Sound processing in the cricket brain: evidence for a pulse duration filter.
Sound processing in the cricket brain: evidence for a pulse duration filter.
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DOI：
10.1152/jn.00252.2023
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发表时间：
2023-10-01
影响因子：
2.5
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中科院分区：
文献类型：
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雌性蟋蟀的听觉系统使它们能够识别和接近特定物种的雄性叫声，这种叫声由声音脉冲和静默间隔定义。听觉脑神经元形成一个延迟线和符合探测器网络，调节到男性歌曲的脉冲周期。我们分析了脉冲持续时间的变化对听觉神经元和网络的行为和反应的影响。我们证实，上升神经元AN1和局部神经元LN2复制了歌曲的时间结构。在持续的长声脉冲期间，延迟线神经元LN5表现出额外的反弹反应，而符合探测器神经元LN3可以产生额外的活动突发，这表明这些可能是由网络的内在振荡驱动的。此外，特征检测神经元LN4的反应是由抑制性和兴奋性突触输入的组合塑造的，LN4甚至对具有短去极化和棘波爆发的长声音脉冲也有反应，就像对自然持续时间的声音脉冲一样。LN4的这一响应特性表明模式识别网络的选择性听觉脉冲持续时间过滤机制，其被调谐到自然脉冲的持续时间。将音向性行为的调节与局部听觉脑神经元对相同测试模式的调节进行比较，我们发现没有证据表明音向性行为的调制反映在特征检测器神经元的水平上。这反而表明，转向不吸引人的脉搏模式是在胸腔水平组织的。报道了板球延迟线和符合探测器网络的新的和值得注意的脉冲周期选择性，而从行为测试中脉冲持续时间的选择性是明显的。持续时间增加的脉冲在模式识别神经元中引发反应，这与行为反应不平行，表明有额外的处理机制。长的声音脉冲会引发节律性反弹活动和额外的脉冲串，而特征检测器神经元则显示一个脉冲持续时间过滤器，扩大了我们对模式识别过程的理解。
The auditory system of female crickets allows them to specifically recognize and approach the species-specific male calling song, defined by sound pulses and silent intervals. Auditory brain neurons form a delay-line and coincidence detector network tuned to the pulse period of the male song. We analyzed the impact of changes in pulse duration on the behavior and the responses of the auditory neurons and the network. We confirm that the ascending neuron AN1 and the local neuron LN2 copy the temporal structure of the song. During ongoing long sound pulses, the delay-line neuron LN5 shows additional rebound responses and the coincidence detector neuron LN3 can generate additional bursts of activity, indicating that these may be driven by intrinsic oscillations of the network. Moreover, the response of the feature detector neuron LN4 is shaped by a combination of inhibitory and excitatory synaptic inputs, and LN4 responds even to long sound pulses with a short depolarization and burst of spikes, like to a sound pulse of natural duration. This response property of LN4 indicates a selective auditory pulse duration filter mechanism of the pattern recognition network, which is tuned to the duration of natural pulses. Comparing the tuning of the phonotactic behavior with the tuning of the local auditory brain neurons to the same test patterns, we find no evidence that a modulation of the phonotactic behavior is reflected at the level of the feature detector neurons. This rather suggests that steering to nonattractive pulse patterns is organized at the thoracic level. NEW & NOTEWORTHY Pulse period selectivity has been reported for the cricket delay-line and coincidence detector network, whereas pulse duration selectivity is evident from behavioral tests. Pulses of increasing duration elicit responses in the pattern recognition neurons, which do not parallel the behavioral responses and indicate additional processing mechanisms. Long sound pulses elicit rhythmic rebound activity and additional bursts, whereas the feature detector neuron reveals a pulse duration filter, expanding our understanding of the pattern recognition process.
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影响因子：
5.3
作者：
Edwards, Christofer J.;Leary, Christopher J.;Rose, Gary J.
通讯作者：
Rose, Gary J.
DOI：
10.1098/rspb.2017.0745
发表时间：
2017-05-31
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Hedwig B;Sarmiento-Ponce EJ
通讯作者：
Sarmiento-Ponce EJ
影响因子：
3.3
作者：
ALEXANDER, RD
通讯作者：
ALEXANDER, RD
影响因子：
2.8
作者：
Hedwig, B;Poulet, JEA
通讯作者：
Poulet, JEA
DOI：
10.1007/s00359-022-01577-8
发表时间：
2022-11
期刊：
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology
影响因子：
--
作者：
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