Visual surround suppression in schizophrenia

Tibber, Marc S.; Anderson, Elaine J.; Bobin, Tracy; Antonova, Elena; Seabright, Alice; Wright, Bernice; Carlin, Patricia; Shergill, Sukhwinder S.; Dakin, Steven C.

doi:10.3389/fpsyg.2013.00088

Visual surround suppression in schizophrenia

Tibber, Marc S.; Anderson, Elaine J.; Bobin, Tracy; Antonova, Elena; Seabright, Alice; Wright, Bernice; Carlin, Patricia; Shergill, Sukhwinder S.; Dakin, Steven C.

Authors

Marc S. Tibber

Elaine J. Anderson

Tracy Bobin

Elena Antonova

Alice Seabright

Dr Bernice Wright Bernice.Wright@hull.ac.uk
Lecturer

Patricia Carlin

Sukhwinder S. Shergill

Steven C. Dakin

Abstract

Compared to unaffected observers patients with schizophrenia (SZ) show characteristic differences in visual perception, including a reduced susceptibility to the influence of context on judgments of contrast – a manifestation of weaker surround suppression (SS). To examine the generality of this phenomenon we measured the ability of 24 individuals with SZ to judge the luminance, contrast, orientation, and size of targets embedded in contextual surrounds that would typically influence the target’s appearance. Individuals with SZ demonstrated weaker SS compared to matched controls for stimuli defined by contrast or size, but not for those defined by luminance or orientation. As perceived luminance is thought to be regulated at the earliest stages of visual processing our findings are consistent with a suppression deficit that is predominantly cortical in origin. In addition, we propose that preserved orientation SS in SZ may reflect the sparing of broadly tuned mechanisms of suppression. We attempt to reconcile these data with findings from previous studies.

Citation

Tibber, M. S., Anderson, E. J., Bobin, T., Antonova, E., Seabright, A., Wright, B., Carlin, P., Shergill, S. S., & Dakin, S. C. (2013). Visual surround suppression in schizophrenia. Frontiers in Psychology, 4(FEB), Article 88. https://doi.org/10.3389/fpsyg.2013.00088

Journal Article Type	Article
Acceptance Date	Jan 23, 2013
Publication Date	Feb 28, 2013
Deposit Date	Jul 5, 2018
Publicly Available Date	Jul 26, 2018
Journal	Frontiers in Psychology
Electronic ISSN	1664-1078
Publisher	Frontiers Media
Peer Reviewed	Peer Reviewed
Volume	4
Issue	FEB
Article Number	88
DOI	https://doi.org/10.3389/fpsyg.2013.00088
Keywords	Schizophrenia; Surround suppression; Cortex; Contrast; Luminance; Size; Orientation; Perception
Public URL	https://hull-repository.worktribe.com/output/912095
Publisher URL	https://www.frontiersin.org/articles/10.3389/fpsyg.2013.00088/full
Contract Date	Jul 26, 2018

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Copyright Statement
© 2013 Tibber, Anderson, Bobin, Antonova, Seabright, Wright, Carlin, Shergill and Dakin. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.