Illusions that produce perceptual suppression despite constant retinal input are used to manipulate visual consciousness. Here we report on a powerful variant of existing techniques, Continuous Flash Suppression. Distinct images flashed successively around 10 Hz into one eye reliably suppress an image presented to the other eye. Compared to binocular rivalry, the duration of perceptual suppression increased more than 10-fold. Using this tool we show that the strength of the negative afterimage of an adaptor was reduced by half when (...) it was perceptually suppressed by input from the other eye. The more likely the adaptor was completely suppressed, the larger the reduction of the afterimage intensity. Paradoxically, trial-to-trial visibility of the adaptor did not correlate with the degree of suppression. Our results imply that formation of afterimages involves neuronal structures that access input from both eyes, but that do not correspond directly to the neuronal correlates of perceptual awareness. (shrink)

According to one theory, the brain is a sophisticated hypothesis tester: perception is Bayesian unconscious inference where the brain actively uses predictions to test, and then refine, models about what the causes of its sensory input might be. The brain’s task is simply continually to minimise prediction error. This theory, which is getting increasingly popular, holds great explanatory promise for a number of central areas of research at the intersection of philosophy and cognitive neuroscience. I show how the theory can (...) help us understand striking phenomena at three cognitive levels: vision, sensory integration, and belief. First, I illustrate central aspects of the theory by showing how it provides a nice explanation of why binocular rivalry occurs. Then I suggest how the theory may explain the role of the unified sense of self in rubber hand and full body illusions driven by visuotactile conflict. Finally, I show how it provides an approach to delusion formation that is consistent with one-deficit accounts of monothematic delusions. (shrink)

In order to identify the neural correlates of consciousness it is necessary to distinguish these from the neural correlates associated with unconscious information processing. We describe the various techniques, such as masking, which can be used to generate conditions in which the same stimulus is presented either just above or just below a threshold for visibility. Directed attention can also be used to manipulate the extent to which a stimulus gains access to awareness, as can various methods for creating bi‐stable (...) perception. A major problem for these studies is the possible confound of the need for participants to report their awareness and there is currently much interest in developing paradigms in which reporting awareness is not required. We also discuss studies exploring the neural correlates of imagination, illusions and hallucinations in which a perceptual experience occurs in the absence of a physical stimulus. Finally we consider techniques that go beyond correlation and attempt to identify the necessary and sufficient neural processes leading to conscious experience. (shrink)

In this chapter, data concerning the development of principal aspects of vision is reviewed. First, the development of colour vision and luminance perception is discussed. Relevant data accumulated so far indicates that perception of colour and luminance is present by 6-9 months of age. The presence of typical color illusions at this age suggests that the phenomenal character of color experience is comparable to that of adults well before the first birthday. Thus it seems plausible that color perception develops on (...) the grounds of genetically preprogrammed maturation, in which perceptual learning and plasticity play a limited role. This claim also seems to be supported by case studies of newly sighted patients. On the other hand, perceptual integration of edges and forms in the visual environment as well as the development of binocular vision, and the perception of ambiguous figures seem to depend crucially on early perceptual learning. Both developmental and clinical data indicate a more significant involvement of perceptual learning in such mid-level and higher level perceptual phenomena. (shrink)

Examines the philosophy, psychology, and neuroscience behind visual experience. Chapters on attention, illusions, aftereffects, binocular rivalry, hemispheric differences, attentional blink, agnosias and other disorders. Particular attention paid to consciouseness. The systematic review of key topics and the multitude of perspectives make this book an ideal primary or ancillary text for graduate courses in perception, vision, consciousness, or philosophy of mind.

