CHROMATIC PROPERTIES OF IDENTIFIED INTERNEURONS IN THE OPTIC LOBES OF THE BEE
CHROMATIC PROPERTIES OF IDENTIFIED INTERNEURONS IN THE OPTIC LOBES OF THE BEE
复制标题
DOI：
10.1007/bf00657117
复制
发表时间：
1980-01-01
期刊：
影响因子：
--
通讯作者：
HERTEL, H
中科院分区：
文献类型：
--
作者：
HERTEL, H
使用细胞内记录和不同质量的光刺激研究蜜蜂髓质和小叶神经元的特性。细胞内注射染料可以检查电生理学研究的神经元的结构和位置。给出了不同编码机制的示例；还发现了过渡阶段。宽带神经元在相同强度范围内对不同波长有响应/强度曲线；对于开启和关闭反应，该范围内的强度绝对值可能不同。窄带装置仅对一小部分光谱表现出高灵敏度。最大灵敏度有时位于不同感光器的最大灵敏度之间。强度带神经元对小强度范围有反应，对邻近强度的光没有反应。颜色特异性机制在对不同颜色的测试光的拮抗反应中是明显的。在髓质神经元中，该反应成分是阶段性的，在小叶神经元中是强直性的。 1/3髓质神经元的感受野小于30°；小叶神经元的角度大于 30°。一些纤维表现出空间拮抗性：光在感受野的一部分引起兴奋，而在另一部分引起抑制。场地缺乏对立的中心-环绕结构。一些神经元对光刺激的运动敏感。在髓质中，它们有小的感受野；在小叶中具有宽阔的感受野。小叶偶尔会出现方向选择性。
The properties of bee medulla and lobula neurons were investigated using intracellular recordings and light stimuli of different qualities. The intracellular injection of dye permitted the examination of the structure and position of neurons studied electrophysiologically. Examples of different coding mechanisms are given; transitional stages were also found. Broad band neurons have response/intensity curves for different wavelengths in the same range of intensity; the absolute value of intensity for this range may be different for on and off reactions. Narrow band units show high sensitivity to only a small portion of the spectrum. The maximum sensitivity sometimes lies between the sensitivity maximum of different photoreceptors. Intensity band neurons react to a small intensity range and show no reaction to light of neighboring intensities. Color specific mechanisms are evident in antagonistic reactions to different colors of the test light. In medullar neurons this component of reaction was phasic, in lobular neurons tonic. Receptive fields of 1/3 of medulla neurons are smaller than 30.degree.; those of lobula neurons are greater than 30.degree.. Some fibers show spatial antagonism: light elicits excitation in one part of the receptive field and inhibition in the other. Fields lack antagonistic center-surround structure. Several neurons are sensitive to movement of a light stimulus. In the medulla these had small receptive fields; in the lobula wide receptive fields. Directional selectivity occasionally occurred in the lobula.