期刊
ANNUAL REVIEW OF NEUROSCIENCE, VOL 33
卷 33, 期 -, 页码 1-21出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-neuro-060909-152823
关键词
lateral intraparietal area; LIP; saccade; visual search; salience; vision
资金
- NEI NIH HHS [R21 EY020631, R21 EY017938, R01 EY014978, R01 EY019273, R01 EY017039, R24 EY015634] Funding Source: Medline
- NATIONAL EYE INSTITUTE [R21EY020631, R01EY017039, R01EY014978, R24EY015634, R21EY017938, R01EY019273] Funding Source: NIH RePORTER
For many years there has been a debate about the role of the parietal lobe in the generation of behavior. Does it generate movement plans (intention) or choose objects in the environment for further processing? To answer this, we focus on the lateral intraparietal area (LIP), an area that has been shown to play independent roles in target selection for saccades and the generation of visual attention. Based on results from a variety of tasks, we propose that LIP acts as a priority map in which objects are represented by activity proportional to their behavioral priority. We present evidence to show that the priority map combines bottom-up inputs like a rapid visual response with an array of top-down signals like a saccade plan. The spatial location representing the peak of the map is used by the oculomotor system to target saccades and by the visual system to guide visual attention.
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