Place, U. T. (1997h). Wundt's theory of imageless thought as a possible key to the role of slow-wave sleep in depressive ruminations [Conference presentation, presented at the Sixth Annual Meeting of the European Society for Philosophy and Psychology (ESPP), Padova, 28th August 1997]. European Society for Philosophy and Psychology
[Abstract]Sleep contributes in two ways to the aetiology of clinical depression. The dream imagery of REM sleep stamps in associations between current environmental events and other emotionally charged incidents in the past, only some of which are depressive in nature. The imageless ruminations of slow-wave sleep have a more specific depressive effect in that they keep alive, often indefinitely, problems for which no solution is to be found.
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Download: 1997h Wundt's Theory of Imageless Thought as Possible Key to the Role of Slow-Wave Sleep in Depressive Ruminations.pdf

Place, U. T. (1999d). Connectionism and the problem of consciousness. Acta Analytica, 14(22), 197-226.
[Abstract]This paper falls into three parts. In Part 1 I give my reasons for rejecting two aspects of Horgan and Tienson's position as laid out in their book, the language of thought and belief-desire explanations of behaviour, while endorsing the connection they see between linguistic syntax and the syntax of a motor skill. In Part 2 I outline the theory that the brain consists of two input-output transformation systems consciousness whose function is (a) to categorise problematic inputs, (b) to select a response appropriate to such inputs once they have been categorised and (c) to initiate and monitor the execution of such response once selected, and the "zombie-within" whose function is (a) to identify and alert consciousness to any inputs that are problematic either because they are unexpected or because they are significant relative to the agent's current or perennial motivational concerns. In Part 3 I consider how far the properties of the two systems outlined in Part 2 can be understood in terms of the known properties of connectionist networks.
Keywords: connectionism, consciousness, problematic input, zombie-within
Note:
The download file contains some text added by the author after publication. Footnote 2 is added.
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Download: 1999d Connectionism and the Problem of Consciousness.pdf

Place, U. T. (2000c). The role of the hand in the evolution of language. Psycoloquy, 11(7), January 23. www.cogsci.ecs.soton.ac.uk/cgi/psyc/newpsy?11.007
[Abstract]This article has four sections. Section I sets out four principles which should guide any attempt to reconstruct the evolution of an existing biological characteristic. Section II sets out thirteen principles specific to a reconstruction of the evolution of language. Section III sets out eleven pieces of evidence for the view that vocal language must have been preceded by an earlier language of gesture. Based on those principles and evidence, Section IV sets out seven proposed stages in the process whereby language evolved: (1) the use of mimed movement to indicate an action to be performed, (2) the development of referential pointing which, when combined with mimed movement, leads to a language of gesture, (3) the development of vocalisation, initially as a way of imitating the calls of animals, (4) counting on the fingers leading into (5) the development of symbolic as distinct from iconic representation, (6) the introduction of the practice of question and answer, and (7) the emergence of syntax as a way of disambiguating utterances that can otherwise be disambiguated only by gesture.
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Download: 2000c The Role of the Hand in the Evolution of Language.pdf