Publication Date:
1999-05-15
Description:
At any given instant, multiple potential targets for saccades are present in the visual world, implying that a "selection process" within the brain determines the target of the next eye movement. Some superior colliculus (SC) neurons begin discharging seconds before saccade initiation, suggesting involvement in target selection or, alternatively, in postselectional saccade preparation. SC neurons were recorded in monkeys who selected saccade targets on the basis of motion direction in a visual display. Some neurons carried a direction-selective visual signal, consistent with a role in target selection in this task, whereas other SC neurons appeared to be more involved in postselection specification of saccade parameters.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Horwitz, G D -- Newsome, W T -- 5T32NH17047-17/NH/NIH HHS/ -- New York, N.Y. -- Science. 1999 May 14;284(5417):1158-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Neurobiology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10325224" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Macaca mulatta
;
Motion Perception/*physiology
;
Neurons/*physiology
;
Photic Stimulation
;
Saccades/*physiology
;
Superior Colliculi/cytology/*physiology
;
Visual Perception/*physiology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
