Max Velmans

Lehar provides useful insights into spatially extended phenomenology that may have major consequences for neuroscience. However, Lehar's biological naturalism leads to counterintuitive conclusions, and he does not give an accurate account of preceding and competing work. This commentary compares Lehar's analysis with that of Velmans, which addresses similar issues but draws opposite conclusions. Lehar argues that the phenomenal world is in the brain and concludes that the physical skull is beyond the phenomenal world. Velmans argues that the brain is in the phenomenal world and concludes that the physical skull is where it seems to be.

Viewed from a first-person perspective consciousness appears to be necessary for complex, novel human activity - but viewed from a third-person perspective consciousness appears to play no role in the activity of brains, producing a "causal paradox". To resolve this paradox one needs to distinguish consciousness of processing from consciousness accompanying processing or causing processing. Accounts of consciousness/brain causal interactions switch between first- and third-person perspectives. However, epistemically, the differences between first- and third-person access are fundamental. First- and third-person accounts are complementary and mutually irreducible.

The study of preconscious versus conscious processing has an extensive history in cognitive psychology, dating back to the writings of William James. Much of the experimental work on this issue has focused on perception, conceived of as input analysis, and on the relation of consciousness to attentional processing. The present paper examines when input analysis becomes conscious from the perspectives of cognitive modelling, methodology, and a more detailed understanding of what is meant by "conscious processing." Current evidence suggests that perception becomes conscious at a late-arising stage of focal-attentive processing concerned with information integration and dissemination. Reliable criteria for determining when perception becomes conscious combine the evidence of "first-person," phenomenological reports with "third-person" functional dissociations between preconscious and conscious processing. There are three, distinct senses in which a process may be said to be "conscious." It might be "conscious" (a) in the sense that one is conscious of the process, (b) in the sense that the operation of the process is accompanied by consciousness (of its results) and (c) in the sense that consciousness enters into or causally influences the process. Consciousness of familiar stimuli, rather than entering into input analysis, appears to follow it, in human information processing. Processes closely associated with the appearance of consciousness such as information integration and dissemination appear to operate unconsciously. Consequently, perception appears to be "conscious" only in sense (b)

The mysteries of consciousness have gripped the human imagination for over 2,500 years. At the dawn of the new millennium, Understanding Consciousness provides new solutions to some of the deepest puzzles surrounding its nature and function. Drawing on recent scientific discoveries, Max Velmans challenges conventional reductionist thought, providing an understanding of how consciousness relates to the brain and physical world that is neither dualist, nor reductionist. Understanding Consciousness will be of great interest to psychologists, philosophers, neuroscientists and other professionals concerned with mind/body relationships, and all who care deeply about this subject.

This paper is a commentary on Rupert Sheldrake’s analysis of theories of perception (in JCS, 2005, 2006). As Sheldrake points out in his fascinating review of ancient and modern thinking on this subject, theories of vision have ranged from “extramissive” theories that posit some active influence emanating from the eyes that both illuminates and influences the external world, “intramissive” theories that stress the influence of the external world on the (passive) brain, and theories in which intramissive and extramissive influences combine. As Sheldrake notes, up to the 12th Century, extramissive theories were dominant, but with an increasing understanding of the way light reflected from an object is focused on the retina by the lens of the eye, intramissive theories have become dominant. Drawing on his research on staring experiments, Sheldrake defends an extramissive theory. In this commentary I argue for a model of perception that combines intramissive and extramissive influences, which accepts all third-person evidence for intramissive causal antecedents to visual perception while at the same time accepting the phenomenal evidence for the apparent external nature of the perceived world—an extramissive psychological effect that I refer to as “perceptual projection”. I also suggest some additions to the model that might begin to make sense of apparently extramissive causes of the type needed to explain staring experiments. Ultimately, I suggest, we may need to accept that we are in our minds, but might be partly out of our brains!

