A neural mechanism for microsaccade generation in the primate superior colliculus.
A neural mechanism for microsaccade generation in the primate superior colliculus.
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DOI:
10.1126/science.1166112
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发表时间:
2009-02-13
期刊:
影响因子:
--
通讯作者:
Krauzlis RJ
中科院分区:
文献类型:
--
作者:
Hafed ZM;Goffart L;Krauzlis RJ
During fixation, the eyes are not still, but often exhibit microsaccadic movements. The function of microsaccades is controversial, largely because the neural mechanisms responsible for their generation are unknown. Here we show that the superior colliculus (SC), a retinotopically organized structure involved in voluntary-saccade target selection, plays a causal role in microsaccade generation. Neurons in the foveal portion of the SC increase their activity before and during microsaccades with sizes of only a few minutes of arc, and exhibit selectivity for the direction and amplitude of these movements. Reversible inactivation of these neurons significantly reduces microsaccade rate without otherwise compromising fixation. These results, coupled with computational modeling of SC activity, demonstrate that microsaccades are controlled by the SC, and explain the link between microsaccades and visual attention.
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影响因子:
5.3
作者:
Hafed, Ziad M.;Goffart, Laurent;Krauzlis, Richard J.
通讯作者:
Krauzlis, Richard J.
影响因子:
1.9
作者:
Snodderly, DM;Kagan, I;Gur, M
通讯作者:
Gur, M
DOI:
10.3758/bf03206795
发表时间:
1995-08-01
期刊:
PERCEPTION & PSYCHOPHYSICS
影响因子:
--
作者:
KINGSTONE, A;FENDRICH, R;REUTERLORENZ, PA
通讯作者:
REUTERLORENZ, PA
影响因子:
--
作者:
CORNSWEET, TN
通讯作者:
CORNSWEET, TN
影响因子:
5.5
作者:
BARLOW, HB
通讯作者:
BARLOW, HB