[根据视觉空间复杂性具有不同功能不对称特征的人类的扫视潜伏期]

[Saccadic latency in human with different profiles of functional asymmetry depending on visual space complicity].

作者信息

Kolesnikova O V, Tereshchenko L V, Latanov A V, Shul'govskiĭ V V

出版信息

Zh Vyssh Nerv Deiat Im I P Pavlova. 2009 Sep-Oct;59(5):547-56.

PMID:19947530

Abstract

The latencies of visually-guided saccades of 47 right-handed subjects (32 with right leading and 15 with left leading eyes) were studied. Stimulation paradigm was spatially bidimentional, and stimuli were presented along horizontal, vertical and oblique axes. Three levels of visual space complicity and two traditional single-step GAP and OVERLAP temporal paradigms were used. A half of the left-leading-eye subjects had shorter latencies of the saccades directed towards the left (ipsilateral) hemifield, whereas only one fifth of the subjects demonstrated shorter latencies ofsaccades towards the right (contralateral) hemifield (53% vs 20%). Only one fourth of right-leading-eye subjects had shorter latencies of saccades towards the inpsilateral hemifield and one fifth of these subjects had shorter latencies of the saccades towards the contralateral hemifield (20% vs 25%). The interrelation between eye dominance and spatial asymmetry of saccadic latencies is revealed.

摘要

对47名右利手受试者（32名右眼主导和15名左眼主导）的视觉引导扫视潜伏期进行了研究。刺激范式为空间二维，刺激沿水平、垂直和斜轴呈现。采用了三种视觉空间复杂度水平和两种传统的单步GAP和OVERLAP时间范式。一半的左眼主导受试者向左（同侧）半视野的扫视潜伏期较短，而只有五分之一的受试者向右（对侧）半视野的扫视潜伏期较短（53%对20%）。只有四分之一的右眼主导受试者向同侧半视野的扫视潜伏期较短，其中五分之一的受试者向对侧半视野的扫视潜伏期较短（20%对25%）。揭示了眼优势与扫视潜伏期空间不对称之间的相互关系。