This paper provides an initial, multidimensional map of the complex relationships among consciousness, mind, brain, and the external world in a way that both follows the contours of everyday experience and the findings of science. It then demonstrates how this reflexive monist map can be used to evaluate the utility and resolve some of the oppositions of the many other 'isms' that currently populate consciousness studies. While no conventional, one-dimensional 'ism' such as physicalism can do justice to this web of relationships, physicalism, functionalism, dualism, neutral monism, and dual-aspect monism can all be seen to provide useful ways of understanding different aspects of the relationships among consciousness, mind, brain, and the external world when these are viewed in either a first- or a third-person way from within this web of relationships by sentient creatures such as ourselves. For example, physicalism and functionalism provide a useful understanding of consciousness, mind, brain, and the external world when viewed from a third-person perspective, while neutral monism provides a useful way of understanding first- versus third-person views of external phenomena. On the other hand, dual-aspect monism provides a useful way of understanding first- versus third-person views of mind, including eastern versus western views of mind. Dual-aspect monism also provides a useful understanding of the 'unconscious ground of being' that gives rise to, supports, and embeds all these observable phenomena. For an integrated understanding one needs to understand how these phenomena and relationships combine into an integrated whole.

This commentary elaborates on Gray's conclusion that his neurophysiological model of consciousness might explain how consciousness arises from the brain, but does not address how consciousness evolved, affects behaviour or confers survival value. The commentary argues that such limitations apply to all neurophysiological or other third-person perspective models. To approach such questions the first-person nature of consciousness needs to be taken seriously in combination with third-person models of the brain.

This is an open-peer commentary on Newell, B.R. & Shanks, D.R. (2014) Unconscious influences on decision making, BBS, 37:1, pp. 1-61. Newell and Shanks’ critical review considers only a very limited sense in which mental processes can be thought of as either conscious or unconscious and consequently gives a misleading analysis of the role of consciousness in human information processing. This commentary provides an expanded analysis of conscious processing that also reveals the various ways in which mental processes are unconscious. This undermines Newell & Shanks' contention that, “evidence for the existence of robust unconscious influences on decision making and related behaviors is weak, and many of the key research findings either demonstrate directly that behavior is under conscious control or can be plausibly explained without recourse to unconscious influences”(p 19). On the contrary, evidence for the influence of unconscious mental processes on human behaviour is ubiquitous.

This is an open peer commentary on O’Brien & Opie (1999) “A connectionist theory of phenomenal experience”, published as a target article in the Behavioral and Brain Sciences. O’Brien & Opie defend a “vehicle” rather than a “process” theory of consciousness largely on the grounds that only conscious information is “explicit”. I argue that preconscious and unconscious representations can be functionally explicit (semantically well-formed and causally active). I also suggest that their analysis of how neural activation space mirrors the information structure of phenomenal experience fits more naturally into a dual-aspect theory of information than into their reductive physicalism.

This Introduction to a Journal of Consciousness Studies Special Issue on Monist Alternatives to Physicalism summarises some of the basic problems of Physicalism and common fallacies in arguments for its defence that are found in the philosophical and scientific literature. It then introduces six monist alternatives: 1) a form of emergent panpsychism developed by William Seager; 2) a novel introduction to the process philosophy of A.N. Whitehead by Anderson Weekes; 3) a review of current developments in Russellian Monism by Torin Alter and Yujin Nagasawa; 4) an analysis of dual-aspect monism and its relation to quantum mechanics originally proposed developed by Pauli and Jung and given a modern interpretation by Harald Atmanspacher; 5) a form of processing monism that might help to resolve ontological differences in Indian philosophy and psychology between dualist Samkya Yoga and nondualist Advaita Vedanta by K. Ramakrisna Rao; and 6) an account of Reflexive Monism, which, viewed as a global system, can incorporate many of the seemingly opposed “isms” that currently populate Consciousness Studies by Max Velmans. Whatever the fundamental nature of Nature might be, it must have the power to give rise to its observable manifestations. Consequently, all the papers in this issue are concerned to give a “natural” account of the relationships among consciousness, mind, and the material world that is entirely consistent with the findings of science, and they all accept that for a unified understanding, mind, consciousness and the material world must have a common base. The aim of the Special Issue is to contribute to a deeper understanding of that base, and to stimulate novel thinking about its nature.

