Kirk M D, Prugh J I, Glantz R M
J Neurobiol. 1983 Nov;14(6):473-80. doi: 10.1002/neu.480140608.
We have identified a cluster of neurosecretory cells in the crayfish eyestalk that possess dendrites in the second optic neuropil (Medulla) and project axons to the first optic neuropil (Lamina). Illumination of the ipsilateral retina produces a synaptic inhibition of these cells that is mimicked by iontophoresis of gamma-aminobutyric acid within the medullary neuropil. The neurosecretory nature of the cells, the efferent projection of their axons, and the strong inhibition of their spiking activity upon retinal illumination suggest that they may be involved in the feedback control of dark adaptation and/or circadian changes in visual sensitivity.
我们在小龙虾眼柄中识别出了一群神经分泌细胞，这些细胞在第二视神经纤维层（髓质）中具有树突，并将轴突投射到第一视神经纤维层（神经纤维层）。同侧视网膜的光照会对这些细胞产生突触抑制，而在髓质神经纤维层内通过离子电泳施加γ-氨基丁酸可模拟这种抑制。这些细胞的神经分泌特性、其轴突的传出投射以及视网膜光照对其放电活动的强烈抑制表明，它们可能参与了暗适应的反馈控制和/或视觉敏感性的昼夜变化。
