Roohollah Massoudi, Marc M. Van Wanrooij, Sigrid M. C. I. Van Wetter, Huib Versnel and A. John Van Opstal Task-related preparatory modulations multiply with acoustic processing in monkey auditory cortex European Journal of Neuroscience 39
We characterised task-related top-down signals in monkey auditory cortex cells, by comparing activity during passive sound exposure to activity during a predictable and unpredictable reaction-time task for a variety of spectral-temporally modulated broadband sounds. The task-related signals were locked to the animal's reaction time, but invariant to the spectral and temporal acoustic modulations. Our findings demonstrate that the task-related and the acoustically evoked signal interact multiplicatively.
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