Physicalists commonly argue that conscious experiences are nothing more than states of the brain, and that conscious qualia are observer-independent, physical properties of the external world. Although this assumes the ‘mantle of science,’ it routinely ignores the findings of science, for example in sensory physiology, perception, psychophysics, neuropsychology and comparative psychology. Consequently, although physicalism aims to ‘naturalise’ consciousness, it gives an unnatural account of it. It is possible, however, to develop a natural, nonreductive, reflexive model of how consciousness relates to the brain and the physical world. This paper introduces such a model and how it construes the nature of conscious experience. Within this model the physical world as perceived (the phenomenal world) is viewed as part of conscious experience not apart from it. While in everyday life we treat this phenomenal world as if it is the “physical world”, it is really just one biologically useful representation of what the world is like that may differ in many respects from the world described by physics. How the world as perceived relates to the world as described by physics can be investigated by normal science (e.g. through the study of sensory physiology, psychophysics and so on). This model of consciousness appears to be consistent with both third-person evidence of how the brain works and with first-person evidence of what it is like to have a given experience. It also views consciousness as an integral part and natural expression of the world—in a manner true to the spirit (if not to the detail) of Whitehead’s philosophy.

In the visual system, the represented features of individual objects (shape, colour, movement, and so on) are distributed both in space and time within the brain. Representations of inner and outer event sequences arrive through different sense organs at different times, and are likewise distributed. Objects are nevertheless perceived as integrated wholes - and event sequences are experienced to form a coherent "consciousness stream." In their thoughtful article, Dennett & Kinsbourne ask how this is achieved.

The study of consciousness in modern science is hampered by deeply ingrained, dualist presuppositions about the nature of consciousness. In particular, conscious experiences are thought to be private and subjective, contrasting with physical phenomena which are public and objective. In the present article, I argue that all observed phenomena are, in a sense, private to a given observer, although there are some events to which there is public access. Phenomena can be objective in the sense of intersubjective, investigators can be objective in the sense of truthful or dispassionate, and procedures can be objective in being well-specified, but observed phenomena cannot be objective in the sense of being observer-free. Phenomena are only repeatable in the sense that they are judged by a community of observers to be tokens of the same type. Stripped of its dualist trappings the empirical method becomes if you carry out these procedures you will observe or experience these results -- which applies as much to a science of consciousness as it does to physics.

(added for 2013 upload): This chapter compares classical dualist and reductionist views of phenomenal consciousness with an alternative, reflexive way of viewing the relations amongst consciousness, brain and the external physical world. It argues that dualism splits the universe in two fundamental ways: in viewing phenomenal consciousness as having neither location nor extension it splits consciousness from the material world, and subject from object. Materialist reductionism views consciousness as a brain state or function (located and extended in the brain) which eliminates the consciousness/material world split, but retains the split of subject from object. The chapter argues that neither dualism nor reductionism accurately describes the phenomenal world; consequently they each provide a misleading understanding of phenomenal consciousness. Reflexive monism follows the contours of everyday experience, thereby allowing a more unified understanding of how phenomenal consciousness relates to the brain and external physical world that is consistent both with the findings of science and with common sense. The chapter goes on to consider how phenomenal objects relate to real objects, perceptual projection, how phenomenal space relates to physical space, whether the brain is in the world or the world in the brain, and why this matters for science.

This review summarises why it is difficult for Darwinian evolutionary theory to explain the existence and function of consciousness. It then evaluates whether Humphrey's book Soul Dust overcomes these problems. According to Humphrey, consciousness is an illusion constructed by the brain to enhance reproductive fitness by motivating creatures that have it to stay alive. Although the review entirely accepts that consciousness gives a first-person meaning to existence, it concludes that Humphrey does not give a convincing account of how this can arise from random variations in the genome. Nor does he demonstrate how first-person experiences might enter into or be reducable to third-person functioning. The review concludes that Humphrey's case is unconvincing, and goes on to suggest that an entirely different, non-reductive approach may be required to understand consciousness.

