权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Physiological and Morphological study on the humidity-information processing in insect CNS

昆虫中枢神经系统湿度信息处理的生理形态学研究

基本信息

批准号：
62540561
负责人：
YOKOHARI Fumio
金额：
$ 1.28万
依托单位：
Fukuoka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

项目摘要

Though there have been a number of electrophysiological and morphological studies on insect hygroreceptors, there is no paper about properties on interneurons in the CNS of insects responding to numidity changes. We recorded electrical activities to humidity changes from interneurons in the deutocerebrum of Periplaneta and Apis using glass electrodes and stained intracellularly some of these interneurons. Periplaneta: Interneurons in the deutocerebrum could be classified into three groups on the basis of the stimulus-response relationships. 1. The activity of the first group increases with increases in relative humidity. 2. The activity of the second group increases with decreases in relative humidity. 3. The activity of the third group has a peak at intermediate relative humidity. These activities were recorded from interneurons which located in the restricted area (cetro-dorsal area in deutocerebrum); the activities of the first group were recorded dorsally in the area, those of the … More second were ventrally in the area, and those of the third were recorded in the vicinity of its central area. There were various kinds of interneurons time courses of activities of which were different each other; phasic-tonic, phasic, tonic, and inhibitory-excitatory (phasic and tonic) types etc. Apis: Interneurons could be classified into only two groups in the basis of the stimulus-response relationship, instead of 3 groups in Periplaneta. The activity of one group increases with increasing humidity and that of the other increases with decreasing humidity. There were many kinds of the interneurons the time courses of activites of which were similar to those in Periplaneta. Some interneurons could be stained intracellularly. These were classified morphologically into two types, local interneurons and projection interneurons. The local interneuron spreads its neurites within dorsal and ventral area of the deutocerebrum and has no axon. The projection neuron spreads its neurites within the restricted area (probably only one glomerulus) and has a long axon. Less

虽然对昆虫的湿感受器进行了大量的电生理和形态学研究，但关于昆虫中枢神经系统中中间神经元对湿度变化的响应特性还未见报道。我们记录电活动的湿度变化，从中脑的大蠊和蜜蜂使用玻璃电极和染色细胞内的一些这些interneurons。根据刺激-反应关系，中脑的中间神经元可分为三类。1.第一组的活性随着相对湿度的增加而增加。2.第二组的活性随着相对湿度的降低而增加。3.第三组的活性在中等相对湿度下有一个峰值。这些活动记录自位于限制区（中脑的cetro-dorsal区）的中间神经元，第一组的活动记录在该区域的背侧，第二组的活动记录在背侧。 ...更多信息第二种在腹侧，第三种在中心区附近。中间神经元的活动时程各不相同，有相位-紧张型、相位型、紧张型、兴奋-兴奋型等。蜜蜂：根据刺激-反应关系，中间神经元可分为两组，而非大蠊的3组。一组活性随湿度增加而增加，另一组随湿度降低而增加。中间神经元种类繁多，其活动时程与大蠊相似。部分中间神经元胞内染色。这些被分为两种类型的形态，局部中间神经元和投射中间神经元。局部中间神经元在中脑的背腹侧分布突起，无轴突。投射神经元在限制区域（可能只有一个肾小球）内散布其神经突，并具有长轴突。少