In recent years new findings in vertebrate neuroanatomy have challenged received views on the evolution of the brain. Established theories suggesting that new structures are added to older structures or that old structures are modified into new ones are being re-evaluated. Modification processes, such as invasion and parcellation, have proved to be less valid than originally assumed. Discoveries of neuroanatomical homologies add to the cladistic interpretation problems.

It was not long ago when the consciousness was not considered a problem for science. However, this has now changed and the problem of consciousness is considered the greatest challenge to science. In the last decade, a great number of books and articles have been published in the field, but very few have focused on the how consciousness evolves and develops, and what characterizes the transitions between different conscious states, in animals and humans. This book addresses these questions. Renowned researchers (...) from different fields of science (including neurobiology, evolutionary biology, ethology, cognitive science, computational neuroscience and philosophy) contribute with their results and theories in this book, making it a unique collection of the state-of-the-art of this young field of consciousness studies. - First book on the topic - Focus on different levels of consciousness, including: Evolutionary, developmental, and functional - Highly interdisciplinary. (shrink)

Report on the Agora Workshop, in Sigtuna, Sweden, on 11-3 August 2001, Agora for Biosystems, P.O. Box 57, SE-193 22 Sigtuna, Sweden.

This article examines three aspects of the problem of understanding Benjamin Libet’s idea of conscious will causally interacting with certain neural activities involved in generating overt bodily movements. The first is to grasp the notion of cause involved, and we suggest a definition. The second is to form an idea of by what neural structure(s) and mechanism(s) a conscious will may control the motor activation. We discuss the possibility that the acts of control have to do with levels of supplementary (...) motor area activity and with the activation of populations of excitatory and inhibitory interneurons. The third aspect is to conceive of the main features of Libet’s proposed conscious mental field (CMF). We consider both an ontological and an epistemological interpretation of the CMF being nonphysical. In an attempt to refute the idea that Libet’s dualist mind–brain interactionism would violate the law of conservation of energy, we suggest that a CMF may alter the probability of the ion-channel gating by influencing structures of a size to which quantum mechanics needs to be applied. We argue that given the suggested definition of cause, and given the epistemological interpretation of the CMF being nonphysical, nothing would necessarily rule out that an element of a CMF, conscious will, may causally interact with neural activities in the brain. This defense of the idea of conscious will being causally efficacious has a bearing not only on the understanding of the mind–brain relation but also on the free will debate. (shrink)

This article compares Wolfgang Köhler's pioneering field theory of the consciousness–brain relation with Benjamin Libet's conscious mental field theory and Karl Popper's mental force field hypothesis. In the discussion of Köhler's theory we devote special attention to his analysis of problems of sense perception and to his explanation of figural after-effects. Both Libet and Popper take consciousness to causally interact with the brain, and we argue that even Köhler presupposes an interactionist interpretation of the consciousness–brain relation. We argue that nothing (...) necessarily rules out that consciousness as something subjective may causally interact with the brain as something objective. We discuss an evolutionary argument for the theory that consciousness causally interacts with the brain, and we consider some arguments for consciousness having had a survival value. (shrink)

The main objective of this essay is to validate some of the principal, currently competing, mammalian consciousness-brain theories by comparing these theories with data on both cognitive abilities and brain organization in birds. Our argument is that, given that multiple complex cognitive functions are correlated with presumed consciousness in mammals, this correlation holds for birds as well. Thus, the neuroanatomical features of the forebrain common to both birds and mammals may be those that are crucial to the generation of both (...) complex cognition and consciousness. The general conclusion is that most of the consciousness-brain theories appear to be valid for the avian brain. Even though some specific homologies are unresolved, most of the critical structures presumed necessary for consciousness in mammalian brains have clear homologues in avian brains. Furthermore, considering the fact that the reptile-bird brain transition shows more structural continuity than the stem amniote-mammalian transition, the line drawn at the origin of mammals for consciousness by several of the theorists seems questionable. An equally important point is that consciousness cannot be ruled out in the absence of complex cognition; it may in fact be the case that consciousness is a necessary prerequisite for complex cognition. (shrink)