Nature Network Groups hosted an invited workshop on 'Theories of Consciousness' during the second semester of 2009. There were presentations by each of 15 authors active in the field, followed by debate with other presenters and invitees. A week was allocated to each of the theories proposed; general discussion threads were also opened from time to time, as seemed appropriate. We offer here an account of the principal outcomes. It can be regarded as a contemporary, 'state of the art' snapshot of thinking in this field.

How can one investigate phenomenal consciousness? As in other areas of science, the investigation of consciousness aims for a more precise knowledge of its phenomena, and the discovery of general truths about their nature. This requires the development of appropriate first-person, second-person, and third-person methods. This book introduces some of the creative ways in which these methods can be applied to different purposes, e.g. to understand the relation of consciousness to brain, to examining or changing consciousness as such, and to the way consciousness is influenced by social, clinical and therapeutic contexts. To clarify the strengths and weaknesses of different methods and to demonstrate the interplay of methodology and epistemology, the book also suggests a number of "maps" of the consciousness studies terrain that places different approaches to the study of consciousness into a broader, interdisciplinary context.

(for online upload) The readings in Investigating Phenomenal Consciousness (2000) were developed from an International Symposium on Methodologies for the Study of Consciousness: A new Synthesis,” that I organised in April, 1996, funded and hosted by the Fetzer Institute, Wisconsin, USA, with the aim of fostering the development of first-person methods that could be used in conjunction with already well-developed third-person methods for investigating phenomenal consciousness. In this Introduction, we briefly survey the state of the art at that time, the reasons for a resurgence of interest in consciousness, the available methodologies, the reasons for increasing dissatisfaction with the adequacy of reductive third-person methods, various difficulties facing the development of rigorous first-person methods, and various creative approaches to solving these difficulties. Suggestions are also made about how to heal the fragmentation in consciousness studies, by placing different approaches to the study of consciousness into a broader context, establishing their domain of applicability and providing some bases for synthesis.

This overview of Consciousness Studies examines the conditions that one has to satisfy to establish a scientific investigation of phenomenal consciousness. Written from the perspective experimental psychology, it follows a two-pronged approach in which traditional third-person methods for investigating the brain and physical world are complementary to first-person methods for investigating subjective experience allowing the possibility of finding “bridging laws” that relate such first- and third-person data to each other. Mindful of the relative sophistication of third-person methods the chapter focuses on the problems of developing similarly sophisticated first-person methods. The problems are of three kinds: (1) Epistemological problems: How can one obtain public, objective knowledge about private, subjective experiences? (2) Methodological problems: Given that one cannot attach measuring instruments directly up to experiences, what psychological “instruments” and procedures are appropriate to their study? (3) The relation of the observer to the observed: The more closely coupled an observer is with an observed, the greater the potential influence of the act of observation on the nature of the observed (“observer effects”). Given this, how can one develop introspective and phenomenological methods where the observer is the observed? The chapter argues that the epistemological problems are more apparent than real, although this requires one to construe what is private versus public, and what is subjective or intersubjective versus what is objective in a slightly different way—with some enabling consequences for a science of consciousness. Methodological problems are real, but not fundamentally different to the problems traditionally faced in experimental psychological investigations of mental phenomena. The close-coupling of observer with the observed in first-person investigations can also be a problem, producing “observer effects” that are more acute than in most third-person investigations. The chapter suggests that one can either try to minimise such effects or to harness them, depending on the purpose of the investigation.

