Interactions between gaze-evoked blinks and gaze shifts in monkeys.
Interactions between gaze-evoked blinks and gaze shifts in monkeys.
复制标题
凝视着诱人的眨眼与猴子的凝视转移之间的相互作用。
DOI：
10.1007/s00221-011-2937-z
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发表时间：
2012-02
影响因子：
2
通讯作者：
Gandhi, Neeraj J.
中科院分区：
文献类型：
--
作者：
Gandhi, Neeraj J.
关键词：
Rapid eyelid closure, or a blink, often accompanies head-restrained and head-unrestrained gaze shifts. This study examines the interactions between such gaze-evoked blinks and gaze shifts in monkeys. Blink probability increased with gaze amplitude and at a faster rate for head-unrestrained movements. Across animals, blink likelihood was inversely correlated with the average gaze velocity of large amplitude control movements. Gaze-evoked blinks induce robust perturbations in eye velocity. Peak and average velocities are reduced, duration is increased, but accuracy is preserved. The temporal features of the perturbation depend on factors such as the time of blink relative to gaze onset, inherent velocity kinematics of control movements, and perhaps initial eye-in-head positions. Although variable across animals, the initial effect is a reduction in eye velocity, followed by a reacceleration that yields two or more peaks in its waveform. Interestingly, head velocity is not attenuated; instead, it peaks slightly later and with a larger magnitude. Gaze latency is slightly reduced on trials with gaze-evoked blinks, although the effect was more variable during head-unrestrained movements, and no reduction in head latency was observed. Preliminary data also demonstrated a similar perturbation of gaze-evoked blinks during vertical saccades. The results are compared with previously reported effects of reflexive blinks (evoked by air-puff delivered to one eye or supra-orbital ridge stimulation) and discussed in terms of effects of blinks on saccadic suppression, neural correlates of the altered eye velocity signals, and implications on the hypothesis that the attenuation in eye velocity is produced by a head movement command.
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影响因子：
2.5
作者：
Freedman, EG;Sparks, DL
通讯作者：
Sparks, DL
影响因子：
2.5
作者：
Freedman, EG;Stanford, TR;Sparks, DL
通讯作者：
Sparks, DL
DOI：
10.1073/pnas.0911902107
发表时间：
2010-03-30
影响因子：
11.1
作者：
Corneil, Brian D.;Elsley, James K.;Cushing, Sharon L.
通讯作者：
Cushing, Sharon L.
影响因子：
2.5
作者：
Gandhi, Neeraj J.;Sparks, David L.
通讯作者：
Sparks, David L.
影响因子：
2
作者：
Anastasopoulos, Dimitri;Ziavra, Nausica;Bronstein, Adolfo
通讯作者：
Bronstein, Adolfo