婴儿眼动不对称性：2个月大婴儿在等亮度条件下颞侧-鼻侧不对称性反转。
Infant eye movement asymmetries: temporal-nasal asymmetry is reversed at isoluminance in 2-month-olds.
作者信息
Epelbaum M, Teller D Y
机构信息
Department of Psychology NI-25, University of Washington, Seattle 98195, USA.
出版信息
Vision Res. 1995 Jul;35(13):1889-95. doi: 10.1016/0042-6989(94)00272-n.
Tested monocularly with luminance-modulated stimuli, young infants classically show a directional asymmetry of eye movements: optokinetic nystagmus (OKN) and OKN-like eye movements are more reliably elicited by temporo-nasally- (T-N) than by naso-temporally- (N-T) directed stimuli. In the present experiment, 2-month-old infants were tested with isoluminant red-green gratings. A reverse asymmetry was found: at isoluminance, directionally appropriate eye movements were more readily elicited by N-T- than by T-N-directed stimuli. The results suggest the presence of a reverse asymmetry in the ensemble of direction-selective neurons that controls young infants' immature eye movements in response to isoluminant stimuli.
在使用亮度调制刺激进行单眼测试时，幼儿通常会表现出眼球运动的方向不对称：与鼻颞向（N-T）定向刺激相比，颞鼻向（T-N）定向刺激更可靠地引发视动性眼震（OKN）和类似OKN的眼球运动。在本实验中，对2个月大的婴儿进行了等亮度红绿光栅测试。发现了一种反向不对称：在等亮度条件下，鼻颞向定向刺激比颞鼻向定向刺激更容易引发方向合适的眼球运动。结果表明，在控制幼儿对等亮度刺激做出反应的不成熟眼球运动的方向选择性神经元集合中存在反向不对称。
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