Abstract
Models of neural mechanisms of voice control propose that voice auditory feedback is compared with an internal representation of the predicted voice output that is based on efference copies of motor commands. In addition, sensory memory from previous productions can also help the brain form predictions about incoming auditory feedback during vocal production. Previous studies have shown that the auditory evoked neural responses are maximally dampened in conditions where the incoming feedback closely matches the internal predictions. The present study aimed to determine if the predictability of stimulus direction influences the ERP responses to pitch shifts in voice auditory feedback. Subjects were tested with all upward stimuli, all downward stimuli, or randomized stimulus directions in separate blocks of trials. The N100 ERP response had a greater amplitude in conditions where the stimulus direction was randomized (unpredictable) compared to constant direction stimulus conditions (predictable), regardles...
Published Version
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