity reflecting “horizontal modulation” of cortico-cortical relation. Furthermore, alteration in “top-down modulation” reflecting “vertical modulation” of caudate and other basal ganglia by GABA-ergic mediated orbitofrontal cortical deficits may account for motor symptoms in catatonia. Parkinson's disease, in contrast, can be characterized by predominant motor symptoms. Motor symptoms may be accounted for by altered “bottom-up modulation” between dopaminergic mediated deficits in striatum and premotor/motor cortex. Clinical similarities between Parkinson's disease and catatonia with respect to akinesia may be related with involvement of the basal ganglia in both disorders. Clinical differences with respect to emotional and behavioural symptoms may be related with involvement of different cortical areas, that is, orbitofrontal/parietal and premotor/motor cortex implying distinct kinds of modulation – “vertical” and “horizontal” modulation, respectively. Key Words: Bottom-up modulation; catatonia; horizontal modulation; Parkinson's disease; top-down modulation; vertical modulation. (shrink)

Objective: The dopamine hypothesis is one of the most influential theories of the neurobiological background of schizophrenia (SCZ). However, direct evidence for abnormal dopamine-related subcortical-cortical circuitry disconnectivity is still lacking. The aim of this study was therefore to test dopamine-related substantia nigra (SN)-based striato-thalamo-cortical resting-state functional connectivity (FC) in SCZ. Method: Based on our a priori hypothesis, we analyzed a large sample resting-state functional magnetic resonance imaging (fMRI) dataset from first-episode drug-naïve SCZ patients (n = 112) and healthy controls (n (...) = 82) using the SN as the seed region for an investigation of striato-thalamo-cortical FC. This was done in the standard band of slow frequency oscillations and then in its subfrequency bands (Slow4 and Slow5). Results: The analysis showed in SCZ: (1) reciprocal functional hypo-connectivity between SN and striatum, with differential patterns for Slow5 and Slow4; (2) functional hypo-connectivity between striatum and thalamus, as well as functional hyper-connectivity between thalamus and sensorimotor cortical areas, specifically in Slow4; (3) correlation of thalamo-sensorimotor functional hyper-connectivity with psychopathological symptoms. Conclusions: We demonstrate abnormal dopamine-related SN-based striato-thalamo-cortical FC in slow frequency oscillations in first-episode drug-naive SCZ. This suggests that altered dopaminergic function in the SN leads to abnormal neuronal synchronization (as indexed by FC) within subcortical-cortical circuitry, complementing the dopamine hypothesis in SCZ on the regional level of resting-state activity. (shrink)

Does artificial intelligence (AI) exhibit consciousness or self? While this question is hotly debated, here we take a slightly different stance by focusing on those features that make possible both, namely a basic or fundamental subjectivity. Learning from humans and their brain, we first ask what we mean by subjectivity. Subjectivity is manifest in the perspectiveness and mineness of our experience which, ontologically, can be traced to a point of view. Adopting a non-reductive neurophilosophical strategy, we assume that the point (...) of view exhibits two layers, a most basic neuroecological and higher order mental layer. The neuroecological layer of the point of view is mediated by the timescales of world and brain, as further evidenced by empirical data on our sense of self. Are there corresponding timescales shared with the world in AI and is there a point of view with perspectiveness and mineness? Discussing current neuroscientific evidence, we deny that current AI exhibits a point of view, let alone perspectiveness and mineness. We therefore conclude that, as per current state, AI does not exhibit a basic or fundamental subjectivity and henceforth no consciousness or self is possible in models such as ChatGPT and similar technologies. (shrink)

The term ``neurophilosophy'' is often used either implicitly or explicitly for characterizing the investigation of philosophical theories in relation to neuroscientific hypotheses. The exact methodological principles and systematic rules for a linkage between philosophical theories and neuroscientific hypothesis, however, remain to be clarified. The present contribution focuses on these principles, as well as on the relation between ontology and epistemology and the characterization of hypothesis in neurophilosophy. Principles of transdisciplinary methodology include the `principle of asymmetry', the `principle of bi-directionality' and (...) the `principle of transdisciplinary circularity'. The `principle of asymmetry' points to an asymmetric relationship between logical and natural conditions. The `principle of bi-directionality' claims for the necessity of bi-directional linkage between natural and logical conditions. The `principle of transdisciplinary circularity' describes systematic rules for mutual comparison and cross-conditional exchange between philosophical theory and neuroscientific hypotheses. The relation between ontology and epistemology no longer is determined by ontological presuppositions i.e. ``ontological primacy''. Instead, there is correspondence between different `epistemological capacities' and different kinds of ontology which consecutively results in ``epistemic primacy'' and ``ontological pluralism''. The present contribution concludes by rejecting some so-called `standard-arguments' including the `argument of circularity', the `argument of categorical fallacy', the `argument of validity' and the `argument of necessity'. (shrink)

