EXTRARETINAL LIGHT PERCEPTION IN SPARROW .3. EYES DO NOT PARTICIPATE IN PHOTOPERIODIC PHOTORECEPTION
EXTRARETINAL LIGHT PERCEPTION IN SPARROW .3. EYES DO NOT PARTICIPATE IN PHOTOPERIODIC PHOTORECEPTION
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DOI：
10.1073/pnas.67.1.320
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发表时间：
1970-01-01
影响因子：
11.1
通讯作者：
UNDERWOOD, H
中科院分区：
文献类型：
--
作者：
MENAKER, M;ROBERTS, R;UNDERWOOD, H
光周期控制麻雀睾丸生长完全是由大脑中的视网膜外光感受器介导的。眼睛不参与光周期性的显著光感受。切除松果体既不影响对光的反应，也不影响复发的过程。到达视网膜的光强度和到达视网膜外光感受器的光强度独立地变化。这项技术将使研究鸟类大脑光感受能力成为可能，这些鸟类不能忍受致盲。在解释生殖功能被改变的脑损伤实验时，必须格外小心，因为未知解剖位置的脑受体的光感受会影响睾丸状态。
Photoperiodic control of testis growth inPasser domesticus(house sparrow) is mediated entirely by extraretinal photoreceptors in the brain. The eyes do not participate in photoperiodically significant photoreception. Removal of the pineal organ does not affect either the response to light or, to a first approximation, the process of recrudescence. The intensity of light reaching the retina and that reaching the extraretinal photoreceptor were varied independently. This technique will make it possible to study brain photoreception in species of birds that will not tolerate blinding. Extreme caution is necessary in the interpretation of brain lesion experiments in which reproductive function is modified, since photoreception by brain receptors of unknown anatomical location affects testicular state.