How do we change the normative landscape by making requests? It will be argued that by making requests we create reasons for action if and only if certain conditions are met. We are able to create reasons if and only if doing so is valuable for the requester, and if they respect the requestee. Respectful requests have a normative force – it will be argued – because it is of instrumental value to us that we all have the normative power (...) of creating reasons by making requests. The normative power has the potential for creating and shaping valuable interactions and relationships for the requester and the requestee. This potential could not be realized if we did not have the normative power of making requests. It will also be shown why this account of the normative force of requests should be preferred to the two alternative accounts of the reason-giving force of requests that have been put forward by James H.P. Lewis and David Enoch. (shrink)

Kinship terminologies are basic cognitive semantic systems that all human societies use for organizing kin relations. Diversity in kinship systems and their categories is substantial, but constrained. Rácz, Passmore, and Jordan explore hypotheses about such constraints from learning theories and social pressures, testing the impact of a community‐size driven learning bottleneck against the social coordination demands of different kinds of marriage and resource systems.

Everyone allows that human and animal minds are distinctively (indeed, massively) different in their manifest effects. Humans have been able to colonize nearly every corner of the planet, from the artic, to deserts, to rainforests (and they did so in the absence of modern technological aids); they live together in large cooperative groups of unrelated individuals; they communicate with one another using the open-ended expressive resources of natural language; they are capable of cultural learning that accumulates over generations to result (...) in science, art, and agriculture; and they are remarkably thoughtful and inventive. There is much less agreement about how these manifest differences should be explained, however. (shrink)

Methodological questions concerning Chomsky’s generative approach to linguistics have been debated without consensus. The status of linguistics as psychology, the psychological reality of grammars, the character of tacit knowledge and the role of intuitions as data remain heatedly disputed today. I argue that the recalcitrance of these disputes is symptomatic of deep misunderstandings. I focus attention on Michael Devitt’s recent extended critique of Chomskyan linguistics and I suggest that his complaints are based on a failure to appreciate the special status (...) of Chomsky’s computational formalisms found elsewhere in cognitive science. Devitt ascribes an intentional conception of representations that Chomsky repudiates and that is independently implausible. I argue that Devitt’s proposed “linguistic reality ” as the proper subject matter of linguistics neglects the problems of tokens as opposed to types and he misses the force of Chomsky’s arguments against Behaviourism and nominalism. I suggest that Devitt’s case against intuitions as data misunderstands their standard role throughout perceptual psychology. Finally, of more general interest, I argue that Devitt’s position exemplifies compelling errors concerning mental representation seen throughout cognitive science and philosophy of mind. (shrink)

I explore a strand of reception history that follows Rudolf Carnap’s shift from a purely syntactical analysis of constructed languages to his conception of pure semantics. My exploration focuses on Gustav Bergmann’s and Everett Hall’s interpretation of pure semantics, their understanding of what constitutes a ’formal’ investigation of language, and their arguments concerning the relationship between expressions and their extra-linguistic referents. I argue that Bergmann and Hall strongly misread Carnap’s semantic project and, subsequently, their misunderstanding is passed down through colleagues (...) and students. (shrink)

In this essay, I claim that certain passages in Book IV of Benedict de Spinoza’s Ethics suggest a novel version of what is known as metaethical constructivism. The constructivist interpretation emerges in the course of attempting to resolve a tension between Spinoza’s apparent ethical egoism and some remarks he makes about the efficacy of collaborating with the right partners when attempting to promote our individual self-interest . Though Spinoza maintains that individuals necessarily aim to promote their self-interest, I argue that (...) Spinoza has an atypical conception of self that allows the interests of other people to be partially constitutive of one's own self-interest. In this way, Spinoza can account for the rationality of concern for the interests of others . This interpretation attributes to Spinoza a form of constructivism that differs in important ways from contemporary Humean and Kantian constructivisms and which can in principle be detached from Spinoza’s particular metaphysical commitments in order to yield a third general category of constructivist view . Though my treatment is necessarily brief, it is my hope that it can serve both to motivate a constructivist reading of Spinoza and, perhaps even more crucially, to suggest a Spinozistic variety of constructivism as a live theoretical option in metaethics. (shrink)

This volume is a collection of some of the most important philosophical papers by Peter Gärdenfors. Spanning a period of more than 20 years of his research, they cover a wide ground of topics, from early works on decision theory, belief revision and nonmonotonic logic to more recent work on conceptual spaces, inductive reasoning, semantics and the evolutions of thinking. Many of the papers have only been published in places that are difficult to access. The common theme of all (...) the papers is the dynamics of thought. Several of the papers have become minor classics and the volume bears witness of the wide scope of Gärdenfors’ research and of his crisp and often witty style of writing. The volume will be of interest to researchers in philosophy and other cognitive sciences. (shrink)

