Expectancy effects on spatial frequency processing

Sowden, PT, Ozgen, E, Schyns, PG and Daoutis, C (2003) Expectancy effects on spatial frequency processing Vision Research, 43 (26). pp. 2759-2772.

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Abstract

We explored top-down modulation of spatial frequency (SF) processing. When auditory pre-cueing directed observers' attention to one of two 4-octaves (SF) apart plaid components observers tended to perceive the cued component, suggesting selective attention to the SF channel they expected to carry task relevant information. In agreement, pre-cueing had no effect with components often processed by the same channel (0.5-octaves apart). Further, effects of expectancy were greater than of uncertainty and were SF tuned. Combined our findings suggest top-down modulation of early, cortical, SF processing. We argue this could similarly explain the previously reported influences of categorisation on SF processing

Item Type:	Article
Divisions :	Surrey research (other units)
Authors :	Name Email ORCID Sowden, PT p.sowden@surrey.ac.uk Ozgen, E Schyns, PG Daoutis, C c.daoutis@surrey.ac.uk
Date :	1 December 2003
DOI :	10.1016/S0042-6989(03)00480-2
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 09:24
Last Modified :	24 Jan 2020 16:51
URI:	http://epubs.surrey.ac.uk/id/eprint/823586

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