Cortical depth dependent population receptive field attraction by spatial attention in human V1

Klein, B. P., Fracasso, A. , van Dijk, J. A., Paffen, C. L.E., Te Pas, S. F. and Dumoulin, S. O. (2018) Cortical depth dependent population receptive field attraction by spatial attention in human V1. NeuroImage, 176, pp. 301-312. (doi:10.1016/j.neuroimage.2018.04.055) (PMID:29709626)

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Abstract

Visual spatial attention concentrates neural resources at the attended location. Recently, we demonstrated that voluntary spatial attention attracts population receptive fields (pRFs) toward its location throughout the visual hierarchy. Theoretically, both a feed forward or feedback mechanism could underlie pRF attraction in a given cortical area. Here, we use sub-millimeter ultra-high field functional MRI to measure pRF attraction across cortical depth and assess the contribution of feed forward and feedback signals to pRF attraction. In line with previous findings, we find consistent attraction of pRFs with voluntary spatial attention in V1. When assessed as a function of cortical depth, we find pRF attraction in every cortical portion (deep, center and superficial), although the attraction is strongest in deep cortical portions (near the gray-white matter boundary). Following the organization of feed forward and feedback processing across V1, we speculate that a mixture of feed forward and feedback processing underlies pRF attraction in V1. Specifically, we propose that feedback processing contributes to the pRF attraction in deep cortical portions.

Item Type:Articles
Additional Information:This work was supported in part by the Netherlands Organisation for Scientific Research (NWO) grant numbers (NWO 406-12-141 to B. P. K. and S. O. D.) and Ammodo KNAW Award (S. O. D).
Keywords:Attention field, population receptive field, receptive field attraction, spatial attention, sub-millimeter fMRI, visual cortex
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Fracasso, Dr Alessio
Authors: Klein, B. P., Fracasso, A., van Dijk, J. A., Paffen, C. L.E., Te Pas, S. F., and Dumoulin, S. O.
College/School:College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
Journal Name:NeuroImage
Publisher:Elsevier
ISSN:1053-8119
ISSN (Online):1095-9572
Published Online:27 April 2018
Copyright Holders:Copyright © 2018 Elsevier
First Published:First published in NeuroImage 176:301-312
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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