Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.neuroimage.2012.10.036
Title: Preparatory patterns of neural activity predict visual category search speed
Authors: Soon, C.S.
Namburi, P.
Chee, M.W.L. 
Keywords: FMRI
LOC
MVPA
Preparatory attention
Visual semantics
Issue Date: 1-Feb-2013
Citation: Soon, C.S., Namburi, P., Chee, M.W.L. (2013-02-01). Preparatory patterns of neural activity predict visual category search speed. NeuroImage 66 : 215-222. ScholarBank@NUS Repository. https://doi.org/10.1016/j.neuroimage.2012.10.036
Abstract: Rapidly detecting target object categories when objects are embedded in naturalistic scenes is facilitated by preparatory baseline signal changes. However, it is unclear as to what information most strongly predicts perceptual speed in terms of the minimal exposure duration required for accurate detection. Using novel surface-based spatiotemporal pattern classification, we found that while category-specific biases resulting from merely providing a category name can be detected in multiple cortical areas, only biases in lateral occipital complex predicted perceptual speed. These biases likely carry visual semantic information regarding multiple object categories placed in familiar scene contexts. Discriminatory voxels during the preparatory period showed congruent category-selectivity during visual stimulation. © 2012 Elsevier Inc.
Source Title: NeuroImage
URI: http://scholarbank.nus.edu.sg/handle/10635/110226
ISSN: 10538119
DOI: 10.1016/j.neuroimage.2012.10.036
Appears in Collections:Staff Publications

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