Commentary on John Searle's Article John Searle presents a philosopher's view of how conscious experience and free action relate to brain function. That view demands an examination by a neuroscientist who has experimentally investigated this issue.

I have taken an experimental approach to this question. Freely voluntary acts are preceded by a specific electrical change in the brain that begins 550 ms before the act. Human subjects became aware of intention to act 350-400 ms after RP starts, but 200 ms. before the motor act. The volitional process is therefore initiated unconsciously. But the conscious function could still control the outcome; it can veto the act. Free will is therefore not excluded. These findings put constraints on (...) views of how free will may operate; it would not initiate a voluntary act but it could control performance of the act. The findings also affect views of guilt and responsibility. But the deeper question still remains: Are freely voluntary acts subject to macro-deterministic laws or can they appear without such constraints, non-determined by natural laws and ‘truly free'? I shall present an experimentalist view about these fundamental philosophical opposites. (shrink)

I have taken an experimental approach to this question. Freely voluntary acts are preceded by a specific electrical change in the brain that begins 550 ms before the act. Human subjects became aware of intention to act 350-400 ms after RP starts, but 200 ms. before the motor act. The volitional process is therefore initiated unconsciously. But the conscious function could still control the outcome; it can veto the act. Free will is therefore not excluded. These findings put constraints on (...) views of how free will may operate; it would not initiate a voluntary act but it could control performance of the act. The findings also affect views of guilt and responsibility. But the deeper question still remains: Are freely voluntary acts subject to macro-deterministic laws or can they appear without such constraints, non-determined by natural laws and ‘truly free'? I shall present an experimentalist view about these fundamental philosophical opposites. (shrink)

The chief goal of Velmans' article is to find a way to solve the problem of how conscious experience could have bodily effects. I shall discuss his treatment of this below. First, I would like to deal with Velmans' treatment of my own studies of volition and free will in relation to brain processes. Unconscious Initiation and Conscious Veto of Freely Voluntary Acts Velmans appropriately refers to our experimental study that found that onset of an electrically observable cerebral process preceded (...) the appearance of the subject's awareness of the conscious wish to act, by at least 350 msec. That indicated that the volitional process is initiated unconsciously. Velmans uses the term preconscious instead of unconscious. But, in fact, subjects have no reportable awareness or intuitive feeling that the brain has started a process before their conscious wish/urge to act appears. Unconscious initiation of the voluntary process appeared to mean that conscious free will could not actually 'tell' the brain to begin its preparation to carry out a voluntary act. (shrink)

Behav. and Brain Sci., 8, 558-566. Libet, B. (1987). 'Consciousness: Conscious, Subjective Experience.' In Encyclopedia of Neuroscience , ed. G. Adelman. ...

The paper begins by contrasting the unitary nature of conscious experience with the demonstrable localization of neural events. Philosophers and neuroscientists have developed models to account for this paradox, but they have yet to be tested empirically. The author proposes a `Conscious Mental Field', which is produced by, but is phenomenologically distinct from, brain activity. The hypothesis is, in principle, open to experimental verification. The paper suggests appropriate surgical procedures and some of the difficulties that would need to be overcome (...) in such an experiment. (shrink)

Sensation elicited by a skin stimulus was subjectively reported to feel stronger when followed by a stimulus to somatosensory cerebral cortex , even when C was delayed by up to 400 ms or more. This expands the potentiality for retroactive effects beyond that previously known as backward masking. It also demonstrates that the content of a sensory experience can be altered by another cerebral input introduced after the sensory signal arrives at the cortex. The long effective S-C intervals support the (...) thesis that a duration of cortical activity of up to 0.5 s is required before awareness of a sensory stimulus is developed. (shrink)

The problem of free will lies at the heart of modern scientific studies of consciousness. An influential series of experiments by Libet has suggested that conscious intentions arise as a result of brain activity. This contrasts with traditional concepts of free will, in which the mind controls the body. A more recent study by Haggard and Eimer has further examined the relation between intention and brain processes, concluding that conscious awareness of intention is linked to the choice or selection (...) of a specific action, and not to the earliest initiation of action processes. The exchange of views in this paper further explores the relation between conscious intention and brain activity. (shrink)

Solutions to the ‘hard problem’ of consciousness must accept conscious experience as a fundamental non-reducible phenomenon in nature, as Chalmers suggests. Chalmers proposes candidates for an acceptable theory, but I find basic flaws in these. Our own experimental investigations of brain processes causally involved in the development of conscious experience appear to meet Chalmers’ requirement. Even more directly, I had previously proposed a hypothetical ‘conscious mental field’ as an emergent property of appropriate neural activities, with the attributes of integrated subjective (...) experience and a causal ability to modulate some neural processes. This theory meets all the requirements imposed by the ‘hard problem’ and, significantly, it is experimentally testable. (shrink)

