Belyĭ V P
Fiziol Zh SSSR Im I M Sechenova. 1981 Mar;67(3):375-83.
Changes of the unit activity patterns occurred in the rabbit dorsal hippocampus after self-stimulation. The changes occurred mostly in the theta-burst neurons and in neurons with reduction of spike amplitudes within each burst of discharges. Spontaneous activity of these neurons revealed bimodal histograms of interspike interval distribution. Within 1--3 sec after the self-stimulation the burst-type activity transformed into the regular or arrhythmic one with monomodal form of histogram. Spontaneously regular and arrhythmic neurons revealed no change of patterns. The findings corroborate the Grshtian hypothesis that the reward effect in self-stimulation is correlated with the motor rebound-effect. Experiments with cessation of reinforcing stimulus suggested a dependence of the burst-type pattern of discharges of the hippocampal neurons on the functional state of expectancy of the reinforcing stimulus.
自我刺激后，家兔背侧海马体的单位活动模式发生了变化。这些变化主要发生在θ爆发神经元以及放电串内峰电位幅度降低的神经元中。这些神经元的自发活动显示出峰电位间隔分布的双峰直方图。自我刺激后1至3秒内，爆发型活动转变为具有单峰直方图形式的规则或无节律活动。自发规则和无节律的神经元活动模式没有变化。这些发现证实了格什蒂安的假设，即自我刺激中的奖励效应与运动反弹效应相关。停止强化刺激的实验表明，海马神经元放电的爆发型模式依赖于强化刺激预期的功能状态。