The primary aim of this important study is to produce a reliable account of Peter Martyr’s life before he left Italy in 1542. Earlier biographers had been content to follow the Swiss Calvinist Josiah Simler, who knew Peter Martyr in later years, delivered his funeral oration and published it in 1563. Dr McNair has tried ‘to delve beneath Simler to contemporary records’. He has discovered, for example, that Peter Martyr was born in 1499 not, as is usually (...) said, in 1500. He has been concerned to find out when Peter Martyr left his order and his Church, suggesting that there is little reason to believe that his apostasy began in his years at the University of Padua, 1518-26; it was in Naples, between 1537 and 1540, when he came to know Juan de Valdés, that Peter Martyr’s conversion took place. ‘He arrived a reformer after the order of Ximénez, he left a reformer after the order of Zwingli’, writes Dr McNair, meaning by this the Zwingli of the years immediately before 1523, when he wished to go further than Erasmus but not so far as Luther. (shrink)

This is the first comprehensive study of the philosophical achievements of twelfth-century Western Europe. It is the collaboration of fifteen scholars whose detailed survey makes accessible the intellectual preoccupations of the period, with all texts cited in English translation throughout. After a discussion of the cultural context of twelfth-century speculation, and some of the main streams of thought - Platonic, Stoic, and Arabic - that quickened it, comes a characterisation of the new problems and perspectives of the period, in scientific (...) inquiry, speculative grammar, and logic. This is followed by a closer examination of the distinctive features of some of the most innovative thinkers of the time, from Anselm and Abelard to the School of Chartres. A final section shows the impact of newly recovered works of Aristotle in the twelfth-century West. (shrink)

This article evaluates the scientific credentials of a distinction that is frequently endorsed by scientists who study human reasoning, between so-called “System 1” and “System 2”. The paper argues that one aspect of what is generally intended by this distinction is real. In particular, there is a real distinction between intuitive and reflective cognitive processes. But this distinction fails to line up with many of the other properties attributed to System 1 and System 2. Accordingly, the paper argues that the (...) latter distinction is not real, and should be abandoned. (shrink)

Suppose that time is infinitely long towards the future, and that each feasible action produces a finite amount of utility at each time. Then, under appropriate conditions, each action produces an infinite amount of utility. Does this mean that utilitarianism lacks the resources to discriminate among such actions? Since each action produces the same infinite amount of utility, it seems that utilitarianism must judge all actions permissible, judge all actions impermissible, or remain completely silent. If the future is infinite, that (...) is, the prospects for utilitarianism look bleak. (shrink)

In this chapter I assume that we accept, perhaps reluctantly, general facts, that is states of affairs corresponding to universal generalizations. I then argue that, without any addition, this ontology provides us with physical necessities, and moreover with various grades of physical necessity, including the strongest grade, which I call absolute physical necessity. In addition there are consequences for our understanding of time. For this account, which I call the Mortmain Theory, provides a defence of No Futurism against an otherwise (...) serious objection due to David Armstrong. In addition the Mortmain theory enables me to argue against the ‘‘Parmenidean’’ or Block Universe position that future and past are both real. (shrink)

In his short life, Alan Turing (1912-1954) made foundational contributions to philosophy, mathematics, biology, artificial intelligence, and computer science. He, as much as anyone, invented and showed how to program the digital electronic computer. From September, 1939, his work on computation was war-driven and brutally practical. He developed high speed computing devices needed to decipher German Enigma Machine messages to and from U-boats, countering the most serious threat by far to Britain..

A major problem with the Christian doctrine of the Incarnation is that Jesus is meant to be both God and man. Richard Swinburne attempts to overcome the problem by having it that in him there are two consciousnesses – the consciousness of being God, and the consciousness of being a man. This position is rejected, on the Aristotelian ground that one consciousness is enough to explain with dignity the mind of Christ.

In a recent Chapter, Alexander Pruss attempts to defend the traditional Christian doctrine of Eucharistic Transubstantiation. It is objected that his case is unconvincing, since it involves accidents and dispositions existing without subjects, and an inadequate account of the Eucharistic presence of Christ. It is argued that the doctrine can yet be maintained, along Aristotelian-Thomistic lines.