Stereoscopic vision in the absence of the lateral occipital cortex.
Both dorsal and ventral cortical visual streams contain neurons sensitive to binocular disparities, but the two streams may underlie different aspects of stereoscopic vision. Here we investigate stereopsis in the neurological patient D.F., whose ventral stream, specifically lateral occipital cortex,...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2010-09-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC2935377?pdf=render |
| _version_ | 1819268157245751296 |
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| author | Jenny C A Read Graeme P Phillipson Ignacio Serrano-Pedraza A David Milner Andrew J Parker |
| author_facet | Jenny C A Read Graeme P Phillipson Ignacio Serrano-Pedraza A David Milner Andrew J Parker |
| author_sort | Jenny C A Read |
| collection | DOAJ |
| description | Both dorsal and ventral cortical visual streams contain neurons sensitive to binocular disparities, but the two streams may underlie different aspects of stereoscopic vision. Here we investigate stereopsis in the neurological patient D.F., whose ventral stream, specifically lateral occipital cortex, has been damaged bilaterally, causing profound visual form agnosia. Despite her severe damage to cortical visual areas, we report that DF's stereo vision is strikingly unimpaired. She is better than many control observers at using binocular disparity to judge whether an isolated object appears near or far, and to resolve ambiguous structure-from-motion. DF is, however, poor at using relative disparity between features at different locations across the visual field. This may stem from a difficulty in identifying the surface boundaries where relative disparity is available. We suggest that the ventral processing stream may play a critical role in enabling healthy observers to extract fine depth information from relative disparities within one surface or between surfaces located in different parts of the visual field. |
| first_indexed | 2024-12-23T21:28:36Z |
| format | Article |
| id | doaj.art-40bb8ddc150e4a0d83b90cf4fe60199a |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-23T21:28:36Z |
| publishDate | 2010-09-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-40bb8ddc150e4a0d83b90cf4fe60199a2022-12-21T17:30:31ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-09-0159e1260810.1371/journal.pone.0012608Stereoscopic vision in the absence of the lateral occipital cortex.Jenny C A ReadGraeme P PhillipsonIgnacio Serrano-PedrazaA David MilnerAndrew J ParkerBoth dorsal and ventral cortical visual streams contain neurons sensitive to binocular disparities, but the two streams may underlie different aspects of stereoscopic vision. Here we investigate stereopsis in the neurological patient D.F., whose ventral stream, specifically lateral occipital cortex, has been damaged bilaterally, causing profound visual form agnosia. Despite her severe damage to cortical visual areas, we report that DF's stereo vision is strikingly unimpaired. She is better than many control observers at using binocular disparity to judge whether an isolated object appears near or far, and to resolve ambiguous structure-from-motion. DF is, however, poor at using relative disparity between features at different locations across the visual field. This may stem from a difficulty in identifying the surface boundaries where relative disparity is available. We suggest that the ventral processing stream may play a critical role in enabling healthy observers to extract fine depth information from relative disparities within one surface or between surfaces located in different parts of the visual field.http://europepmc.org/articles/PMC2935377?pdf=render |
| spellingShingle | Jenny C A Read Graeme P Phillipson Ignacio Serrano-Pedraza A David Milner Andrew J Parker Stereoscopic vision in the absence of the lateral occipital cortex. PLoS ONE |
| title | Stereoscopic vision in the absence of the lateral occipital cortex. |
| title_full | Stereoscopic vision in the absence of the lateral occipital cortex. |
| title_fullStr | Stereoscopic vision in the absence of the lateral occipital cortex. |
| title_full_unstemmed | Stereoscopic vision in the absence of the lateral occipital cortex. |
| title_short | Stereoscopic vision in the absence of the lateral occipital cortex. |
| title_sort | stereoscopic vision in the absence of the lateral occipital cortex |
| url | http://europepmc.org/articles/PMC2935377?pdf=render |
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