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Type: Journal article
Title: Motion perception as inconsistent
Author: Mortensen, C.
Citation: Philosophical Psychology, 2012; 2012(6):1-12
Publisher: Carfax Publishing
Issue Date: 2012
ISSN: 0951-5089
Statement of
Chris Mortensen
Abstract: This paper offers an inconsistent model of motion perception. It was prompted by work on inconsistent motion due to Hegel and, following him, Priest. But the paper skirts Hegel's full scale idealism, by proposing that the inconsistency is with the cognitive contents of motion perception. The paper draws on work in the psychology of perception, and in the theory of inconsistency. I begin by noting the prima facie argument that temporal change threatens inconsistency, and canvassing ways in which this might be avoided. The orthodox reply to the prima facie argument is that one and the same thing can have different incompatible properties at different times. This is plausible when applied to motion in the physical world. However, applied to cognition, it can be seen that the phenomenon of phi or beta, combined with the mechanism of a Reichardt detector, lends support to one key step in the prima facie argument, namely re-identification over time. The inconsistency of the model is then seen to follow from application of the Fade Principle. Advantages of the model are stressed: including a simple explanation of the debilitating condition of akinetopsia, that is, motion blindness; and a suggestion as to how to account for the “moving now.”
Keywords: Motion; Perceptual; Perceptual Motion; Inconsistent
Description: Article first published online: 21 Jun 2012
Rights: © 2012 Taylor & Francis
RMID: 0020126238
DOI: 10.1080/09515089.2012.696328
Appears in Collections:Philosophy publications

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