Sax L, Gallistel C R
University of Pennsylvania.
Behav Neurosci. 1991 Dec;105(6):884-900. doi: 10.1037//0735-7044.105.6.884.
Only the function relating the required pulse frequency to the interburst interval discriminates between the priming effect and the rewarding effect: Separating two short bursts of pulses has no effect on their combined rewarding effect, but it enhances their priming effect. There are significant nonscalar differences between animals in the number-current and charge-duration functions for priming and reward, but there are no significant differences in these functions between effects within animals. Substantially more electrical-stimulation is required to produce good priming than to produce a reward that sustains maximum possible levels of performance. These findings suggest that the priming effect is a transient excitement generated by the receipt of one or more very large rewards. The discussion elaborates a model that reconciles this hypothesis with the earlier finding that the rewarding effect may be blocked pharmacologically without blocking priming.
分离两个短脉冲群对它们的综合奖赏效应没有影响，但会增强它们的启动效应。在动物之间，启动和奖赏的电流-数量函数以及电荷-持续时间函数存在显著的非标度差异，但在动物体内，这些效应之间的这些函数没有显著差异。产生良好的启动效应所需的电刺激比产生维持最大可能性能水平的奖赏所需的电刺激要多得多。这些发现表明，启动效应是由接收一个或多个非常大的奖赏所产生的短暂兴奋。讨论阐述了一个模型，该模型将这一假设与早期的发现相协调，即奖赏效应可能在不阻断启动的情况下被药理学阻断。