This major study of Kant provides a detailed examination of the development and function of the doctrine of transcendental illusion in his theoretical philosophy. The author shows that a theory of 'illusion' plays a central role in Kant's arguments about metaphysical speculation and scientific theory. Indeed, she argues that we cannot understand Kant unless we take seriously his claim that the mind inevitably acts in accordance with ideas and principles that are 'illusory'. Taking this claim seriously, we can (...) make much better sense of Kant's arguments and reach a deeper understanding of the role he allots human reason in science. (shrink)

This is a preprint draft. Please cite published version (DOI: 10.1111/mila.12385). The aim of this paper is to provide a novel analysis of anorexia nervosa (AN) in the context of the sense of agency literature. I first show that two accounts of anorexia nervosa that we ought to take seriously— i.e., the first personal reports of those who have experienced it firsthand as well as the research that seeks to explain anorexic behavior from an empirical perspective— appear to be thoroughly (...) in tension with one another in their descriptions of anorexic actions. Rather than proceeding at this point by way of disregarding anorexic testimony as meaningless or insincere, I instead offer a positive account of the sense of agency in anorexia nervosa that renders these two depictions compatible. The resultant picture of anorexic behavior is one that accommodates current empirical findings while also providing valuable insight into how it is that anorexics can sincerely report feeling fully in control over their food restriction. (shrink)

In this paper I explore a brand of scepticism about perceptual experience that takes its start from recent work in psychology and philosophy of mind on change blindness and related phenomena. I argue that the new scepticism rests on a problematic phenomenology of perceptual experience. I then consider a strengthened version of the sceptical challenge that seems to be immune to this criticism. This strengthened sceptical challenge formulates what I call the problem of perceptual presence. I show how this problem (...) can be addressed by drawing on an enactive or sensorimotor approach to perceptual consciousness. Our experience of environmental detail consists in our access to that detail thanks to our possession of practical knowledge of the way in which what we do and sensory stimulation depend on each other. (shrink)

In 'Illusionism as a Theory of Consciousness', Frankish argues for illusionism: the thesis that phenomenal consciousness does not exist, but merely seems to exist. Illusionism, he says, 'replaces the hard problem with the illusion problem -- the problem of explaining how the illusion of phenomenality arises and why it is so powerful'. The illusion of phenomenality is indeed quite powerful. In fact, it is much more powerful than any other illusion, in the sense that we face (...) a very special and unique intuitive resistance when trying to accept that phenomenality is an illusion. This is bad news for illusionists, because this means that they cannot entirely model their explanation of the illusion of consciousness on the explanation of other illusions. Explaining this unique intuitive resistance to illusionism may therefore constitute the hardest aspect of the illusion problem. However, I think that this aspect of the problem is solvable. I will outline a possible solution, which is based on the hypothesis that our (illusory) introspective representations of phenomenal states characterize them as having unique epistemological properties and as playing a special epistemological role. (shrink)

Sir Peter Strawson’s ‘Freedom and Resentment’ was a landmark in the philosophical understanding of the free will problem. Building upon it, I attempt to defend a novel position, which purports to provide, in outline, the next step forward. The position presented is based on the descriptively central and normatively crucial role of illusion in the issue of free will. Illusion, I claim, is the vital but neglected key to the free will problem. The proposed position, which may be (...) called ‘Illusionism’, is shown to follow both from the strengths and from the weaknesses of Strawson’s position. (shrink)

The experience of conscious will is the feeling that we are doing things. This feeling occurs for many things we do, conveying to us again and again the sense that we consciously cause our actions. But the feeling may not be a true reading of what is happening in our minds, brains, and bodies as our actions are produced. The feeling of conscious will can be fooled. This happens in clinical disorders such as alien hand syndrome, dissociative identity disorder, and (...) schizophrenic auditory hallucinations. And in people without disorders, phenomena such as hypnosis, automatic writing, Ouija board spelling, water dowsing, facilitated communication, speaking in tongues, spirit possession, and trance channeling also illustrate anomalies of will – cases when actions occur without will or will occurs without action. This book brings these cases together with research evidence from laboratories in psychology to explore a theory of apparent mental causation. According to this theory, when a thought appears in consciousness just prior to an action, is consistent with the action, and appears exclusive of salient alternative causes of the action, we experience conscious will and ascribe authorship to ourselves for the action. Experiences of conscious will thus arise from processes whereby the mind interprets itself – not from processes whereby mind creates action. Conscious will, in this view, is an indication that we think we have caused an action, not a revelation of the causal sequence by which the action was produced. Key Words: apparent mental causation; automatism; conscious will; determinism; free will; perceived control. (shrink)

