Stereopsis and magnocellular sensitivity in schizophrenia

Abstract

There is evidence to indicate that schizophrenic individuals, in addition to cognitive deficiencies, also suffer from visual deficits. These deficits, it has been proposed, are the result of a deficiency in the magnocellular portion of the early visual system. A number of approaches have been used in attempts to assess the sensitivity of the magnocellular system in individuals with schizophrenia. It has recently been proposed that magnocellular sensitivity can be tested by measuring stereo acuity, i.e. by measuring the accuracy with which visual depth can be detected based on differences in the retinal images in the two eyes. This suggestion was based on early claims which linked stereopsis, i.e. the visual perception of depth generated from differences in the two retinal images, to the magnocellular system. We here review more recent results which indicate that stereopsis and stereo acuity are more closely linked to the parvocellular system. It is concluded that stereo acuity is not an appropriate test for assessing magnocellular sensitivity. The present considerations undermine the claim that magnocellular deficits are linked to schizophrenia

Links

PhilArchive



    Upload a copy of this work     Papers currently archived: 90,616

External links

Setup an account with your affiliations in order to access resources via your University's proxy server

Through your library

  • Only published works are available at libraries.

Similar books and articles

The role of executive control in saccade generation.Diane C. Gooding - 1999 - Behavioral and Brain Sciences 22 (4):686-687.
Sensitivity, Safety, and Closure.Sven Bernecker - 2012 - Acta Analytica 27 (4):367-381.

Analytics

Added to PP
2010-07-25

Downloads
7 (#1,201,537)

6 months
1 (#1,042,085)

Historical graph of downloads
How can I increase my downloads?

Citations of this work

No citations found.

Add more citations

References found in this work

No references found.

Add more references