Abstract：
:Studies undertaken in head-restrained animals have long implicated the omnipause neurons (OPNs) in the initiation of saccadic eye movements. These inhibitory neurons discharge tonically but cease firing just before and during saccades in all directions. By recording from OPNs in alert behaving head-unrestrained cats, we have demonstrated that the activity of these cells is related to the displacement of the visual axis in space (gaze), which is the sum of the eye movement relative to the head and head movement relative to space. OPNs were found to exhibit a complete cessation of discharge for a period equivalent to the duration of the gaze shift, and not to the duration of either the rapid eye movement or the head movement components. In large gaze shifts, OPNs were silent even when the eye was immobile in the orbit, as long as the gaze shift was not completed. The results of this study show that OPNs are controlled by neural elements that take into account the actual position of the visual axis relative to its final desired position irrespective of the trajectory of the eye in the orbit or of whether the head is moving or not.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Paré M,Guitton Ddoi
10.1007/BF00232210subject
Has Abstractpub_date
1990-01-01 00:00:00pages
210-4issue
1eissn
0014-4819issn
1432-1106journal_volume
83pub_type
杂志文章abstract：:Quantitative analysis of dendritic orientation in rapid Golgi sections of the lateral geniculate nucleus of Old World monkeys was performed with the help of a computer-microscope and a tree-analysing program. The orientation of intermediate and terminal dendritic segments of parvocellular and magnocellular multipolar ...
journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章,评审
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pub_type： 杂志文章
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更新日期：1993-01-01 00:00:00
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更新日期：1991-01-01 00:00:00
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更新日期：1992-01-01 00:00:00
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更新日期：2007-08-01 00:00:00
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pub_type： 杂志文章,评审
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更新日期：1995-01-01 00:00:00
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pub_type： 临床试验,杂志文章
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更新日期：1997-07-01 00:00:00
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更新日期：2017-05-01 00:00:00
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更新日期：2002-11-01 00:00:00
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更新日期：2007-07-01 00:00:00
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pub_type： 临床试验,杂志文章
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更新日期：1995-01-01 00:00:00
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