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 | |||||||||
| Keywords | No keywords specified (fix it) | |||||||||
| Categories | No categories specified (fix it) | |||||||||
| Options |
|
|||||||||
Download options| PhilPapers Archive |
Upload a copy of this paper Check publisher's policy on self-archival Papers currently archived: 5,865 |
| External links |
  Try with proxy. Try with proxy. |
| Through your library | Only published papers are available at libraries |
Similar books and articlesGregory A. Light (2004). Probing Cortico-Cortical Interactions That Underlie the Multiple Sensory, Cognitive, and Everyday Functional Deficits in Schizophrenia. Behavioral and Brain Sciences 27 (6):799-799.
Sven Bernecker (2012). Sensitivity, Safety, and Closure. Acta Analytica 27 (4):367-381.
Diane C. Gooding (1999). The Role of Executive Control in Saccade Generation. Behavioral and Brain Sciences 22 (4):686-687.
Duje Tadin, Peiyan Wong, Michael W. Mebane, Michael J. Berkowitz, Hollister Trott & Sohee Park (2005). Believing is Seeing in Schizophrenia: The Role of Top-Down Processing. Behavioral and Brain Sciences 28 (6):775-775.
Diego Fernandez-Duque & Ian Thornton (2000). Change Detection Without Awareness: Do Explicit Reports Underestimate the Representation of Change in the Visual System? Visual Cognition 7 (1):323-344.
Louis A. Sass & Peter J. Uhlhaas (2003). Phenomenology, Context, and Self-Experience in Schizophrenia. Behavioral and Brain Sciences 26 (1):104-105.
Diane C. Gooding & Jacqueline G. Braun (2003). Cognitive Coordination Deficits: A Necessary but Not Sufficient Factor in the Development of Schizophrenia. Behavioral and Brain Sciences 26 (1):89-90.
Luiz Carlos L. Silveira (2004). Parallel Visual Pathways From the Retina to the Visual Cortex – How Do They Fit? Behavioral and Brain Sciences 27 (1):50-51.
Analytics
Monthly downloads
Sorry, there are not enough data points to plot this chart.
|
Added to index2010-07-25Total downloads2 ( #234,562 of 556,772 )Recent downloads (6 months)0How can I increase my downloads? |
My notes
Discussion
