[工具性选择过程中海马体的电活动]
[Electrical activity of the hippocampus during instrumental choice].
作者信息
Bartel's V I, Uryvaev Iu V
出版信息
Zh Vyssh Nerv Deiat Im I P Pavlova. 1980 Jan-Feb;30(1):17-21.
The power of theta-, delta-, alpha-, beta-low rhythms of the dorsal hippocampus telemetrically recorded was studied on four dogs after 24 and 48-hours water or food deprivation, after satisfaction of thirst and hunger as well as in choice between two different reinforcements (dried crust, water). A direct dependence between the strength of motivational state and the power of theta-rhythm has been found. In animals' behaviour two regimes of activity were singled out: stationary regime and transitory one. In the stationary regime, repetition of similar behavioural acts was attended by gradual increase in the power of theta-rhythm in the intervals between the signals. In case of changes from one behavioural form to the other (transitory regime) a selective sharp decline in the theta-rhythm power was observed.
对四只狗进行遥测记录，研究了在禁食24小时和48小时、禁水24小时和48小时后，以及在口渴和饥饿得到满足后，还有在两种不同强化物（干面包皮、水）之间进行选择时，背侧海马体的θ波、δ波、α波、低β波的功率情况。发现动机状态的强度与θ波功率之间存在直接相关性。在动物行为中区分出两种活动模式：稳定模式和过渡模式。在稳定模式下，相似行为动作的重复伴随着信号间隔期间θ波功率的逐渐增加。当从一种行为形式转变为另一种行为形式（过渡模式）时，观察到θ波功率选择性急剧下降。
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