Response properties of prothoracic, interganglionic, sound-activated interneurons in the cricketTeleogryllus oceanicus
Response properties of prothoracic, interganglionic, sound-activated interneurons in the cricketTeleogryllus oceanicus
复制标题
蟋蟀前胸节间声激活中间神经元的响应特性
DOI：
--
复制
发表时间：
1987
期刊：
影响因子：
--
通讯作者：
G. Pollack
中科院分区：
文献类型：
--
作者：
G. Atkins;G. Pollack
1.描述了海洋蟋蟀（Teleogryllus oceanicus）前胸中间神经元的反应特性。其中两个（DN 1和TN 1）以前在另一个物种中进行过研究（Wohlers和Huber 1982）;其余七个在这里首次描述。其中四个神经元（DN 1-DN 4）具有向前胸神经节后方伸出的轴突，而其他神经元（TN 1-TN 5）具有向后和向前伸出的轴突。没有一个中间神经元的调谐是尖锐的，但都显示出一定的频率选择性。五个是最好的兴奋高频音调和显示最大的反应范围18-40千赫（图1）。其他的主要是对3-12 kHz范围内的低频音调做出响应（图1）。所有九个神经元都在前胸神经节中接收听觉输入（图1和图2）。2-10).3.每个中间神经元都是方向敏感的; TN 2、TN 3和TN 5对来自胞体同侧的声音最敏感，而其他中间神经元对来自胞体对侧的声音最敏感（图1A和1B）。2-10).4.四个中间神经元能够编码模型呼叫歌曲的至少一些时间特征（图11，表1）。然而，只有一个神经元对连续刺激有持续的反应;其余的神经元表现出严重的递减反应（图12，表1）。2-10）。
Summary1.The response properties of nine prothoracic interneurons in the cricketTeleogryllus oceanicus are described. Two of these (DN1 and TN1) have been studied previously in another species (Wohlers and Huber 1982); the remaining seven are described here for the first time. Four of the neurons (DN1–DN4) have an axon that projects out of the prothoracic ganglion posteriorly, while the others (TN1–TN5) have axons that project posteriorly and anteriorly.2. None of the interneurons are sharply tuned, but all show some frequency selectivity. Five are best excited by high frequency tones and show maximum responsiveness in the range 18–40 kHz (Fig. 1). The others are primarily responsive to low frequency tones in the range 3–12 kHz (Fig. 1). All nine neurons receive auditory input in the prothoracic ganglion (Figs. 2–10).3.Each of the interneurons is direction-sensitive; TN2, TN3 and TN5 are most sensitive to sound played from the soma-ipsilateral side while the others are most sensitive to sound from the soma-contralateral side (Figs. 2–10).4.Four of the interneurons are able to encode at least some of the temporal features of a model calling song (Fig. 11, Table 1). Only one, however, has a maintained response to continual stimulation; the rest exhibit severely decrementing responses (Fig. 12, Table 1).5.In addition to responding to sound, some of the neurons respond to wind and/or light (Figs. 2–10).