neural correlate
an association between a physical occurrence in the nervous system and a mental state or event. In the cerebellum, for example, the neural correlate of fear memory is provided by a long-term potentiation of the excitatory synapses between the parallel fibers and the Purkinje cells. The existence of neural correlates suggests potential biological bases for a variety of complex cognitive, emotional, and behavioral phenomena, including consciousness (awareness), perception, learning and memory, judgments and decisions, attitudes, and motivation.