This is the second of four online Companions to Velmans, M. (ed.) (2018) Consciousness (Critical Concepts in Psychology), a 4-volume collection of Major Works on Consciousness commissioned by Routledge, London. The Companion to Volume 2 Part 1 focuses on the detailed relationship of phenomenal consciousness to mental processing described either functionally (as human information processing) or in terms of neural activity, in the ways typically explored by cognitive psychology and cognitive neuroscience. Beginning with reviews of functional differences between unconscious, preconscious and conscious processing and the different senses in which mental processing can be said to be “conscious”, the readings turn to seminal work on blindsight and related phenomena, experimental evidence of perception without awareness, ways to combine “subjective” and “objective” measures of awareness, evidence for distinct neural pathways governing visual awareness and visual control of motor acts, and the complex ways in which consciousness of action relates to both voluntary and involuntary acts. The readings then focus on the intimate links between attention and consciousness, starting with the writings of William James and surveying the extensive work on this subject over the last 60 years that explores the relationships between and attended and non-attended processing, preconscious and conscious processing, and attention, primary (working, short-term) memory and consciousness. The readings go on to survey the evidence that attention contributes to the “neural binding” required for an integrated conscious experience and evidence that attention (in humans) is dissociable from consciousness, necessary for consciousness, but not sufficient for consciousness. The readings then turn to research on “inattentional blindness”, and conclude with a review of Baars’ global workspace theory, which integrates many theories and findings in this area into a coherent, global model. The Companion then summarises seminal readings on learning, memory and consciousness; the extensive research on mental imagery, long thought to epitomize private, subjective conscious experience—and consequently ruled out of science by reductive, materialist philosophies of mind; the complex relations of consciousness to sleep and dreaming; the development of consciousness in human infants; and the debates surrounding, and extensive evidence for consciousness in non-human animals, with attendant consequences for their humane treatment. As with the other Companions to these Volumes there are many links to background resources (marked in pink) and to the selected readings themselves (marked in blue).

Of all the problems facing science none are more challenging yet fascinating than those posed by consciousness. In The Science of Consciousness leading researchers examine how consciousness is being investigated in the key areas of cognitive psychology, neuropsychology and clinical psychology. Within cognitive psychology, special focus is given to the function of consciousness, and to the relation of conscious processing to nonconscious processing in perception, learning, memory and information dissemination. Neuropsychology includes examination of the neural conditions for consciousness and the effects of brain damage. Finally, mind/body interactions in clinical and experimental settings are considered, including the somatic effects of imagery, biofeedback and placebo effects. Every chapter is written by an expert in the field. They each provide a clear overview of existing research along with an exciting new synthesis of consciousness studies. The The Science of Consciousness will be invaluable for students, researchers and clinicians interested in the developments and directions of this rapidly growing field

In daily life we take it for granted that our minds have conscious control of our actions, at least for most of the time. But many scientists and philosophers deny that this is really the case, because there is no generally accepted theory of how the mind interacts with the body. Max Velmans presents a non-reductive solution to the problem, in which ‘conscious mental control’ includes ‘voluntary’ operations of the preconscious mind. On this account, biological determinism is compatible with experienced free will. Velmans’ theory is put to the test by nine critics: Ron Chrisley, Todd Feinberg, Jeffrey Gray, John Kihlstrom, Sam Rakover, Ramakrishna Rao, Aaron Sloman, Steve Torrance andRobert Van Gulick, followed by Velmans' reply.

This paper summarised the main arguments presented in "Consciousness, brain and the physical world" Philosophical Psychology (1990) to introduce a symposium on that paper. This was the first symposium on Velmans' Reflexive Model of Perception (the departure point for Reflexive Monism). This summary of the 1990 paper was followed by three critiques (by Robert Rentoul, Norman Wetherick, and Grant Gillett) followed by two replies. At the time of this upload (25 years later) many of the points in the 1991 paper have become common currency, however some of the confusions about the implications of the reflexive model persist, so the discussion continues to have contemporary relevance. See academia.edu link for the entire symposium.