In this paper we introduce a paradigm of experiment which, we believe, is of interest both in psychology and philosophy. There the subject wears an HMD (head-mount display), and a camera is set up at the upper corner of the room, in which the subject is. As a result, the subject observes his own body through the HMD. We will mainly focus on the philosophical relevance of this experiment, especially to the thesis of so-called 'immunity to error through misidentification relative (...) to the first-person pronoun'. We will argue that one experiment conducted in this setting, which we call the bodily illusion experiment, provides a counterexample to that thesis. (shrink)

The experience of conscious will is the feeling that we are doing things. This feeling occurs for many things we do, conveying to us again and again the sense that we consciously cause our actions. But the feeling may not be a true reading of what is happening in our minds, brains, and bodies as our actions are produced. The feeling of conscious will can be fooled. This happens in clinical disorders such as alien hand syndrome, dissociative identity disorder, and (...) schizophrenic auditory hallucinations. And in people without disorders, phenomena such as hypnosis, automatic writing, Ouija board spelling, water dowsing, facilitated communication, speaking in tongues, spirit possession, and trance channeling also illustrate anomalies of will not from processes whereby mind creates action. Conscious will, in this view, is an indication that we think we have caused an action, not a revelation of the causal sequence by which the action was produced. (shrink)

This book suggests that to know how Wittgenstein’s post-Tractarian philosophy could have developed from the work of Kant is to know how they relate to each other. The development from the latter to the former is invoked heuristically as a means of interpretation, rather than a historical process or direct influence of Kant on Wittgenstein. Ritter provides a detailed treatment of transcendentalism, idealism, and the concept of illusion in Kant’s and Wittgenstein’s criticism of metaphysics. Notably, it is through the (...) conceptions of transcendentalism and idealism that Wittgenstein’s philosophy can be viewed as a transformation of Kantianism. This transformation involves a deflationary conception of transcendental idealism along with the abandonment of both the idea that there can be a priori 'conditions of possibility' logically detachable from what they condition, and the appeal to an original ‘constitution’ of experience. -/- The closeness of Kant and post-Tractarian Wittgenstein does not exist between their arguments or the views they upheld, but rather in their affiliation against forms of transcendental realism and empirical idealism. Ritter skilfully challenges several dominant views on the relationship of Kant and Wittgenstein, especially concerning the cogency of Wittgenstein-inspired criticism focusing on the role of language in the first Critique, and Kant's alleged commitment to a representationalist conception of empirical intuition. (shrink)

This book explores the philosophical and scientific arguments for free will skepticism and their implications. Skepticism about free will and moral responsibility has been on the rise in recent years. In fact, a significant number of philosophers, psychologists, and neuroscientists now either doubt or outright deny the existence of free will and/or moral responsibility—and the list of prominent skeptics appears to grow by the day. Given the profound importance that the concepts of free will and moral responsibility play in our (...) lives—in understanding ourselves, society, and the law—it is important that we explore what is behind this new wave of skepticism. It is also important that we explore the potential consequences of skepticism for ourselves and society. This edited collection of new essays brings together an internationally recognized line-up of contributors, most of whom hold skeptical positions of some sort, to display and explore the leading arguments for free will skepticism and to debate their implications. It includes original contributions by Derk Pereboom, Galen Strawson, Ted Honderich, Bruce Waller, Neil Levy, Saul Smilansky, Thomas Nadelhoffer and Daniela Goya Tocchetto, Benjamin Vilhauer, Susan Blackmore, Manuel Vargas, Shaun Nichols, John-Dylan Haynes and Michael Pauen, Thomas Clark, Mark Hallett, Susan Pockett, and Maureen Sie. (shrink)