"Quasi-memories," necessarily presupposing a distinction between an "experiencing" and a "remembering" person, are considered by Parfit and Shoemaker as necessary and/or sufficient criteria for personal identity. However, the concept of "q-memories" is rejected by Schechtman since, according to her, neither "content" and "experience" can be separated from each other in "q-memories" ("principal inseparability") nor can they be distinguished from delusions/confabulations ("principal indistinguishability"). The purpose of the present paper is to demonstrate that, relying on a neurophilosophical approach, both arguments can be (...) rejected. Neuropsychological research shows that "contents" of memories are classified according to the accompanying psychological state such that the same "content" can be classified either as auto- or heterobiographical by the respective "experience." Since "content" and "experience" can be separated from each other, the argument of "principal inseparability" must be rejected on empirical grounds. In addition, as demonstrated in an example of a schizophrenic patient, "q-memories" can be distinguished from delusions/confabulations considering the ability to distinguish between different sources of autobiographical memories as a differential criterion. In conclusion, both arguments by Schechtman against the concept of "q-memories" have to be rejected on the basis of neurophilosophical considerations. Consequently, the concept of "q-memories" can be considered as compatible with current empirical knowledge. (shrink)

Searle suggests biological naturalism as a solution to the mind-brain problem that escapes traditional terminology with its seductive pull towards either dualism or materialism. We reconstruct Searle's argument and demonstrate that it needs additional support to represent a position truly located between dualism and materialism. The aim of our paper is to provide such an additional argument. We introduce the concept of "autoepistemic limitation" that describes our principal inability to directly experience our own brain as a brain from the first-person (...) perspective. The neglect of the autoepistemic limitation leads to inferences from epistemic properties to ontological features - we call this "epistemic-ontological inference." Searle attempts to avoid such epistemic-ontological inference but does not provide a sufficient argument. Once the autoepistemic limitation is considered, epistemic-ontological inference can be avoided. As a consequence, one can escape traditional terminology with its seductive pull towards either dualism or materialism. (shrink)

The James–Lange theory considers emotional feelings as perceptions of physiological body changes. This approach has recently resurfaced and modified in both neuroscientific and philosophical concepts of embodiment of emotional feelings. In addition to the body, the role of the environment in emotional feeling needs to be considered. I here claim that the environment has not merely an indirect and thus instrumental role on emotional feelings via the body and its sensorimotor and vegetative functions. Instead, the environment may have a direct (...) and non-instrumental, i.e., constitutional role in emotional feelings; this implies that the environment itself in the gestalt of the person–environment relation is constitutive of emotional feeling rather than the bodily representation of the environment. Since the person–environment relation is crucial in this approach, I call it the relational concept of emotional feeling. After introducing the relational concept of emotional feeling, the present paper investigates the neurophilosophical question whether current neuroimaging data on human emotion processing and anatomical connectivity are empirically better compatible with the “relational” or the “embodied” concept of emotional feeling. These data lend support to the empirical assumption that neural activity in subcortical and cortical midline regions code the relationship between intero- and exteroceptive stimuli in a relational mode, i.e. their actual balance, rather than in a translational mode, i.e., by translating extero- into interoceptive stimulus changes. Such intero-exteroceptive relational mode of neural coding may have implications for the characterization of emotional feeling with regard to phenomenal consciousness and intentionality. I therefore conclude that the here advanced relational concept of emotional feeling may be considered neurophilosophically more plausible and better compatible with current neuroscientific data than the embodied concept as presupposed in the James–Lange theory and its modern neuroscientific and philosophical versions. (shrink)

Disorders of consciousness (DoC)—that is, unresponsive wakefulness syndrome/vegetative state and minimally conscious state—are debilitating conditions for which no reliable markers of consciousness recovery have yet been identified. Evidence points to the GABAergic system being altered in DoC, making it a potential target as such a marker.

