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On the relationship between motor and perceptual behavior - an SDT framework| old_uid | 9064 |
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| title | On the relationship between motor and perceptual behavior - an SDT framework |
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| start_date | 2010/09/20 |
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| schedule | 16h |
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| online | no |
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| summary | Starting with Goodale & Milner’s (1992) neuropsychological observations, a large number of neuropsychological and psychophysical studies has documented a putative dissociation between perception and action. However, a closer inspection of this literature reveals a number of methodological and conceptual shortcomings. I shall present a series of experiments making use of a variety of psychophysical techniques designed to gauge the relationship between, on the one hand, Reaction Times and Saccade and Hand pointing biases and, on the other hand, observers’ perceptual states as assessed for close to threshold (masked – metacontrast – and not-masked) stimuli via Yes/No paradigms. All these studies reveal a strong motor-perceptual state correlation indicating that motor and perceptual responses are based on a unique internal response. A one-path-two-decisions stochastic race model drawing on standard Signal Detection Theory provides a fair account of some of the data, hence overruling the necessity of a model with dual processing of visual stimulation. |
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| responsibles | Fabre-Thorpe |
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