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On identifying magnocellular and parvocellular responses on the basis of contrast-response functions

Skottun, Bernt C. and Skoyles, John R. (2011) On identifying magnocellular and parvocellular responses on the basis of contrast-response functions. Schizophrenia Bulletin, 37 (1). pp. 23-26. ISSN 0586-7614

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Abstract

It has been proposed that magnocellular and parvocellular sensitivity in schizophrenic individuals can be assessed using steady-state visually evoked potentials (VEPs) to either low-contrast stimuli or stimuli whose contrast is modulated around a high contrast "pedestal" (Green MF, Butler PD, Chen Y, et al. Schizophr Bull. 2009;35:163-181). This suggestion faces 2 difficulties: (1) To use low-contrast stimuli to activate the magnocellular system is inconsistent with lesion studies that have shown that under many conditions, the parvocellular system responds to the lowest contrasts and (2) To rely on contrast-response relationships to identify magnocellular and parvocellular responses is difficult because other neurons exist in the visual system that have contrast-response relationships similar to those of magnocellular and parvocellular cells. © 2010 The Author.

Item Type: Article
Official URL: http://schizophreniabulletin.oxfordjournals.org/
Additional Information: © 2010 OUP
Library of Congress subject classification: Q Science > QR Microbiology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Sets: Research centres and groups > Centre for Philosophy of Natural and Social Science (CPNSS)
Rights: http://www.lse.ac.uk/library/usingTheLibrary/academicSupport/OA/depositYourResearch.aspx
Date Deposited: 30 Mar 2011 10:28
URL: http://eprints.lse.ac.uk/33511/

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