CHOICE AND DEPENDABILITY OF STIMULI THAT PREDICT SHOCK AND SAFETY
CHOICE AND DEPENDABILITY OF STIMULI THAT PREDICT SHOCK AND SAFETY
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DOI：
10.1901/jeab.1976.26-95
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发表时间：
1976-01-01
影响因子：
2.7
通讯作者：
ABBOTT, B
中科院分区：
文献类型：
--
作者：
BADIA, P;HARSH, J;ABBOTT, B
无论是选择一个信号的冲击条件下，一个无信号的一个控制的刺激，预测休克的存在（实验I），或由一个刺激，预测休克的情况下（实验II）进行了评估。这些刺激作为存在或不存在休克的预测因子的可靠性在很大范围内参数变化，受试者（大鼠）可以选择从无信号状态变为有信号状态。在第一个实验中，所有的冲击之前的信号，但是，信号之后的冲击的概率从1.0-0.02不等。所获得的数据表明，作为冲击的预测信号的可靠性是不重要的。当信号完全可靠时（所有信号都伴随着电击），以及当信号的可靠性系统性降低时，大鼠会变成信号状态。在第二个实验中，所有的信号都伴随着电击;然而，有些电击之前没有信号。数据表明，预测不存在电击的刺激的可靠性是重要的，因为随着可靠性降低，改变到信号条件也降低。
Whether choosing a signalled shock condition over an unsignalled one is controlled by a stimulus that predicts the presence of shock (Experiment I), or by a stimulus that predicts the absence of shock (Experiment II) was assessed. The dependability of these stimuli as predictors of either the presence or the absence of shock was parametrically varied over a wide range, and subjects (rats) were given an option to change from an unsignalled to a signalled condition. In the 1st experiment, all shocks were preceded by signals; however, the probability of a signal being followed by shock varied from 1.0-0.02. The data obtained indicate that the dependability of the signal as a predictor of shock is unimportant. Rats changed to the signalled condition when the signal was completely dependable (all signals followed by shock) and when the dependability of the signal was systematically degraded. In the 2nd experiment, all signals were followed by shock; however, some shocks were not preceded by a signal. The data show that the dependability of a stimulus predicting the absence of shock is important in that, as dependability decreases, changing to the signalled condition also decreases.