Fouriezos G, Randall D
School of Psychology, University of Ottawa, Ontario, Canada.
Behav Brain Res. 1997 Aug;87(1):111-3. doi: 10.1016/s0166-4328(97)02280-8.
Six rats trained to press a lever to obtain rewarding electrical stimulation of the brain through chronically implanted, lateral hypothalamic electrodes were used to estimate the rate at which short delays between the response and the reward degraded the rewarding effect of the stimulation. Frequency thresholds rose steadily with delays through to 2.2 s at a rate of 10% per second.
六只经过训练的大鼠通过长期植入下丘脑外侧电极来按压杠杆以获得脑部的奖励性电刺激，以此来估计反应与奖励之间的短延迟降低刺激奖励效果的速率。频率阈值随着延迟时间稳步上升，直至2.2秒，上升速率为每秒10%。
