【摘要】 通过细胞外记录方法研究了大壁虎嗅球神经元在香蕉水气味作用下的放电模式。实验中共记录了21只大壁虎主嗅球上的275个神经元,其神经脉冲发放规律可以分为三类:无反应的神经元占43.6%,放电受到抑制的神经元占4.7%,而兴奋性神经元的比例达到51.7%。兴奋性神经元的放电模式又可以分为长时间持续兴奋(持续超过60s)、短时兴奋、延迟兴奋和取消时兴奋4种模式,分别占神经元总数的34.5%,6.25%,6.25%和4.7%,长时间持续兴奋占主导地位。这些神经元在嗅球上的分布范围很广,但在端部背侧和尾部腹侧的分布密度相对更高。本文工作为基于嗅觉的大壁虎运动干预中刺激位置和信号形态等关键参数的选取提供了基础信息。更多还原

【Abstract】 The neural responses of Gekko gecko olfactory bulb to amyl acetate were examined by extracellular recording techniques.Responses of 275neurons in 21geckoes could be classified into 3 categories,no response(43.6%) ,suppression(4.7%) ,and excitation(51.7%) .The excited neurons could be further classified into 4subtypes by temporal patterns,long term excitation(34.5%) ,short term excitation(6.25%) ,delayed response(6.25%) and neurons excited when cancelling stimulation(4.7%) .The neural responses elicited by amyl acetate could be found generally at the dorsal side of rostral part and the ventral side of caudal part in olfactory bulbs.The results provide basic information on locomotion modulation by stimulating the animal’s olfactory neural system.更多还原