On the other hand, repetition enhancement
(RE), an increase in the neural response that is also associated to
stimulus recognition, learning, and prediction, has received much less
attention,especially in the auditory domain.
In the auditory system, individual neuron correlates of RS are
provided by animal studies showing stimulus-specific adaptation
(SSA), a decrease in neuronal spike firing in response to the frequent
presentation of particular sound features, in cortical and subcortical auditory nuclei. SSA may contribute
to sensory memory formation at different processing stages, and at
different time scales.A growing number of
human studies using event-related potentials (ERP) show compatible
evidence of increasing suppression of neuronal activity duringmemory
trace formation