Ethical questions have traditionally been approached through conceptual analysis. Inspired by the rapid advance of modern brain imaging techniques, however, some ethical questions appear in a new light. For example, hotly debated trolley dilemmas have recently been studied by psychologists and neuroscientists alike, arguing that their findings can support or debunk moral intuitions that underlie those dilemmas. Resulting from the wedding of philosophy and neuroscience, neuroethics has emerged as a novel interdisciplinary field that aims at drawing conclusive relationships between neuroscientific (...) observations and normative ethics. A major goal of neuroethics is to derive normative ethical conclusions from the investigation of neural and psychological mechanisms underlying ethical theories, as well as moral judgments and intuitions. The focus of this article is to shed light on the structure and functioning of neuroethical arguments of this sort, and to reveal particular methodological challenges that lie concealed therein. We discuss the methodological problem of how one can—or, as the case may be, cannot—validly infer normative conclusions from neuroscientific observations. Moreover, we raise the issue of how preexisting normative ethical convictions threaten to invalidate the interpretation of neuroscientific data, and thus arrive at question-begging conclusions. Nonetheless, this is not to deny that current neuroethics rightly presumes that moral considerations about actual human lives demand empirically substantiated answers. Therefore, in conclusion, we offer some preliminary reflections on how the discussed methodological challenges can be met. (shrink)

Recent studies have demonstrated neural overlap between resting state activity and self-referential processing. This “rest-self” overlap occurs especially in anterior cortical midline structures like the perigenual anterior cingulate cortex (PACC). However, the exact neurotemporal and biochemical mechanisms remain to be identified. Therefore, we conducted a combined electroencephalography (EEG)-magnetic resonance spectroscopy (MRS) study. EEG focused on pre-stimulus (e.g., prior to stimulus presentation or perception) power changes to assess the degree to which those changes can predict subjects’ perception (and judgment) of subsequent (...) stimuli as high or low self-related. MRS measured resting state concentration of glutamate, focusing on PACC. High pre-stimulus (e.g., prior to stimulus presentation or perception) alpha power significantly correlated with both perception of stimuli judged to be highly self-related and with resting state glutamate concentrations in the PACC. In sum, our results show (i) pre-stimulus (e.g., prior to stimulus presentation or perception) alpha power and resting state glutamate concentration to mediate rest-self overlap that (ii) dispose or incline subjects to assign high degrees of self-relatedness to perceptual stimuli. (shrink)

Emotion theories in present philosophical discussion propose different models of relationship between feeling and appraisal. The multicomponent model considers appraisal as separate component and distinguishes it from feeling and physiological body changes thus presupposing what may be called 'disembodied' and 'disembedded' appraisal as representational. The recently emerged concept of enactment, in contrast, argues that appraisal is closely linked to feeling and physiological body changes presupposing what can be called 'embodied' and 'embedded' appraisal as relational. The aim of the paper is (...) to investigate which concept of appraisal, the 'disembedded' or the 'embedded' one, is better compatible with current neuroimaging data on emotion processing and thus neurophilosophically more tenable. The 'disembodied' and 'disembedded' concept implies distinct and independent brain regions underlying feeling and appraisal whereas 'embodied' and 'embedded' appraisal implies overlapping and dependent brain regions. Recent neuroimaging studies demonstrate that medial and lateral prefrontal cortical regions are involved in both feeling and appraisal and that there seems to be reciprocal modulation between these regions. Though preliminary, these data suggest that feeling and appraisal are associated with different patterns of neural activity across overlapping and interdependent brain regions. I therefore conclude that current neuroscientific evidence is rather in favor of the 'embodied' and 'embedded' concept of appraisal as relational than the one of 'disembodied' and 'disembedded' appraisal as representational that is presupposed in current multicomponent theories of emotions. (shrink)

