In vitro thermosensitivity of the midline thalamus

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• 作者：Travis ; Kathleen A. ; Bockholt ; H. Jeremy ; Zardetto-Smith ; Andrea M. ; Johnson ; Alan Kim
• 关键词：Thermoregulation ; Nucleus reuniens ; Hypothalamus ; Electrophysiology ; in vitro ; Thalamus temperature sensitive
• 刊名：Brain Research
• 出版年：1995
• 出版时间：July 17, 1995
• 年：1995
• 卷：686
• 期：1
• 页码：17-22
• 全文大小：467 K

文摘

This study compared the thermosensitivity and spontaneous activity of thalamic midline neurons with those of neurons in areas widely regarded to be involved in thermoregulation (preoptic/anterior hypothalamus and posterior hypothalamus). In vitro single unit recordings were made from neurons within the thalamic midline nuclei, the preoptic/anterior hypothalamus and posterior hypothalamus prior to and during a temperature change 3-7°C above and below 37°C. There were no significant differences in the degree of thermosensitivity or the proportion of thermosensitive neurons in the three areas. In each area examined, the thermosensitive neurons had a spontaneous activity which was significantly greater than that of the temperature-insensitive neurons. The results suggest that structures of the midline thalamus may play a role similar to that of the preoptic/anterior hypothalamus and posterior hypothalamus in the processing of temperature related information.