In previous research Libet discovered that a critical time period for neural activation is necessary in order for a stimulus to become conscious. This necessary time period varies from subject to subject. In this current study, six subjects for whom the time for neural activation of consciousness had been previously determined were administered a battery of psychological tests on the basis of which ratings were made of degree of repressiveness. As hypothesized, repressive subjects had a longer critical time period (...) for neural activation of consciousness, suggesting the possibility that this neurophysiological time factor is a necessary condition for the development of repression. (shrink)

We all seem to think that we do the acts we do because we consciously choose to do them. This commonsense view is thrown into dispute by Benjamin Libet's eyebrow-raising experiments, which seem to suggest that conscious will occurs not before but after the start of brain activity that produces physical action.

Common Sense and Science from Aristotle to Reid reveals that thinkers have pondered the nature of common sense and its relationship to science and scientific thinking for a very long time. It demonstrates how a diverse array of neglected early modern thinkers turn out to have been on the right track for understanding how the mind makes sense of the world and how basic features of the human mind and cognition are related to scientific theory and practice. Drawing on a (...) wealth of primary sources and scholarship from the history of ideas, cognitive science, and the history and philosophy of science, this book helps readers understand the fundamental historical and philosophical relationship between common sense and science. (shrink)

This paper offers an analysis of the nature of epistemic trust. With increased philosophical attention to social epistemology in general and testimony in particular, the role for an epistemic or intellectual version of trust has loomed large in recent debates. But, too often, epistemologists talk about trust without really providing a sustained examination of the concept. After some introductory comments, I begin by addressing various components key to trust simpliciter. In particular, I examine what we might think of when we (...) consider what it means to place trust in someone. Once we have examined trust in general, we can modify this discussion to derive an epistemic version of trust—placing trust in someone for an epistemic reason. I argue that ET includes four components: belief, communication, reliance, and confidence. The first two sets are distinctively epistemic and the second set of conditions form the core of any kind of trust. Put together,.. (shrink)

This paper begins with the oft-repeated claim that having faith involves trust in God. Taking this platitude seriously requires at least two philosophical tasks. First, one must address the relevant notion of “trust” guiding the platitude. I offer a sketch of epistemic trust: arguing that epistemic trust involves several components: acceptance, communication, dependence, and confidence. The first duo concerns the epistemic element of epistemic trust and the second part delimit the fiducial aspect to epistemic trust. Second, one must also examine (...) what differentiates faith qua trust. I argue that we should not distinguish faith from trust merely by believing religious propositions but by the attitudes they express. In particular, the attitude of faith is more deeply entrenched and central to one’s noetic structure than trust simpliciter. The paper ends by arguing that the account proposed insofar as it accommodates and explains certain “faith desiderata”. We can thus give content to the “faith is a kind of trust” platitude with a model of trust on hand while showing how that model confirms and explains important features of faith. (shrink)

This paper is ambitious: it begins with mixing externalism in philosophy of mind with internalism in epistemology, and it ends with instructive insights from social and feminist thought. In the first stage, I argue that one can consistently combine two theses that appear, at first glance, incompatible: cognitive externalism—the thesis that one’s mental states/processing can extend past one’s biological boundaries—and mentalism in epistemology—i.e., that epistemic justification supervenes on one’s mental states. This yields the perhaps startling or strange view that the (...) loci of epistemic justification are both mental states and located externally to one’s skull and skin. This motivates the second stage: I aim to ease that strangeness by suggesting that most discussions of cognitive externalism and epistemology too often focus exclusively on extending epistemically reliable abilities, faculties, dispositions, etc. to artifacts in one’s environment. Instead, we should think of this combination as informed by feminist epistemologists’ insistence of our thinking’s irreducible and radical sociality. Epistemic communities shape and are shaped by our cognition—echoing the dynamic, interactive integration at the heart of cognitive externalism. Thus, just as I am part of an epistemic community, it is also a part of me. Thus, I think with others: not merely as an artifact but as constituent elements of my cognition itself; resulting in a robust socially extended internalism. (shrink)

More than ever, it is in vogue to argue that no norms either play a role in or directly follow from the theory of mental content. In this paper, I present an intuitive theory of intentionality (including a theory of mental content) on which norms are constitutive of the intentional properties of attitude and content in order to show that this trend is misguided. Although this theory of intentionality—the teleological theory of intentional representation—does involve a commitment to representational norms, these (...) norms are not problematic in the way critics have suggested they would be. In particular, these norms do not guide thinking by motivating intentional agents to (intentionally) accord with them; as a result, no obvious vicious regress threatens the theory. In the final section of this paper, I argue that accepting this teleological theory of intentionality need not commit one to thinking that intentionality is the product of natural selection. (shrink)

