WENDT R H, LINDSLEY D V, ADEY W R, FOX S S
Science. 1963 Jan 25;139(3552):336-8. doi: 10.1126/science.139.3552.336.
Newborn monkeys reared in darkness for 16 months, except for daily 1-hour periods of exposure to unpatterned light, were allowed to press a lever to obtain unpatterned light. The animals showed apparently insatiable responding, at rates that were extremely high as compared with rates for normally reared control animals.
除了每天有1小时暴露于无图案光线下外，在黑暗中饲养16个月的新生猴子被允许按压杠杆以获得无图案光。这些动物表现出明显无法满足的反应，与正常饲养的对照动物相比，其反应速率极高。
