Population coding is essential for rapid information processing in the moth antennal lobe
Population coding is essential for rapid information processing in the moth antennal lobe
复制标题
群体编码对于蛾触角叶的快速信息处理至关重要
DOI：
10.1016/j.brainres.2013.05.007
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发表时间：
2013
期刊：
影响因子：
2.9
通讯作者：
P. Lansky
中科院分区：
文献类型：
--
作者：
R Kobayashi;S. Namiki;R. Kanzaki;K. Kitano;I. Nishikawa;P. Lansky
我们研究了气味信息是如何通过蛾触角叶(AL)的神经元传递的。这些神经元被三种不同的气味反复刺激，并在细胞内记录其活动。首先，分析了单个神经元的响应特性。神经元对气味表现出高度可靠的反应，43%的AL神经元对两种或三种气味有反应。对气味刺激作出反应的放电频率在蛾AL神经元中的群体分布相对较广，这在昆虫中是一致的。其次，我们尝试使用最大似然法从记录的神经元的活动中解码气味标识。译码性能随着神经元数目的增加而迅速提高。值得注意的是，神经群体大小的增加导致信息传递更快，并延长了保留气味信息的持续时间。综上所述，AL神经元能够可靠地编码气味信息，群体编码可以将气味信息传递到嗅觉中枢。群体编码可以使AL编码和传输嗅觉信息的速度比行为实验中显示的辨别潜伏期更快。这篇文章是题为《神经编码2012》的特刊的一部分。
We investigated how odorant information is transmitted by neurons in the moth antennal lobe (AL). The neurons were repeatedly stimulated by three different odorants and their activity was intracellularly recorded. First, the response properties of single neurons were analyzed. The neurons exhibited highly reliable responses to the odorants and 43% of AL neurons responded to two or three odorants. The population distribution of firing rates in response to odorant stimulation was relatively broad in moth AL neurons, which is consistent across insects. Second, we attempted to decode the odorant identity from the activity of the recorded neurons using the maximum likelihood method. The decoding performance rapidly improves with increasing the number of neurons. Notably, an increase in the size of neural population results in faster transfer of information and increased the duration to retain odorant information. In conclusion, the AL neurons encode odorant information reliably and the population coding can transmit odorant information to olfactory centers. Population coding allows AL to encode and transmit olfactory information faster than the discrimination latency demonstrated in behavioral experiments.This article is part of a Special Issue entitledNeural Coding2012.