CSE 719: Computational Theories of Consciousness, Fall 2009 ======================================================================== Edelman (2003) quotes (for bib info, see online bibliography) ======================================================================== 1. p. 5521, col 1, para 2 ------------------------------------------------------------------------ "To expect that a theoretical explanation of consciousness can itself provide an observer with the experience of 'the redness of red' is to ignore just those phenotypic properties and life history that enable an individual animal to know what it is like to be such an animal. A scientific theory cannot presume to replicate the experience that it describes or explains; a theory to account for a hurricane is not a hurricane. A third-person description by a theorist of the qualia associated with wine tasting can, for exammple, take detailed account of the reported personal experiences of that theorist and his human subjects. It cannot, however, directly convey or induce qualia by description; to experience the discriminations of an individual, it is necessary to be that individual. ...this [is an] inherent limitation imposed by privacy." Searle on Edelman (Mystery of Csness 1997:41) ------------------------------------------------------------------------ "The brain has a problem to solve. It has to develop perceptual categories beginning with shapes, color, movement, and eventually including objects--tree, horse, and cup--and it has to be able to abstract general concepts. It has to do all this in a situation where the world is not already labeled and divided up into categories, and in which the brain has no program in advance and no homunculus inside to guide it." 2. p. 5523, col 2, para 1 ------------------------------------------------------------------------ "A scientific view that assumes that consciousness arises from reentrant interactions among neural populations must therefore conclude that it is the neural activity of the dynamic core [reentrant events occurring in the thalamocortical system] that is causal. If we call that activity C' and the qualia it entails C, then it is C' that is the cause of our actions and further C' events [RECALL OUR COMMUTATIVE BRAIN/MIND CAUSAL DIAGRAM]. Some philosophers have recoiled from this view, considering it as simply another version of epiphenomenalism or even dualism. There is, however, no need to conclude that C is therefore meaningless and unnecessary; C states are informational even if not causal. C states are the discriminations entailed by causal transactions among C' states. ... The reports of a first person subject will be necessary, and necessarily they will be in C language. When we speak to each other, our speech is drawn from C', as is all our activity, but it is in C terms that we carry out our exchanges." 3. p. 5524, col 2, para 1: ------------------------------------------------------------------------ "Given the hyperastronomical functional connectivity peatterns of the dynamic core, ... no two subjects can have identical core activity."