Cognitive Penetration holds that cognitive states and processes, specifically propositional attitudes (e.g., beliefs), sometimes directly impact features of perceptual experiences (e.g., the coloring of an object). In contrast, more traditional views hold that propositional attitudes do not directly impact perceptual experiences, but rather are only involved in interpreting or judging these experiences. Understandably, Cognitive Penetration is controversial and has been criticized on both theoretical and empirical grounds. I focus on defending it from the latter kind of objection and in doing (...) so, highlight important features of Cognitive Penetration mechanisms and effects. I first sketch promising criteria for Cognitive Penetration and then address widespread Replication and Demonstration worries about purported instances of it. Next, I present one of the most compelling Cognitive Penetration studies and address specific objections against it and others. I demonstrate that each of these objections misunderstands important features of either Cognitive Penetration mechanisms or the specific studies to which they are applied. Ultimately, I conclude that multiple key studies are not undermined by these objections and con- tinue to provide support for Cognitive Penetration. Correcting these misunderstandings bolsters empirical support for Cognitive Penetration and contributes to a better understand- ing of the mechanisms involved in perceptual processing. (shrink)

This is a profound and concise essay on the basic structure of contemporary politics, written throughout in a voice that is sceptical, engaged, and clear.

The Appendix to the Transcendental Dialectic of Kant's first Critique is notorious for two reasons. First, it appears to contradict itself in saying that the idea of the systematic unity of nature is and is not transcendental. Second, in the passages in which Kant appears to espouse the former alternative, he appears to be making a significant amendment to his account of the conditions of the possibility of experience in the Transcendental Analytic. I propose a solution to both of these (...) difficulties. With regard to the first, I argue that Kant does not contradict himself. With regard to the second, I argue that Kant is not making any change to his view of the conditions of the possibility of experience espoused in the Transcendental Analytic. The underlying cause of these apparent problems is also their solution: the transcendental illusion that nature is necessarily systematic. (shrink)

In this paper we examine the weaknesses of development strategies which have been applied in Puerto Rico. The process of industrialization by invitation, referred to as Operation Bootstrap, was instituted by the United States of America by the end of the 1940s. This involved tax incentives and subsidies for companies and was dependent on industrial peace and low wages in labor-intensive, low-wage industries, especially those of textile and clothing. Naturally, women's labor was encouraged as a result of the lower cost, (...) as well as assumed dexterity, of the female in such areas. While these new activity areas for women also allowed other benefits in the form of legislation and increased social services, the inherent problems of rapid, labor-intensive industrialization also led to displacement and increased underemployment and impoverization of female headed families from the 1960s onwards. The paper explores some of the changes in gender relations which resulted from these policies and looks at the challenges which the feminist movement in Puerto Rico has made, particularly with regard to state processes to bring about beneficial changes in the economic, legal, political and social status of women in Puerto Rico. (shrink)

나는 이 글에서 니체의 『비극의 탄생』을 더 잘 이해하기 위한 교통 신호기를 하나 제안하려 한다. 내가 “니체의 네 환상 단계”라 이름 붙이는 신호기다. “니체의 네 환상 단계”는 그가 말한 “세 환상 단계”와 그가 “말하지 않겠다”고 하면서도 말한 “더 저속하고 강력한 환상”을 합친 것이다. 나는 “니체의 네 환상 단계”라는 프레임으로 다음과 같이 논증할 것이다. 첫째, 『비극의 탄생』에서 니체가 아주 싫어한 환상은 “더 저속하고 강력한 환상”, 싫어한 환상은 “소크라테스 환상”, 좋아한 환상은 “호메로스 환상”, 아주 좋아한 환상은 “디오니소스 환상”이다. 둘째, 우리가 아폴론 환상을 (...) 소크라테스 환상과 호메로스 환상으로 나누어 보아야 망상인 소크라테스 환상의 잠재력, 곧 비극의 재탄생을 낳을 수 있는 힘이 더 잘 보인다. 셋째, 니체가 “더 저속하고 강력한 환상”에 적대적인 이유는 두 가지, 즉 이 환상이 가족 제도와 법규를 무너뜨리는 지나친 성 방종의 성격을 지닌다는 점과 디오니소스 열광자가 자기 모습을 신의 모습으로 보는 특성을 지니지 못한다는 점이다. (shrink)

