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比较灵长类动物下丘脑中的眼动信号与听觉皮层中的增益样特性。

Comparison of gain-like properties of eye position signals in inferior colliculus versus auditory cortex of primates.

机构信息

Center for Cognitive Neuroscience, Duke University Durham, NC, USA.

出版信息

Front Integr Neurosci. 2010 Aug 20;4. doi: 10.3389/fnint.2010.00121. eCollection 2010.

DOI:10.3389/fnint.2010.00121
PMID:20838470
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2936885/
Abstract

We evaluated to what extent the influence of eye position in the auditory pathway of primates can be described as a gain field. We compared single unit activity in the inferior colliculus (IC), core auditory cortex (A1) and the caudomedial belt (CM) region of auditory cortex (AC) in primates, and found stronger evidence for gain field-like interactions in the IC than in AC. In the IC, eye position signals showed both multiplicative and additive interactions with auditory responses, whereas in AC the effects were not as well predicted by a gain field model.

摘要

我们评估了灵长类动物听觉通路上的眼位置影响在何种程度上可以被描述为增益场。我们比较了灵长类动物的下丘（IC）、核心听觉皮层（A1）和听觉皮层的尾侧中带状区（CM）的单个单位活动，发现 IC 中比 AC 中更有增益场样相互作用的证据。在 IC 中，眼位置信号与听觉反应表现出乘法和加法相互作用，而在 AC 中，增益场模型并不能很好地预测这些影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/5b12a0142401/fnint-04-00121-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/473d580a304e/fnint-04-00121-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/5b4ed4ae66b8/fnint-04-00121-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/1ed8350c7e90/fnint-04-00121-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/03f54840e2fd/fnint-04-00121-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/e996cc4a5419/fnint-04-00121-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/5b12a0142401/fnint-04-00121-g009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/ae06819aa779/fnint-04-00121-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/5b4ed4ae66b8/fnint-04-00121-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/1ed8350c7e90/fnint-04-00121-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/03f54840e2fd/fnint-04-00121-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/e996cc4a5419/fnint-04-00121-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc1f/2936885/5b12a0142401/fnint-04-00121-g009.jpg

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Motor-related signals in the intraparietal cortex encode locations in a hybrid, rather than eye-centered reference frame.顶内沟皮质中与运动相关的信号以混合而非以眼为中心的参考系对位置进行编码。
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A rate code for sound azimuth in monkey auditory cortex: implications for human neuroimaging studies.
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