Abstract. This introductory chapter was written in 1996, for a new book of review articles on the emerging science of consciousness, specifically aimed at undergraduate and postgraduate students by experts in the relevant fields. Following on a brief history, the chapter moves on to definitions of consciousness and background philosophical issues, and then introduces a unified, non-reductionist scientific approach. It then summarises major issues for studies of consciousness in cognitive psychology, including studies of attention, memory, the extent of preconscious analysis and the relation of consciousness more generally to human information processing. It then turns to the neuropsychology of consciousness, starting with some apparent neural requirements for the transition from preconscious to conscious states, various clinical dissociations of consciousness, conditions for integration (or binding) and, finally, clinical applications, including different forms of mind/body interaction and evidence for the causal efficacy of mental states. The chapter concludes that while some of the ancient problems of consciousness remain unsolved, its study has become the subject of a rapidly developing science.

This is the fourth of four online Companions to Velmans, M. (ed.) (2018) Consciousness (Critical Concepts in Psychology), a 4-volume collection of Major Works on Consciousness commissioned by Routledge, London. The Companion (and Volume) begins with a review of mental influences on states of the body and brain (psychogenesis), which are often thought of as theoretically problematic for conventional materialist theories of mind. The evidence is nevertheless extensive, for example in psychosomatic illnesses and studies of the physiological consequences of meditation, imagery, biofeedback and hypnosis. Such effects are also central to developments in psychoneuroimmunology and studies of placebos, dealing not only with how to control for such effects in clinical trials, but with how such effects operate, and how to harness them for the benefit of patients. The Companion then surveys altered states of consciousness, including the conditions for their emergence, their adaptive as well as maladaptive potential, and the influences of culture on how these are understood. The analysis deepens with reviews of the major ways in which consciousness can be usefully transformed, starting with the burgeoning literature on the nature and effects of meditation practices, including their effects on neural dynamics and the varied ways in which they have, in recent years, been incorporated into a range of psychological therapies, focusing particularly on mindfulness and its potential consequences for psychological health. The survey then turns to mystical experiences, which, of all the positive altered states of consciousness, are perhaps the most extraordinary and transformative. Reported over millennia and recognized by William James to combine ineffability with a noetic quality, their generation, effects and interpretation have, once more, become the subject of research. In this connection, we also review the resurgent interest in the use of drugs in the transformation of consciousness focusing particularly on recent research on the clinical and neurophysiological effects of major psychedelics such as psilocybin and LSD. It will be apparent that the four Volumes of this Collection cover a vast range of phenomena that cannot comfortably be accommodated into a materialist, reductionist worldview, and so this Companion (and the entire collection) concludes with a diverse sample of non-reductive, integrative theories that offer unifying ways of understanding consciousness, drawing on information theory, neuropsychology, psychodynamics, physics, psychology, parapsychology, and philosophy. As with the other Companions to these Volumes there are many links to background resources (marked in pink) and to the selected readings themselves (marked in blue).

This is the first of four online Companions to Velmans, M. (ed.) (2018) Consciousness (Critical Concepts in Psychology), a 4-volume collection of Major Works on Consciousness commissioned by Routledge, London. Each of the Companions presents a pre-publication version of the introduction to one of the Volumes and, for Volume 1, it also sets the stage for the entire, printed collection. As the collection forms part of a Critical Concepts in Psychology series, this selection of major works focuses mainly on works that have a direct psychological relevance. From the mid 19th Century onwards, psychology began to separate itself from philosophy, and the development of psychological thought about consciousness links intimately to the development of psychology itself. In order to trace this development, the four volumes of this collection follow a rough, historical sequence. Volume 1 deals with The Origins of Psychology and the Study of Consciousness. Volumes 2 and 3 deal with contemporary Cognitive and Neuropsychological Approaches to the Study of Consciousness. And Volume 4 focuses mainly on New Directions: Psychogenesis, Transformations of Consciousness and Non-reductive, Integrative Theories, which deal with issues likely to expand current, mainstream thought in potentially novel, and, sometimes, challenging directions. The printed, 4-Volume collection presents 89 major readings (or salient extracts from major readings) drawn from the entire field of Consciousness Studies, along with these introductions and an extensive index. It also introduces 5 additional readings that were selected for inclusion, but could not be reprinted for the reason that reprint permissions were prohibitively expensive. Although these online Companions cannot substitute for the 2000 page hard copy, they do provide a wealth of additional resources in the form of online links to supplementary readings (marked in pink) and to the readings themselves (marked in blue). In many cases the online sources are freely available or available through institutional subscriptions. Links are also provided for some of the readings that require access to complex colour plates, thereby making the four Companions complementary to the collection itself. This Companion to Volume 1 focuses on the selection criteria for the collection, the problems presented by consciousness and how to organize these into groups, the ancient history of thought about consciousness, mind and soul, the emergence of psychology as the empirical study of consciousness and mind, the emergence of behaviorism, cognitive psychology and the re-emergence of the study of mind, initial ideas about the role of consciousness in human information processing, the strengths of functionalist accounts of mind, the weaknesses of functionalist accounts of consciousness, competing psychological theories about the nature and function of consciousness, interdisciplinary influences, and the formation of Consciousness Studies.

