Neuron activity in the monkey striatum during parallel performance of actions.

Spike activity was recorded from several neurons in the monkey striatum during the performance of a complex behavioral program including differentiation of conditioned signals of different levels of complexity. The most characteristic feature of spike activity in striatal neurons during behavior was found not to be the selective involvement of particular neurons in carrying out certain actions, but a reflection of behavior as a whole in the form of mosaics of neuron activity corresponding to the moments at which particular actions were performed and during the intervals between them.