Phonotactic steering and representation of directional information in the ascending auditory pathway of a cricket.
Phonotactic steering and representation of directional information in the ascending auditory pathway of a cricket.
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蟋蟀上升听觉通路中的语音定向和方向信息的表示。
DOI：
10.1152/jn.00737.2019
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发表时间：
2020
影响因子：
2.5
通讯作者：
Lv M
中科院分区：
文献类型：
--
作者：
Lv M
方向性听觉对于动物来说至关重要，它们依靠声音信号来定位配偶。我们专注于蟋蟀，以探索由上行听觉中间神经元AN 1转发到大脑的方向信息的可靠性，这对声定向行为至关重要。我们以3°为步长呈现了从-45 °到+45°的呼唤歌曲，并将女性在轨迹球上行走的声音定向转向与AN 1的方向反应进行了比较。40%的女性表现出良好的转向行为，并改变他们的行走方向时，扬声器通过身体的纵轴。左右侧AN 1反应之间的双侧潜伏期差异很小，可能不可靠的听觉转向。在锋电位计数方面，所有AN 1记录在大于±18°的角度下均呈现显著的双侧差异，但当额叶刺激偏离其长轴3°时，35%的记录显示出每次啁啾1-3个动作电位的平均显著差异。对于小角度，一些女性有一个非常相似的AN 1活动转发到大脑，但他们的转向行为的准确性有很大的不同。我们的研究结果表明，方向转向和响应强度的AN 1之间的相关性，特别是对于大角度。如果AN 1是提供方向信息的唯一来源，那么动物在小角度的可靠转向必须基于AN 1活性的微小双边差异。我们讨论这种双边的反应差异在小角度是否可以提供一个可靠的措施，产生听觉转向命令从大脑下降，模式识别是强度independent.NEW &值得注意的是，上行听觉中间神经元AN 1已牵连在板球听觉转向，但在小的声学刺激角度，它不提供可靠的方向信息。我们的结论是，无论是小的双边听觉活动差异的AN 1神经元的增强，以产生可靠的下降转向命令，或更有可能，定向听觉转向介导的胸部通路，如反应性转向假说所示。
Directional hearing is crucial for animals depending on acoustic signals to locate a mate. We focused on crickets to explore the reliability of directional information forwarded to the brain by the ascending auditory interneuron AN1, which is crucial for phonotactic behavior. We presented calling song from −45° to +45° in steps of 3° and compared the phonotactic steering of females walking on a trackball with the directional responses of AN1. Forty percent of females showed good steering behavior and changed their walking direction when the speaker passed the body’s longitudinal axis. The bilateral latency difference between right and left AN1 responses was small and may not be reliable for auditory steering. In respect to spike count, all AN1 recordings presented significant bilateral differences for angles larger than ±18°, yet 35% showed a mean significant difference of 1–3 action potentials per chirp when the frontal stimulus deviated by 3° from their length axis. For small angles, some females had a very similar AN1 activity forwarded to the brain, but the accuracy of their steering behavior was substantially different. Our results indicate a correlation between directional steering and the response strength of AN1, especially for large angles. The reliable steering of animals at small angles would have to be based on small bilateral differences of AN1 activity, if AN1 is the only source providing directional information. We discuss whether such bilateral response difference at small angles can provide a reliable measure to generate auditory steering commands descending from the brain, as pattern recognition is intensity independent.NEW & NOTEWORTHYThe ascending auditory interneuron AN1 has been implicated in cricket auditory steering, but at small acoustic stimulation angles, it does not provide reliable directional information. We conclude that either the small bilateral auditory activity differences of the AN1 neurons are enhanced to generate reliable descending steering commands or, more likely, directional auditory steering is mediated via a thoracic pathway, as indicated by the reactive steering hypothesis.
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影响因子：
2.5
作者：
Kostarakos, Konstantinos;Hedwig, Berthold
通讯作者：
Hedwig, Berthold
蟋蟀前胸节间声激活中间神经元的响应特性
DOI：
--
发表时间：
1987
期刊：
Journal of Comparative Physiology
影响因子：
--
作者：
G. Atkins;G. Pollack
通讯作者：
G. Pollack
使用封闭声场进行声刺激分析板球听觉系统
DOI：
--
发表时间：
1981
期刊：
Journal of Comparative Physiology
影响因子：
--
作者：
H. Kleindienst;U. Koch;D. Wohlers
通讯作者：
D. Wohlers
蟋蟀的声音定位
DOI：
10.1007/bf00199248
发表时间：
1994
期刊：
Journal of Comparative Physiology A
影响因子：
--
作者：
G. Horseman;F. Huber
通讯作者：
F. Huber
通过选择性光失活研究蟋蟀听觉中间神经元之间的突触连接
DOI：
10.1523/jneurosci.05-05-01283.1985
发表时间：
1985
期刊：
The Journal of Experimental Biology
影响因子：
--
作者：
A. Selverston;H. Kleindienst;F. Huber
通讯作者：
F. Huber