Structure and function of neural circuit related to gloss perception in the macaque inferior temporal cortex: a case report
Structure and function of neural circuit related to gloss perception in the macaque inferior temporal cortex: a case report
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DOI：
10.1007/s00429-021-02324-6
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发表时间：
2021-06-22
影响因子：
3.1
通讯作者：
Goda, Naokazu
中科院分区：
文献类型：
--
作者：
Komatsu, Hidehiko;Nishio, Akiko;Goda, Naokazu
猕猴的下颞叶皮质在物体的视觉识别中起着关键作用。在IT皮层中，通过连接专门用于共同视觉特征的子区域而形成的特征选择网络似乎是处理生物上重要的视觉特征的基本策略。光泽知觉在判断物体的材料和条件方面起着重要的作用，是一种具有生物学意义的视觉功能。在目前的研究中，我们试图确定在一只猴子的IT皮质中是否存在专门处理与光泽感知相关的信息的神经回路。在神经记录实验中，我们将逆行示踪剂注射到IT皮层的光泽选择亚区，在那里聚集了光泽选择神经元，并对其神经联系进行了解剖检查。我们观察到逆行标记的神经元密集聚集在IT皮质的后部和前部的多个位置。根据这一案例研究的结果，我们将讨论这样一种可能性，即与注射部位一起，具有密集标记神经元簇的部位在IT皮质中形成用于处理光泽信息的特征选择性神经回路。
The inferior temporal (IT) cortex of the macaque monkey plays a pivotal role in the visual recognition of objects. In the IT cortex, a feature-selective network formed by connecting subregions specialized for common visual features seems to be a basic strategy for processing biologically important visual features. Gloss perception plays an important role in the judgment of materials and conditions of objects and is a biologically significant visual function. In the present study, we attempted to determine whether a neural circuit specialized for processing information related to gloss perception exists in the IT cortex in one monkey. We injected retrograde tracer into a gloss-selective subregion in the IT cortex where gloss-selective neurons were clustered in the neural recording experiment, and anatomically examined its neural connections. We observed that retrogradely labeled neurons were densely accumulated in multiple locations in the posterior and anterior IT cortices. Based on the results of this case study, we will discuss the possibility that, together with the injection site, the sites with a dense cluster of labeled neurons form feature-selective neural circuits for the processing of gloss information in the IT cortex.