Recent approaches to the social epistemology of belief formation have appealed to an epidemiological model, on which the mechanisms explaining how we form beliefs from our society or community along the lines of infectious disease. More specifically, Alvin Goldman (2001) proposes an etiology of (social) belief along the lines of an epistemological epidemiology. On this “contagion model,” beliefs are construed as diseases that infect people via some socio-epistemic community. This paper reconsiders Goldman’s epidemiological approach in terms of epistemic trust. By (...) focusing on beliefs as diseases, Goldman misconstrues and underestimates the central role that epistemic trust plays in their formation (maintenance, revision, etc.). I suggest that we put trust, accordingly, as the center of an epidemiological model of social doxology—epistemic trust, rather than beliefs, is the disease with which one is infected. So, contra Goldman, beliefs themselves aren’t the disease—they are symptoms. Trust, on this approach, can be viewed as a pathology. This point connects Annette Baier’s (1994) work on moral trust—taking a cue from her “pathologies of trust.” The real pathology centered in social doxology is the epistemic trust manifested by those beliefs. Accordingly, I shall explore (and tentatively defend) an epidemiological model for such “pathological” epistemic trust inspired by Baier’s work on moral trust, one which can more adequately account for the infectious epistemic trust at work in social belief formation. (shrink)

Debate rages in virtue epistemology between virtue reliabilists and responsibilists. Here, I develop and argue for a new kind of responsibilism that is more conciliar to reliabilism. First, I argue that competence-based virtue reliabilism cannot adequately ground epistemic credit. Then, with this problem in hand, I show how Aristotle’s virtue theory is motivated by analogous worries. Yet, incorporating too many details of Aristotelian moral theory leads to problems, notably the problem of unmotivated belief. As a result, I suggest a re-turn (...) to Aristotle to develop a distinctively epistemological virtue theory that does not require any motive or affect for epistemic virtue. Nevertheless, my theory affirms that virtues are acquired, agent-expressive traits. The result is a conciliar responsibilism that leans closer to reliabilism. I end by arguing that my virtue responsibilism can solve worries facing both reliabilism and responsibilism. (shrink)

In this paper, I respond to an objection raised by Duncan Pritchard and Jesper Kallestrup against virtue epistemology. In particular, they argue that the virtue epistemologist must either deny that S knows that p only if S believes that p because of S’s virtuous operation or deny that intuitive cases of testimonial knowledge. Their dilemma has roots in the apparent ease by which we obtain testimonial knowledge and, thus, how the virtue epistemologist can explain such knowledge in a way that (...) both preserves testimonial knowledge and grounds it in one’s virtues. I argue that the virtue epistemologist has a way to accomplish both tasks if we take epistemic trust to be an intellectual virtue. I briefly discuss what such trust must look like and then apply it to the dilemma at hand: showing that a key intellectual virtue plausibly operates in cases of testimonial knowledge and/or belief. (shrink)

In this paper, I assess Duncan Pritchard’s defense of the “orthodox” view on epistemic normativity. On this view, termed “epistemic value T-monism” (EVTM), only true belief has final value. Pritchard discusses three influential objections to EVTM: the swamping problem, the goal of inquiry problem, and the trivial truths problem. I primarily focus on Pritchard’s defense of the trivial truths problem: truth cannot be the only final epistemic value because we value “trivial” truths less than “significant” truths. In response, Pritchard appeals (...) to epistemic virtue: the virtuous agent desires “substantial” truths, where “substantiality” is a matter of the non-luckiness of the true belief. Thus, what has substantial value, for Pritchard, is well-grounded true belief. Yet, I argue, this moves away from “orthodox” EVTM: this view fails to attribute final epistemic value to non-grounded, accidentally true belief. Aside from giving up EVTM altogether, I suggest this leads to either a revision or revolution. On the revision interpretation, EVTM was always imprecise: what orthodoxy always really cared about was epistemically grounded truth rather than truth simpliciter. On the revolutionary reading, what we really care about, contra orthodoxy, formation of belief in line with virtues rather than truth simpliciter. (shrink)

Ichikawa and Jarvis offer a new rationalist theory of mental content and defend a traditional epistemology of philosophy. They argue that philosophical inquiry is continuous with non-philosophical inquiry, and can be genuinely a priori, and that intuitions do not play an important role in mental content or the a priori.

