Walasek G, Wesierska M, Zieliński K
Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland.
Acta Neurobiol Exp (Wars). 1994;54(2):133-41.
Habituation of the effects elicited by presentation of novel auditory (wide band noise) and visual (darkness) stimuli on on-going bar pressing for food was studied in 48 male hooded rats. Novel stimuli elicited a decrease of the bar press rate. This attenuating effect was the strongest on the first onset of the stimulus of a given modality and then slowly decayed during the stimulus action. The effect from the noise stimulus habituated more rapidly than that elicited by darkness. Then, noise onset enhanced bar pressing, and termination of the noise decreased the response rate. In contrast, termination of the darkness increased the response rate. The difference between auditory and visual stimuli in rapidity of change from attenuating to facilitating effects was more evident for shorter than for longer stimuli durations. Summation of data from repetitive presentations revealed an overall attenuating effect of the visual stimulus and a facilitating effect of the auditory stimulus on bar press rate.
在48只雄性带帽大鼠中，研究了呈现新颖听觉（宽带噪声）和视觉（黑暗）刺激对正在进行的为获取食物而按压杠杆行为所产生的影响的习惯化情况。新颖刺激会引起按压杠杆速率的下降。这种衰减效应在给定模态刺激首次出现时最强，然后在刺激作用期间缓慢衰减。噪声刺激产生的效应比黑暗引起的效应更快习惯化。接着，噪声开始时会增强按压杠杆行为，而噪声终止时会降低反应速率。相反，黑暗终止时会提高反应速率。对于较短的刺激持续时间而言，听觉和视觉刺激在从衰减效应转变为促进效应的速度上的差异比对于较长刺激持续时间时更为明显。重复呈现的数据汇总显示，视觉刺激对按压杠杆速率总体上有衰减效应，而听觉刺激有促进效应。
