Pineal multiunit activity in conscious quail: effects of light, blinding, ganglionectomy.
Pineal multiunit activity in conscious quail: effects of light, blinding, ganglionectomy.
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有意识的鹌鹑的松果体多单位活动：光、致盲、神经节切除术的影响。
DOI：
10.1152/ajplegacy.1976.231.1.136
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
J. Bayle
中科院分区：
文献类型：
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作者：
S. Herbuté;J. Bayle
记录未麻醉的雄性日本鹌鹑松果体的多单位活动（MUA）。研究了光照方案对松果体细胞自发和闪光诱发放电模式的影响。将白天长度从 18 小时缩短至 6 小时/24 小时导致松果体 MUA 显着增加。松果体放电率在黑暗期间比在光周期的明亮部分期间更高。手电筒刺激总是会导致松果体 MUA 明显受到抑制。切断双侧视神经导致 MUA 水平显着增加。任何实验条件都不会改变失明鸟类中 MUA 的升高。因此，光周期和光刺激似乎对松果体活动很重要。不过，没有直接拍照的鹌鹑。颈上神经节切除术导致自发 MUA 略有增加，但不会抑制松果体对手电筒刺激的反应。
Multiunit activity (MUA) was recorded from thr pineal gland in unanesthetized male Japenese quail. The influence of light regimen on spontaneous and flash-evoked firing patterns of pineal cells was investigated. Shortening the day length from 18 to 6 h/24 h resulted in a marked increase in pineal MUA. Pineal firing rate was higher during the dark than during the light fraction of the photoperiod. Flashlight stimulation always led to a marked inhibition of the pineal MUA. Cutting the optic nerves bilaterally resulted in a marked increase in the level of MUA. None of the experimental conditions altered the elevated MUA in blinded birds. Thus, photoperiod and light stimulation appeared to be important for pineal activity; however, no direct photosended quail. Superior cervical ganglionectomy resulted in slightly increased spontaneous MUA but did not inhibit pineal responses to flashlight stimulations.