Kubota K, Niki H, Goto A
Acta Neurobiol Exp (Wars). 1972;32(2):177-92.
Single unit activity was recorded from the thalamus of rhesus monkeys while they performed a delayed-alternation bar-pressing task. Nine units in the dorsomedial nucleus of the thalamus were activated prior to the lever presses of the contralateral hand, as indicated by an EMG of the triceps brachii muscle. In this same region, no units were found that became active during the delay period. In contrast, three units in the ventralis lateralis nucleus of the thalamus were activated simultaneously with lever presses. The results indicate that the dorsomedial nucleus may be involved with the initiation of lever pressing responses in the delayed alternation task. The thalamic units studied here were compared with those observed previously in the prefrontal cortex and the caudate nucleus.
在恒河猴执行延迟交替压杆任务时，记录其丘脑的单个神经元活动。如肱三头肌肌电图所示，丘脑背内侧核中的9个神经元在对侧手按压杠杆之前被激活。在同一区域，未发现有神经元在延迟期变得活跃。相比之下，丘脑腹外侧核中的3个神经元在按压杠杆时同时被激活。结果表明，背内侧核可能参与延迟交替任务中按压杠杆反应的启动。将此处研究的丘脑神经元与先前在额叶前皮质和尾状核中观察到的神经元进行了比较。