Patrick Grim and Einar Duenger Bohn have recently argued that there can be no perfectly knowing Being. In particular, they urge that the object of omniscience is logically absurd (Grim) or requires an impossible maximal point of all knowledge (Bohn). I argue that, given a more classical notion of omniscience found in Aquinas and Augustine, we can shift the focus of perfect knowledge from what that being must know to the mode of that being’s understanding. Since Grim and Bohn focus (...) on the object rather than mode of God’s knowledge, this classical approach to omniscience undermines their objections. (shrink)

Alston argues that there is no such thing as a single concept of epistemic justification. Instead, there is an irreducible plurality of epistemically valuable features of beliefs: ‘epistemic desiderata.’ I argue that this approach is problematic for meta-epistemological reasons. How, for instance, do we characterize epistemic evaluation and do we do we go about it if there’s no theoretical unity to epistemology? Alston’s response is to ground all epistemic desiderata, thereby unifying epistemology, in truth and truth-conduciveness. I argue that this (...) move over-unifies epistemology, in effect, giving us a single criterion for epistemology on par with the epistemology-by-justification approach he rejects. Perhaps surprisingly, we find a similar theoretical worry in Aristotle’s argument about the science of metaphysics. Aristotle’s resolution in this problem by the ‘analogy of being’ provides a parallel framework to resolve the worries with Alston’s approach. In particular, I argue that we can focus epistemic evaluation on the person of epistemic virtue: this category will be focal, unifying the disparate desiderata, without reducing to one thing all epistemic values or relations that desiderate must bear to the central value. A virtue-centric account of epistemic normativity follows: one that can remain genuinely pluralistic and yet unified as well. (shrink)

In contradistinction to the many monographs and edited volumes devoted to historical, cultural, or theological treatments of demonology, this collection features newly written papers by philosophers and other scholars engaged specifically in philosophical argument, debate, and dialogue involving ideas and topics in demonology. The contributors to the volume approach the subject from the perspective of the broadest areas of Western philosophy, namely metaphysics, epistemology, logic, and moral philosophy. The collection also features a plurality of religious, cultural, and theological views on (...) the nature of demons from both Eastern and Western thought, in addition to views that may diverge from these traditional roots. _Philosophical Approaches to Demonology_ will be of interest to philosophers of religion, theologians, and scholars working in philosophical theology and demonology, as well as historians, cultural anthropologists, and sociologists interested more broadly in the concept of demons. (shrink)

By the middle of the eighteenth century the new science had challenged the intellectual primacy of common experience in favor of recondite, expert and even counter-intuitive knowledge increasingly mediated by specialized instruments. Meanwhile modern philosophy had also problematized the perceptions of common experience — in the case of David Hume this included our perception of causal relations in nature, a fundamental precondition of scientific endeavor.In this article I argue that, in responding to the ‘problem of induction’ as advanced by Hume, (...) Reid reformulated Aristotelian foundationalism in distinctly modern terms. An educator and mathematician self-consciously working within the framework of the new science, Reid articulated a philosophical foundation for natural knowledge anchored in the human constitution and in processes of adjudication in an emerging modern public sphere of enlightened discourse. Reid thereby transformed one of the bases of Aristotelian science — common experience — into a philosophically and socially justified notion of ‘common sense’. Reid's intellectual concerns had as much to do with the philosophy of science as they did with moral philosophy or epistemology proper, and were bound up with wider social and scientific changes taking place in the early modern period. (shrink)

In an age when it has become fashionable to dismiss the Enlightenment as a sinister movement based on instrumental rationality, Benjamin Redekop delves deeper to understand the movement on its own terms. In Enlightenment and Community he shows that the E.

This collection brings together new papers addressing the philosophical challenges that the concept of a Devil presents, bringing philosophical rigor to treatments of the Devil. Contributors approach the idea of the Devil from a variety of philosophical traditions, methodologies, and styles, providing a comprehensive philosophical overview that contemplates the existence, nature, and purpose of the Devil. While some papers take a classical approach to the Devil, drawing on biblical exegesis, other contributors approach the topic of the Devil from epistemological, metaphysical, (...) phenomenological, and ethical perspectives. This volume will be relevant to researchers and scholars interested in philosophical conceptions of the Devil and related areas, such as philosophers of religion, theologians, and scholars working in philosophical theology and demonology. (shrink)

O'Regan & Noë (O&N) present the most radical departure yet from traditional approaches to visual perception. However, internal representation cannot yet be abandoned. I will discuss: (1) recent evidence for very short-term pictorial representation of each fixation; (2) the possibility of abstract representation, largely unconsidered by the authors; and (3) that sensorimotor contingency theory requires internal visual retention and comparison.