Este ensayo aborda el tratamiento que Hobbes da a la complejidad de la causalidad en conjunción con su análisis materialista del modo en que el miedo orienta al sujeto en el tiempo con el fin de defender que para Hobbes el miedo es tanto una respuesta como una negación de la imposibilidad de la auto-soberanía. El ensayo argumenta que los movimientos de la memoria y la anticipación que Hobbes describe como centrales en la pasión del miedo transforman el campo causal (...) del sujeto de tal manera que le da un sentido de posible dominio tanto sobre sí como sobre el mundo que la rodea. Al sugerir que el miedo fomenta la ilusión de autonomía en la agencia de los individuos, Hobbes señala la posibilidad de que el inmenso y temible poder atribuido al soberano no sea simplemente una respuesta a la necesidad de sofocar el desenfreno y el desorden, sino también una condición para el sentido de cada individuo de su propia soberanía. (shrink)

No Child Left Behind and the Illusion of Reform highlights the scholarship of eight doctoral students in curriculum and their professor, who took on the legal, political, philosophical, social, cultural, economic, and curricular assumptions of the No Child Left Behind Act . This book, the manifestation of their work, is a critical examination of the impact of the NCLB on the lives of children, families, and teachers.

나는 이 글에서 니체의 『비극의 탄생』을 더 잘 이해하기 위한 교통 신호기를 하나 제안하려 한다. 내가 “니체의 네 환상 단계”라 이름 붙이는 신호기다. “니체의 네 환상 단계”는 그가 말한 “세 환상 단계”와 그가 “말하지 않겠다”고 하면서도 말한 “더 저속하고 강력한 환상”을 합친 것이다. 나는 “니체의 네 환상 단계”라는 프레임으로 다음과 같이 논증할 것이다. 첫째, 『비극의 탄생』에서 니체가 아주 싫어한 환상은 “더 저속하고 강력한 환상”, 싫어한 환상은 “소크라테스 환상”, 좋아한 환상은 “호메로스 환상”, 아주 좋아한 환상은 “디오니소스 환상”이다. 둘째, 우리가 아폴론 환상을 (...) 소크라테스 환상과 호메로스 환상으로 나누어 보아야 망상인 소크라테스 환상의 잠재력, 곧 비극의 재탄생을 낳을 수 있는 힘이 더 잘 보인다. 셋째, 니체가 “더 저속하고 강력한 환상”에 적대적인 이유는 두 가지, 즉 이 환상이 가족 제도와 법규를 무너뜨리는 지나친 성 방종의 성격을 지닌다는 점과 디오니소스 열광자가 자기 모습을 신의 모습으로 보는 특성을 지니지 못한다는 점이다. (shrink)

First published in 1962, this is a book about Marx and Freud - the two intellectual giants of the 20th century.

Karsten Struhl has offered an intriguing account of what kind of illusion the self is. His account is based on Buddhist philosophy, neuropsychology, and neuroscience. This critical notice examines his arguments, and aims to question whether or not the self is the kind of illusion Struhl argues it to be.

What ecological advantages do animals gain by being able to detect, extract and exploit wavelength information? What are the advantages of representing that information as hue qualities? The benefits of adding chromatic to achromatic vision, marginal in object detection, become apparent in object recognition and receiving biological signals. It is argued that this improved performance is a direct consequence of the fact that many animals' visual systems reduce wavelength information to combinations of four basic hues. This engenders a simple categorical (...) scheme that permits a rich amount of sensory information to be rapidly and efficiently employed by cognitive machinery of limited capacity. (shrink)