期刊
ANNUAL REVIEW OF NEUROSCIENCE
卷 31, 期 -, 页码 317-338出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev.neuro.31.060407.125627
关键词
vision; saccadic eye movements; corollary discharge; efference copy; perception
资金
- Intramural NIH HHS [Z01 EY000109-28] Funding Source: Medline
- NEI NIH HHS [R01 EY017592, EY017592] Funding Source: Medline
- NATIONAL EYE INSTITUTE [R01EY017592, Z01EY000109] Funding Source: NIH RePORTER
Each movement we make activates our own sensory receptors, thus causing a problem for the brain: the spurious, movement-related sensations must be discriminated from the sensory inputs that really matter, those representing our environment. Here we consider circuits for solving this problem in the primate brain. Such circuits convey a copy of each motor command, known as a corollary discharge (CD), to brain regions that use sensory input. In the visual system, CD signals may help to produce a stable visual percept from the jumpy images resulting from our rapid eye movements. A candidate pathway for providing CD for vision ascends from the superior colliculus to the frontal cortex in the primate brain. This circuit conveys warning signals about impending eye movements that are used for planning subsequent movements and analyzing the visual world. Identifying this circuit has provided a model for studying CD in other primate sensory systems and may lead to a better understanding of motor and mental disorders.
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