In philosophy, the criteria for personhood (PH) at a specific point in time (synchronic), and the necessary and sufficient conditions of personal identity (PI) over time (diachronic) are traditionally separated. Hence, the transition between both timescales of a person's life remains largely unclear. Personal habits reflect a decision-making (DM) process that binds together synchronic and diachronic timescales. Despite the fact that the actualization of habits takes place synchronically, they presuppose, for the possibility of their generation, time in a diachronic sense. (...) The acquisition of habits therefore rests upon PI over time; that is, the temporal extension of personal decisions is the necessary condition for the possible development of habits. Conceptually, habits can thus be seen as a bridge between synchronic and diachronic timescales of a person's life. In order to investigate the empirical mediation of this temporal linkage, we draw upon the neuronal mechanisms underlying DM; in particular on the distinction between internally and externally guided DM. Externally guided DM relies on external criteria at a specific point in time (synchronic); on a neural level, this has been associated with lateral frontal and parietal brain regions. In contrast, internally guided DM is based on the person's own preferences that involve a more longitudinal and thus diachronic timescale, which has been associated with the brain's intrinsic activity. Habits can be considered to reflect a balance between internally and externally guided DM, which implicates a particular temporal balance between diachronic and synchronic elements, thus linking two different timescales. Based on such evidence, we suggest a habit-based neurophilosophical approach of PH and PI by focusing on the empirically-based linkage between the synchronic and diachronic elements of habits. By doing so, we propose to link together what philosophically has been described and analyzed separately as PH and PI. (shrink)

The exact relationship between qualia and the function of the brain remains elusive. The present approach focuses on the linkage between the neural mechanisms of the brain and the phenomenological and epistemological mechanisms of qualia. It is hypothesized that distinct characteristics of the ventral prefrontal cortical function may be crucial for the generation of these phenomenological and epistemological mechanisms this is reflected in the so-called 'neurophenomenological hypothesis'. The 'phenomenological—qualitative' character of qualia may be related with an early activation in the (...) ventromedial prefrontal cortex . The experience of 'presence' in qualia may be accounted for by a co-activation in both VMPFC and hippocampus and a concurrent deactivation in the ventrolateral prefrontal cortex and posterior cingulate. Past and future temporal dimensions may therefore be integrated within the experience of events, which in turn may account for the phenomenal characteristics of 'presence' and thus 'phenomenal time'. 'Non-structural homogeneity' in the experience of qualia may be accounted for by either 'supramodal character' or 'modality unspecifity' of >the VMPFC. The 'heterogenous' stimuli can therefore be included and integrated within one 'homogenous' event as experienced in qualia. Finally, 'transparency' in the experience of qualia may be related with the 'reciprocal suppression' between VMPFC and VLPFC. Simultaneous cognitive processing during the experience of qualia may be suppressed and may consequently account for their transparent character. Due to several methodological limitations, these 'neurophenomenological hypotheses' must be considered as preliminary. However, they may nevertheless serve as a starting point for the development of a more elaborate neuroscientific hypothesis of qualia in the future. (shrink)

Spontaneous activity levels prior to stimulus presentation can determine how that stimulus will be perceived. It has also been proposed that such spontaneous activity, particularly in the default-mode network (DMN), is involved in self-related processing. We therefore hypothesised that pre-stimulus activity levels in the DMN predict whether a stimulus is judged as self-related or not. Method: Participants were presented in the MRI scanner with a white noise stimulus that they were instructed contained their name or another. They then had to (...) respond with which name they thought they heard. Regions where there was an activity level difference between self and other response trials two seconds prior to the stimulus being presented were identified. Results: Pre-stimulus activity levels were higher in the right temporoparietal junction (RTPJ), the right temporal pole (RTP), and the left superior temporal gyrus in trials where the participant responded that they heard their own name than trials where they responded that they heard another. Conclusion: Pre-stimulus spontaneous activity levels in particular brain regions, largely overlapping with the DMN, predict the subsequent judgement of stimuli as self-related. This extends our current knowledge of self-related processing and its apparent relationship with intrinsic brain activity in what can be termed a rest-self overlap. (shrink)

