ISSN 0439-755X
CN 11-1911/B
主办:中国心理学会
   中国科学院心理研究所
出版:科学出版社

心理学报 ›› 2018, Vol. 50 ›› Issue (2): 158-167.doi: 10.3724/SP.J.1041.2018.00158

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 初级视觉皮层在注意振荡中的作用

 陈艾睿1;  王爱君1;  王天琪1;  唐晓雨2;  张 明1   

  1.   (1苏州大学心理学系, 心理与行为科学研究中心, 苏州 215123) (2辽宁师范大学心理学院, 儿童青少年健康人格评定与培养协同创新中心, 大连 116029)
  • 收稿日期:2017-06-24 出版日期:2018-02-25 发布日期:2017-12-26
  • 通讯作者: 张 明, E-mail: psyzm@suda.edu.cn; 唐晓雨, E-mail: tangyu-2006@163.com
  • 基金资助:
     国家自然科学基金(31371025, 31600882, 31700939)、中国博士后基金面上项目(2017M611888)、江苏省基础研究计划(BK20170333)资助。

 The primary visual cortex modulates attention oscillation

CHEN Airui1; WANG Aijun1; WANG Tianqi1; TANG Xiaoyu2; ZHANG Ming1   

  1.  (1 Department of Psychology, Research Center for Psychology and Behavioral Sciences, Suzhou 215000, China) (2 School of Psychology, Liaoning Collaborative Innovation Center of Children and Adolescents Healthy Personality Assessment and Cultivation, Dalian 116029, China)
  • Received:2017-06-24 Online:2018-02-25 Published:2017-12-26
  • Contact: ZHANG Ming, E-mail: psyzm@suda.edu.cn; TANG Xiaoyu, E-mail: tangyu-2006@163.com
  • Supported by:
     

摘要:  注意离散性是注意间歇性地采集外界信息的特性, 这种特性在行为中的表现被称为注意振荡。尽管有研究使用经典的线索靶子范式和视觉搜索范式发现行为数据中存在注意振荡, 证明了注意是离散的, 但其相应的神经机制, 即注意离散性与哪些脑区有关, 尚不明确。研究采用高时间分辨率的线索靶子范式和双眼分视技术, 基于人眼视觉通路的解剖学特性, 比较了线索靶子出现在双眼(实验1)、同眼和异眼(实验2)条件下的注意振荡, 考察初级视觉皮层对注意振荡的影响。结果发现:1)双眼分视会对注意振荡发生的频段产生影响, 非双眼分视条件下, 注意振荡出现在低频(2 Hz和8 Hz)。而双眼分视条件下, 注意振荡则出现在更高的频段(12.5 Hz)。2)无论线索靶子出现在同眼还是异眼, 注意振荡的频段无显著差异。结果表明V1区双眼视觉通路或者更高级的视觉区可能参与注意振荡, 为探明注意振荡的神经机制提供了重要的行为学证据。

关键词: 注意振荡, 初级视觉皮层, 双眼分视, 高时间分辨率, 线索靶子范式

Abstract:  It has been well documented that the spotlight of attention is intrinsically rhythmic, which discretely samples a single or multiple objects. Adopting high resolution behavioral approach, attention oscillation has been revealed. However, neural mechanism of attention oscillation remains poorly understood. In the present study, basing on functional anatomy of the primary visual cortex, we aimed to investigate the role of primary visual cortex (V1) in attention oscillation, by using a modified high temporal resolution cue-target paradigm in a 4AFC task. In the present study, behavioral oscillations in visual attention under ordinary (binocular; not dichoptic) viewing condition (exp. 1) and binocular dichoptic (exp. 2) condition were examined. In experiment 1, 16 paid participants were asked to detect target at either the previously cued (valid condition) or uncued location (invalid condition). The cue-target SOA varied from 0.1 s to 1.08 s in steps of 20 ms. Performances were evaluated in a 4AFC task. If they saw target, they were instructed to judge the location of the target (1 for target on the upper left; 2 for upper right; 4 for lower left; 5 for lower right) on the keypad. While, 16 paid participants were recruited to detect target at either cued or uncued locations under binocular dichoptic condition. Target could occur in the same or different eye of cue stimuli. Amplitude of target contrast decrement was determined with QUEST procedure before cue-target experiment. Except that no cue stimuli were presented, threshold procedure was identical to the cue-target experiment procedure. Results showed that when grating locations were presented under ordinary viewing condition, a theta rhythm was visible. While targets were presented in the same or different eye under binocular dichoptic condition, attention oscillation was clearly seen at 12.5 Hz with antiphase relationship between cued and uncued conditions. The findings under ordinary viewing condition are in general consistent with previous studies. While, under binocular dichoptic condition, attention oscillation increased to a higher frequency. This study indicates that attention oscillation may occur at or beyond primary visual cortex where binocular integration begins.

Key words: attention oscillation, V1, binocular dichoptic, high temporal resolution, cue-target paradigm

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