This is the third of four online Companions to Velmans, M. (ed.) (2018) Consciousness (Critical Concepts in Psychology), a 4-volume collection of Major Works on Consciousness commissioned by Routledge, London. The Companion to Volume 3 introduces major phases and findings in the search for the neural correlates of consciousness (NCC) starting with the time it takes for these to form and the wider research program that might lead to their discovery. This includes the search for mechanisms responsible for “neural binding”—how widely dispersed neural activities support integrated conscious experiences, and the search for neural markers of consciousness that can serve to distinguish conscious from preconscious and unconscious activities in the brain. We then turn to global disorders of consciousness that indirectly reveal the conditions that support consciousness by establishing what abolishes it or impairs it, and conclude this section with reviews of the major challenges in the search for NCCs that still remain. This survey then continues with research on the divided brain with cerebral commissurotomy patients, which proved to be very useful in determining the respective functions of the left and right halves of the brain. It also raised philosophical questions. Could consciousness itself be divided by this operation? And, if so, would such patients have a distinct left-brain and right-brain consciousness? Philosophical issues also combine with methodological and experimental developments in the following sections on the reintroduction of first-person methods and how to combine these with complementary, third-person methods in neurophenomenology and experiential neuroscience—two well-developed research programs for both investigating consciousness and understanding its functions. This Companion (and associated Volume) then concludes with a survey of research on free will, covering both the major findings arising from neuropsychological research and a way to understand these that is consistent with a natural understanding of volition, ethics, and legal responsibility. As with the other Companions to these Volumes there are many links to background resources (marked in pink) and to the selected readings themselves (marked in blue).

Theorien über die Bewusstseinsevolution stehen in engem Zusammenhang mit Theorien über die Präsenz von Bewusstsein. Entsprechende Auffassungen bewegen sich zwischen dem Standpunkt, dass nur menschliche Wesen ein Bewusstsein haben, und der These, dass jegliche Materie in gewisser Weise über ein Bewusstsein verfügt. Allgemein formuliert, können diese Theorien in Diskontinuitäts- und Kontinuitätstheorien eingeteilt werden. Gemäß den Diskontinuitätstheorien ist das Bewusstsein erst dann in Erscheinung getreten, nachdem die Formen der Materie den gegebenen Evolutionsstand erreicht hatten, doch werden verschiedene Kriterien zur Bestimmung ebendieses Evolutionsstandes vorgeschlagen. Die Kontinuitätstheorien vertreten die Ansicht, dass im Falle primärer Lebensformen die Materie stets von Bewusstsein begleitet sei; mit der Weiterentwicklung von Form und Komplexität der Materie habe jedoch auch das Bewusstsein einen Koevolutionsprozess durchlaufen und so beispielsweise Formen erlangt, die wir heute in menschlichen Wesen erkennen. In Anbetracht unseres beschränkten Wissens über die erforderlichen Voraussetzungen für das Vorhandensein von Bewusstsein im Gehirn des Menschen bleiben alle Möglichkeiten offen. Alles in allem jedoch zeichnet sich die Kontinuitätstheorie durch größere Eleganz als die Diskontinuitätstheorie aus