Present discussions in philosophy of mind focuson ontological and epistemic characteristics ofmind and on mind-brain relations. In contrast,ontological and epistemic characteristics ofthe brain have rarely been thematized. Rather,philosophy seems to rely upon an implicitdefinition of the brain as "neuronal object''and "object of recognition'': henceontologically and epistemically distinct fromthe mind, characterized as "mental subject'' and"subject of recognition''. This leads to the"brain-paradox''. This ontological and epistemicdissociation between brain and mind can beconsidered central for the problems of mind andmind-brain relations that have yet (...) to beresolved in philosophy. The brain itself hasnot been thematized epistemically andontologically, leading to a "brain problem''.The epistemic and ontological dissociationbetween brain and mind presupposes an"isolated'' picture of the brain, characterizedby context-independence (i.e. "isolation'' frombody and environment). We can describe thisview as an extrinsic relationship betweenbrain, body and environment. However, based onrecent empirical findings about body image andphantom sensations, we can no longer considerthe brain as context-independent or "isolated''from its bodily and environmental context.Instead, the brain must be considered"embedded''. Within the context of 'embeddment',brain and bodily/environmental context seemmutually to determine each other, and hence bereciprocally dependent on each other. We candescribe this as an intrinsic relationshipbetween brain, body and environment.Defining the brain as "embedded'' undermines theepistemic and ontological dissociation betweenbrain and mind and consequently resolves the"brain-paradox''. This resolution sheds novellight on problems of mind and mind-brainrelations by relativizing both. It is thereforeconcluded that philosophy should thematizeontological and epistemic characteristics ofthe brain, thereby taking into account the"brain problem'' and developing a "philosophy ofthe brain''. This approach not only opens a newfield in philosophy but also extends the focusof empirical investigation in the neurosciencesto take into account the intrinsic relationshipbetween brain, body and environment. (shrink)

Die grosse Frage nach Bewusstsein und Selbsterkenntnis im Licht von Philosophie und Neurowissenschaft.

Emotional feeling can be defined as the affective constituent of emotions representing a subjective experience such as, for example, feeling love or hate. Several recent neuroimaging studies have focused on this affective component of emotions thereby aiming to characterise the underlying neural correlates. These studies indicate that the orbitomedial prefrontal cortex is crucially involved in the processing of emotional feeling. It is the aim of this paper to analyse the extent to which the present state of the art in neuroscience (...) enables emotional feeling to be related to specific brain regions. In the first step, methodological and theoretical problems in the investigation of emotional feeling will be discussed leading to the characterisation of a “twofold gap.” This gap represents (a) the theoretical difficulties encountered in transforming vivid subjective experience into a theoretical psychological concept, and (b) the problems of implementing such a concept by performing empirical studies. Based on these considerations we suggest approaches for future empirical studies. In the second step, a group of functional neuroimaging studies focusing on the affective constituent of emotions will be discussed in detail with regard to the theoretical problems outlined in the first step. (shrink)

Lewis discusses the dynamic mechanisms of emotional-cognitive integration. I argue that he neglects the self and its neural correlate. The self can be characterized as an emotional-cognitive unity, which may be accounted for by the interplay between anterior and posterior medial cortical regions. I propose that these regions form an anatomical, physiological, and psychological unity, the cortical midline structures (CMSs).

There is much discussion about the concept of self and its relation to personal identity in both philosophy and neuroscience. I here propose a “spatiotemporal model” of identity that is based on various empirical findings in recent neuroscience. I propose that the temporal features of identity as pointed out in my spatiotemporal model provide the temporal ground of the self and its continuity over time on the basis of the scale-free and temporally-structured neuronal activity in the brain’s spontaneous activity in (...) cortical midline structures. Moreover, I characterize such self-continuity by spatiotemporal memory that encodes spatial and temporal structures signifying events as distinguished from the encoding of contents as in a cognitive memory. I conclude that such spatiotemporal model of self and personal identity does not only provide a proper conceptual account of the empirical data but also novel conceptualizations that are relevant to the philosophical discussion. (shrink)

Kripke presented one of the most inuential modal arguments against psycho-physical identities. His argument as exemplified by the identity of pain and its respective neural correlates will be analysed in detail. It shall be argued that his reasoning relies on an implausible conception of introspection implying an implausible conception of mental phenomena such as pain. His account does not consider possible interaction of pain and attention as well as the interaction of pain with other psychological factors. Theoretical and empirical evidences (...) for a diferent account of pain, which represent a challenge for Kripke's argument, will be discussed. (shrink)

The excellent and highly interesting commentaries address the following concerns: (1) neuroanatomy and neurophysiology of catatonia; (2) cognitive-motor deficits in catatonia; (3) conceptual issues; (4) general methodology in neuropsychiatric research; and (5) neurophilosophical implications. The specific problems, issues, and aspects raised by the different commentators are grouped under these categories in Table R1 presented below. These five areas of concern are then discussed in the order listed in the five sections of the Response.