【摘要】 采用慢性微电极技术,记录了9只清醒活动状态下的树鼩背侧海马的93个神经元的单位放电。结果表明,其自发活动的放电形式有单个不匀,单个均匀,束状和组群发放四种。其比例为单个不匀>组群发放>束状>均匀发放;其放电频率可分为高、中、低三类单位。频率分布曲线表明,放电频率为中频(3—10次/秒)的单位呈现峰值分布。更多还原

【Abstract】 The unit activity of 93 neurons in the dorsal hippocampus of 9 awake tree shrews had been recorded by a chronic microelectrode technique. The results show that there are four patterns of spontaneous activity in the region recorded: the single and irregular discharge (SIR); the single and regular discharge (SR) ; the bundle discharge (B) and the group discharge (G). The percentage of these patterns are as follows: SIR (58%)>G(29%)>B (12%)>SR ( 1%). Based on the frequencies of discharge, there are three types of units: the high, medium and low frequency unit. The distribution of frequencies suggested the peak was in the range of medium frequency (3-10 spikes/sec.).更多还原