条件性抑制大鼠计数行为。
Conditioned suppression of counting behavior in rats.
出版信息
J Exp Anal Behav. 1973 Jan;19(1):93-100. doi: 10.1901/jeab.1973.19-93.
Three rats were trained on a schedule in which a response on lever B was reinforced only if it was preceded by a minimum number of consecutive responses on lever A. The minimum requirement was 27 A responses for Rat 1, and 20 A responses for Rats 2 and 3. The schedule maintained high rates of responding on lever A, and a slow, spaced pattern of responding on lever B. The mean number of consecutive responses on lever A was slightly greater than the minimum required. The effect of superimposing on this behavior a stimulus that ended with an unavoidable shock was the suppression of responding on both levers during the pre-shock stimulus. Responses on lever A were more suppressed, and the proportion of relatively short response runs on lever A during the pre-shock stimulus increased. With all three rats, the mean number of consecutive responses on lever A during the pre-shock stimulus decreased to a value below the minimum requirement for reinforcement of the subsequent B response.
三只老鼠在一种方案下接受训练，只有在按下 A 杆连续达到最小次数后，按下 B 杆才会得到强化。老鼠 1 的最小要求是 27 次 A 杆响应，老鼠 2 和老鼠 3 的最小要求是 20 次 A 杆响应。该方案保持了 A 杆的高响应率，并在 B 杆上产生缓慢的、间隔的响应模式。A 杆上连续响应的平均次数略大于最小要求。将一种以不可避免的电击结束的刺激叠加在这种行为上，会导致在预电击刺激期间对两个操纵杆的反应受到抑制。A 杆上的反应受到更多抑制，并且在预电击刺激期间 A 杆上相对较短的反应运行比例增加。对于所有三只老鼠，在预电击刺激期间，A 杆上连续响应的平均次数减少到低于随后 B 响应强化的最小要求。
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