Information tuning of neurons in middle temporal area of rhesus monkeys
Bing Zhang1; Yifeng Zhou1; Zhen Liang2
2017-07
会议名称2017年第二届曲阜视觉科学会议
会议日期2017.7.1
会议地点曲阜
摘要

PURPOSE:Neurons in macaque middle temporal visual area (MT) show a diversity of direction tuning properties, exhibiting a broad distribution of tuning width, baseline activity, peak response, and circular variance (CV). Previous studies of the direction discrimination power of neurons in V1 focused on resolving two nearby orientations close to the psychophysical threshold of direction discrimination.
METHODS: Here, we developed the information tuning curve, that measures the discrimination power of cells as a function of the direction difference, δθ, of the two stimuli, to study how the tuning features affect the discrimination of neurons. This tuning curve also represents the mutual information between the neuronal responses and the stimulus direction.
RESULTS: The shape of information tuning curve is similar to the direction-selective (DS) tuning curve with one peak. It also enables us to compare the discrimination capability of neurons quantitatively. Studies of discrimination performance of neurons in MT indicates that Chernoff distance (D_C) decreases monotonically as relative baseline increases and has a maximum as the tuning width (σ) increases.
CONCLUSIONS: The information tuning curve measures the discrimination power of cells as a function of the direction difference. δθ, of the two stimuli. And most of the neuronal population exhibits favorable tuning properties for relatively large δθ.

关键词middle temporal visual area rhesus monkey direction selectivity Chernoff distance
语种英语
文献类型会议论文
条目标识符http://ir.psych.ac.cn/handle/311026/22100
专题心理所主办学术会议_2017年第二届曲阜视觉科学会议_会议摘要
作者单位1.CAS Key Laboratory of Brain Function and Disease, and School of Life Sciences, University of Science and Technology of China
2.Department of Bio-Medical Engineering, School of Life Science, Anhui Medical University
推荐引用方式
GB/T 7714
Bing Zhang,Yifeng Zhou,Zhen Liang. Information tuning of neurons in middle temporal area of rhesus monkeys[C],2017.
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