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Acceleration and suppression of rats responding to avoid foot shock and tail shock

机译:加速和抑制大鼠反应避免脚部震动和尾巴震动

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摘要

Signalled response-independent shocks were superimposed on rats' wheel-turn responding to avoid shock administered to their feet through a grid floor or to their tails through fixed electrodes. In Experiment I, a tone paired with response-independent foot shock increased responding in three of four rats; a tone paired with tail shock increased responding in only one of four rats and suppressed responding in two rats. In Experiment II, a tone presented randomly with respect to response-independent shock had no reliable effect on responding to avoid foot shock or tail shock. In Experiment III, tail shock and foot shock were compared in a within-subject design while the temporal pattern of responding during conditioned stimuli was recorded. Responding during the conditioned stimulus preceding foot shock was characterized by initial suppression of responding at tone onset, followed by increased responding just before response-independent shock. Responding was suppressed throughout the conditioned stimulus preceding tail shock. Foot shock elicited bursts of responding, but tail shock did not.
机译:将信号独立于反应的电击叠加在大鼠的车轮转弯响应上,以避免通过网格地板对脚或通过固定电极对尾部施加电击。在实验一中,在四只大鼠中的三只中,一种语气与独立于反应的足部休克相结合,增加了反应。与尾巴震荡相伴的语气仅在四只大鼠中的一只增加了反应,而在两只大鼠中抑制了反应。在实验II中,随机响应于独立于反应的电击而呈现的音调对响应没有可靠的影响,从而避免了脚部电击或尾巴电击。在实验III中,在受试者内部设计中比较了尾部电击和脚部电击,同时记录了条件刺激期间的响应时间模式。足部电击之前在条件刺激中的反应特征是在音调发作时最初抑制了反应,然后在独立于反应的电击之前增加了反应。在整个过程中,在尾巴电击之前,反应都受到抑制。足部震动引起一阵反应,但尾巴震动却没有。

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