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  • Title: Automaticity and voluntary control of phase correction following event onset shifts in sensorimotor synchronization.
    Author: Repp BH.
    Journal: J Exp Psychol Hum Percept Perform; 2002 Apr; 28(2):410-30. PubMed ID: 11999863.
    Abstract:
    Seven experiments show that an event onset shift (EOS) in an auditory sequence causes an involuntary phase correction response (PCR) in synchronized finger tapping. This PCR is (a) equally large in inphase and antiphase tapping; (b) reduced but still present when the EOS occurs in either of two interleaved (target-distractor) sequences; (c) unaffected by increased pitch separation between these sequences; (d) asymptotic in magnitude as EOS magnitude increases, unlike the intentional PCR to expected phase shifts; and (e) enhanced when the EOS precedes the onset of tapping, because of phase resetting. Thus, phase correction is revealed to be partially automatic and partially under voluntary control, and to be based mainly on temporal information derived from simple onset detection.
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