Publication Date:
1997-06-13
Description:
Most natural actions are accomplished with a seamless combination of individual movements. Such coordination poses a problem: How does the motor system orchestrate multiple movements to produce a single goal-directed action? The results from current experiments suggest one possible solution. Oculomotor neurons in the superior colliculus of a primate responded to mismatches between eye and target positions, even when the animal made two different types of eye movements. This neuronal activity therefore does not appear to convey a command for a specific type of eye movement but instead encodes an error signal that could be used by multiple movements. The use of shared inputs is one possible strategy for ensuring that different movements share a common goal.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krauzlis, R J -- Basso, M A -- Wurtz, R H -- New York, N.Y. -- Science. 1997 Jun 13;276(5319):1693-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9180078" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Eye Movements/*physiology
;
Fixation, Ocular/physiology
;
Macaca mulatta
;
Motor Neurons/*physiology
;
Pursuit, Smooth/physiology
;
Saccades/physiology
;
Superior Colliculi/cytology/*physiology
;
Visual Pathways
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink
