May 2008
Volume 8, Issue 6
Free
Vision Sciences Society Annual Meeting Abstract  |   May 2008
Category expectation modulates object-selective cortical activity
Author Affiliations
  • Michael Esterman
    Department of Psychological and Brain Sciences, Johns Hopkins University
  • Steven Yantis
    Department of Psychological and Brain Sciences, Johns Hopkins University
Journal of Vision May 2008, Vol.8, 555. doi:10.1167/8.6.555
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      Michael Esterman, Steven Yantis; Category expectation modulates object-selective cortical activity. Journal of Vision 2008;8(6):555. doi: 10.1167/8.6.555.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Selective visual attention directed to a location (even in the absence of a stimulus) has been shown to increase activity in the visual cortex and to enhance perception of targets behaviorally. We further explored this effect by manipulating observers' expectations about the category of an upcoming target. Observers viewed a display in which an object (either a face or a house) gradually coheres from a state of dynamic noise; a cue established expectation about the object category. Behavioral data demonstrate that observers were faster to make discriminations about these images when the type of object matched their expectation. fMRI data reveal that this priming was associated with anticipatory increases in object-specific visual cortex, even in the absence of object-specific visual information. Expecting a face evoked increased activity in several face-selective cortical regions including the fusiform gyrus, superior temporal sulcus, and inferior occipital cortex. Conversely, expecting a house produced increased activity in parahippocampal regions. Brain regions associated with expecting faces and houses are contained within those associated with the perception of faces and houses, suggesting that visual anticipation involves similar mechanisms as involved in perception. Visual expectation leads to ‘seeing’ what we expect to see.

Esterman, M. Yantis, S. (2008). Category expectation modulates object-selective cortical activity [Abstract]. Journal of Vision, 8(6):555, 555a, http://journalofvision.org/8/6/555/, doi:10.1167/8.6.555. [CrossRef]
Footnotes
 NIH grant R01 DA13165.
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