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Activation of human primary visual cortex during visual recall: a magnetic resonance imaging study.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bihan, Denis Le Turner, Robert Zeffiro, Thomas A. Cuénod, C. A. Jezzard, Peter Bonnerot, V. |
| Copyright Year | 1993 |
| Abstract | The degree to which the process involved in visual perception and visual imagery share a common neuroanatomical substrate is unclear. Physiological evidence for localization of visual imagery early in the visual pathways would have important bearing on current theories of visual processing. A magnetic resonance imaging technique sensitive to regional changes in blood oxygenation was used to obtain functional activation maps in the human visual cortex. During recall of a visual stimulus, focal increases in signal related to changes in blood flow were detected in V1 and V2 cortex in five of seven subjects. These experiments show that the same areas of the early visual cortex that are excited by visual stimulation are also activated during mental representation of the same stimulus. Some of the processes used in topographically mapped cortical areas during visual perception may also be utilized during visual recall. |
| Starting Page | 235 |
| Ending Page | 245 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.pnas.org/content/90/24/11802.full.pdf |
| PubMed reference number | 8265629v1 |
| Volume Number | 90 |
| Issue Number | 24 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Area striata structure Cell Respiration Cerebral cortex Magnetic Resonance Imaging Optic Nerve Glioma, Childhood Photic Stimulation Vision Visual Pathways |
| Content Type | Text |
| Resource Type | Article |
