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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >The cellular basis for parallel neural transmission of a high-frequency stimulus and its low-frequency envelope
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The cellular basis for parallel neural transmission of a high-frequency stimulus and its low-frequency envelope

机译：高频刺激及其低频包络的并行神经传递的细胞基础

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摘要

Sensory stimuli often have rich temporal and spatial structure. One class of stimuli that are common to visual and auditory systems and, as we show, the electrosensory system are signals that contain power in a narrow range of temporal (or spatial) frequencies. Characteristic of this class of signals is a slower variation in their amplitude, otherwise known as an envelope. There is evidence suggesting that, in the visual cortex, both narrowband stimuli and their envelopes are coded for in separate and parallel streams. The implementation of this parallel transmission is not well understood at the cellular level. We have identified the cellular basis for the parallel transmission of signal and envelope in the electrosensory system: a two-cell network consisting of an interneuron connected to a pyramidal cell by means of a slow synapse. This circuit could, in principle, be implemented in the auditory or visual cortex by the previously identified biophysics of cortical interneurons.
机译：感觉刺激通常具有丰富的时间和空间结构。视觉和听觉系统常见的一类刺激，正如我们所展示的，电感应系统是一种信号，它们在较小的时间（或空间）频率范围内包含能量。这类信号的特征是其幅度变化较慢，否则称为包络。有证据表明，在视觉皮层中，窄带刺激及其包络都在单独和平行的流中编码。这种并行传输的实现在蜂窝级别还不是很了解。我们已经确定了在电传感系统中信号和包络并行传输的细胞基础：一个由一个中神经元组成的两细胞网络，该神经元通过慢突触连接到锥体细胞。原则上，该电路可以通过先前确定的皮层神经元的生物物理学在听觉或视觉皮层中实现。

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