Fixational Eye Movement Correction of Blink-Induced Gaze Position Errors

被引:33
作者
Costela, Francisco M. [1 ,2 ]
Otero-Millan, Jorge [1 ,3 ]
McCamy, Michael B. [1 ]
Macknik, Stephen L. [1 ,4 ]
Troncoso, Xoana G. [1 ,5 ]
Jazi, Ali Najafian [1 ]
Crook, Sharon M. [6 ,7 ]
Martinez-Conde, Susana [1 ,4 ]
机构
[1] Barrow Neurol Inst, Phoenix, AZ 85013 USA
[2] Arizona State Univ, Interdisciplinary Grad Program Neurosci, Phoenix, AZ USA
[3] Johns Hopkins Univ, Dept Neurol, Baltimore, MD 21218 USA
[4] Suny Downstate Med Ctr, Dept Ophthalmol, Brooklyn, NY 11203 USA
[5] UNIC, UPR CNRS 3293, Unite Neurosci Informat & Complex, Gif Sur Yvette, France
[6] Arizona State Univ, Sch Math & Stat Sci, Phoenix, AZ USA
[7] Arizona State Univ, Sch Life Sci, Phoenix, AZ USA
关键词
SEARCH COIL; MICROSACCADES; SACCADE; ROTATION; DRIFTS; FOVEAL; MOTION; MONKEY;
D O I
10.1371/journal.pone.0110889
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Our eyes move continuously. Even when we attempt to fix our gaze, we produce "fixational'' eye movements including microsaccades, drift and tremor. The potential role of microsaccades versus drifts in the control of eye position has been debated for decades and remains in question today. Here we set out to determine the corrective functions of microsaccades and drifts on gaze-position errors due to blinks in non-human primates (Macaca mulatta) and humans. Our results show that blinks contribute to the instability of gaze during fixation, and that microsaccades, but not drifts, correct fixation errors introduced by blinks. These findings provide new insights about eye position control during fixation, and indicate a more general role of microsaccades in fixation correction than thought previously.
引用
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页数:8
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