TY  - JOUR
PY  - 2016//
TI  - Attenuation of auditory evoked potentials for hand and eye-initiated sounds
JO  - Biological psychology
A1  - Mifsud, Nathan G.
A1  - Beesley, Tom
A1  - Watson, Tamara L.
A1  - Whitford, Thomas J.
SP  - 61
EP  - 68
VL  - 120
IS  - 
N2  - Reduction of auditory event-related potentials (ERPs) to self-initiated sounds has been considered evidence for a predictive model in which copies of motor commands suppress sensory representations of incoming stimuli. However, in studies which involve arbitrary auditory stimuli evoked by sensory-unspecific motor actions, learned associations may underlie ERP differences. Here, in a new paradigm, eye motor output generated auditory sensory input, a naïve action-sensation contingency. We measured the electroencephalogram (EEG) of 40 participants exposed to pure tones, which they produced with either a button-press or volitional saccade. We found that button-press-initiated stimuli evoked reduced amplitude compared to externally initiated stimuli for both the N1 and P2 ERP components, whereas saccade-initiated stimuli evoked intermediate attenuation at N1 and no reduction at P2. These results indicate that the motor-to-sensory mapping involved in speech production may be partly generalized to other contingencies, and that learned associations also contribute to the N1 attenuation effect.<br><br>Crown Copyright © 2016. Published by Elsevier B.V. All rights reserved.<p />  <p>Language: en</p>
LA  - en
SN  - 0301-0511
UR  - http://dx.doi.org/10.1016/j.biopsycho.2016.08.011
ID  - ref1
ER  -