Online research in philosophy

Some philosophers argue that Descartes was wrong when he characterized animals as purely physical automata – robots devoid of consciousness. It seems to them obvious that animals (tigers, lions, and bears, as well as chimps, dogs, and dolphins, and so forth) are conscious. There are other philosophers who argue that it is not beyond the realm of possibilities that robots and other artificial agents may someday be conscious – and it is certainly practical to take the intentional stance toward them (the robots as well as the philosophers) even now. I'm not sure that there are philosophers who would deny consciousness to animals but affirm the possibility of consciousness in robots. In any case, and in whatever way these various philosophers define consciousness, the majority of them do attribute consciousness to humans. Amongst this group, however, there are philosophers and scientists who want to reaffirm the idea, explicated by Shadworth Holloway Hodgson in 1870, that in regard to action the presence of consciousness does not matter since it plays no causal role. Hodgson's brain generated the following thought: neural events form an autonomous causal chain that is independent of any accompanying conscious mental states. Consciousness is epiphenomenal, incapable of having any effect on the nervous system. James (1890, 130) summarizes the situation.

One of the central problems in the study of consciousness concerns the ascription of consciousness. We want to know whether certain kinds of creatures—such as non-human animals, artificially created organisms, and even members of our own species who have suffered severe brain-damage—are conscious, and we want to know what kinds of conscious states these creatures might be in if indeed they are conscious. The identification of accurate markers of consciousness is essential if the science of consciousness is to have any chance of success.

The neurophilosophy of consciousness brings neuroscience to bear on philosophical issues concerning phenomenal consciousness, especially issues concerning what makes mental states conscious, what it is that we are conscious of, and the nature of the phenomenal character of conscious states. Here attention is given largely to phenomenal consciousness as it arises in vision. The relevant neuroscience concerns not only neurophysiological and neuroanatomical data, but also computational models of neural networks. The neurophilosophical theories that bring such data to bear on the core philosophical issues of phenomenal conscious construe consciousness largely in terms of representations in neural networks associated with certain processes of attention and memory.

The Latin conscius does not translate anything like mind or consciousness. Only in the mid-nineteenth century do we find the first attempts to study consciousness as its own discipline. Wundt, James, and Freud disagreed about how to approach the science of consciousness, although agreeing that psychology was a 'science of consciousness' that takes lived biological experience as its object. The behaviorists vetoed this idea. By the 1950s, for cognitive science, mind (conscious and unconscious) was considered analogous to computer software. Recently, the science of consciousness has returned as Consciousness Studies, a new interdisciplinary synthesis of neuroscience, psychology, philosophy, and cultural anthropology. But what is new in this renaissance of the science of consciousness? New first, second and third person approaches all propose to take consciousness itself as a variable. This approach is as controversial as the nineteenth-century science of consciousness--controversy perhaps inherent to any science of consciousness.

It is widely held that there is an important distinction between the notion of consciousness as it is applied to creatures and, on the other hand, the notion of consciousness as it applies to mental states. McBride has recently argued in this journal that whilst there may be a grammatical distinction between state consciousness and creature consciousness, there is no parallel ontological distinction. It is argued here that whilst state consciousness and creature consciousness are indeed related, they are distinct properties. Conscious creatures can have, at one time, both conscious and unconscious mental states. This raises the question of what distinguishes the conscious from unconscious mental states of a subject: a question about what state consciousness consists in. Whilst the state/creature distinction may not be of use in explaining every aspect of a subject's consciousness, it does provide a key part of the explanandum for theories of consciousness and mind. The state/creature consciousness distinction is a real one and should not be dropped from our psychological taxonomy.

In order to distinguish the conscious state itself from its aspects and contents we need an answer to the question "if there is something it is like to be conscious, what is it?" A succinct answer to this question is provided in the form of a common denominator of all conscious states. This characterization of the conscious state has implications for the systematic study of consciousness through its bearing on a number of concrete issues connected with the nature of consciousness and its relation to the biology of brains and their evolution. These are discussed with a view to delineating the characteristics of consciousness, suggesting the primary functional role of consciousness in the total economy of brain functions, and exploring the tractability of the problem of consciousness from the standpoint of ordinary science. 1997.

I begin by considering Ned Block's widely accepted distinction between phenomenal and access consciousness. I argue that on Block's official characterization a mental state's being access conscious is not a way the state's being conscious in any intuitive sense; that if phenomenal consciousness itself corresponds to an intuitive way of a state's being conscious, it literally implies access consciousness; and that Block misconstrues the theoretical significance of the commonsense distinction. These considerations point to the view that mental states' being conscious consists in their being accompanied by occurrent, assertoric thoughts to the effect that one is in the state in question: what I have elsewhere called higher- order thoughts (HOTs). After outlining the model, I sketch theoretical advantages having to do with introspective consciousness, the relationship between consciousness and speech, and the metacognitive phenomenon known as feeling-of-knowing judgments. I conclude by showing that the HOT model does justice to phenomenal consciousness: Sensory states are not all conscious, and HOTS explain why there is something it is like to be in those which are.

In recent philosophy of mind, it is often assumed that consciousness and self-consciousness are two separate phenomena. In this paper, I argue that this is not quite right. The argument proceeds in two phases. First, I draw a distinction between (i) being self-conscious of a thought that p and (ii) self-consciously thinking that p. I call the former transitive self-consciousness and the latter intransitive self-consciousness. I then argue that consciousness does depend on intransitive self-consciousness, and that the common reasons for denying the dependence of consciousness upon self-consciousness apply only to transitive self-consciousness.

This article defends two theses: that a mental state is conscious if and only if it has phenomenal character, i.e., if and only if there is something it is like for the subject to be in that state, and that all state consciousness involves self-consciousness, in the sense that a mental state is conscious if and only if its possessor is, in some suitable way, conscious of being in it. Though neither of these theses is novel, there is a dearth of direct arguments for them in the scholarly literature and the relationship between them has so far gone underrecognized. This article attempts to remedy this lack, advancing the claim that if all conscious states have phenomenal character, then all state consciousness involves self-consciousness.

In recent years, numerous studies have tried to highlight, from a naturalistic point of view, the apparent mysteries of consciousness. Many authors concentrated their efforts on explaining the phylogenetic origins of consciousness. Paradoxically, comments on the ontogenesis of consciousness are almost nonexistent. By crossing the results of psychology of development with a philosophical analysis, this paper aims to make up for this omission. After having characterized the different conceptual aspects of consciousness, we combine these, with observations made by developmental psychologists, to trace the empirical development of consciousness during the first months of life. This combination leads to a theoretical proposal: the intentional characteristics of consciousness, namely, aboutness and purposefulness, depend on the phenomenal properties of conscious states. From this perspective, the phenomenal aspect of conscious states (the "what it is like" effect) is therefore far from being an epiphenomenon.