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Sensorimotor synchronization (SMS) is a form of referential behavior in which an action is coordinated with a predictable external stimulus. The neural bases of the synchronization ability remain unknown, even in the simpler, paradigmatic task of finger tapping to a metronome. In this task the subject is instructed to tap in synchrony with a periodic sequence of brief tones, and the time difference between each response and the corresponding stimulus tone (asynchrony) is recorded. We make a step towards the identification of the neurophysiological markers of SMS by recording high-density EEG event-related potentials and the concurrent behavioral response-stimulus asynchronies during an isochronous paced finger-tapping task. Using principal component analysis, we found an asymmetry between the traces for advanced and delayed responses to the stimulus, in accordance with previous behavioral observations from perturbation studies. We also found that the amplitude of the second component encodes the higher-level percept of asynchrony 100 ms after the current stimulus. Furthermore, its amplitude predicts the asynchrony of the next step, past 300 ms from the previous stimulus, independently of the period length. Moreover, the neurophysiological processing of synchronization errors is performed within a fixed-duration interval after the stimulus. Our results suggest that the correction of a large asynchrony in a periodic task and the recovery of synchrony after a perturbation could be driven by similar neural processes. © 2015, Springer-Verlag Berlin Heidelberg.


Documento: Artículo
Título:Sensorimotor synchronization: neurophysiological markers of the asynchrony in a finger-tapping task
Autor:Bavassi, L.; Kamienkowski, J.E.; Sigman, M.; Laje, R.
Filiación:Departamento de Física, FCEyN, UBA and IFIBA-CONICET, Pabellón 1, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología, Biología Molecular y Celular, FCEyN, UBA and IFIBYNE-CONICET, Buenos Aires, Argentina
Laboratorio de Inteligencia Artificial Aplicada, Departamento de Computación, FCEyN, UBA, Buenos Aires, Argentina
Universidad Torcuato Di Tella, Almirante Juan Saenz Valiente 1010, Buenos Aires, C1428BIJ, Argentina
Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Argentina, and CONICET Argentina, Buenos Aires, Argentina
Palabras clave:adult; evoked response; female; finger; human; male; physiology; psychomotor performance; reaction time; young adult; Adult; Evoked Potentials; Female; Fingers; Humans; Male; Psychomotor Performance; Reaction Time; Young Adult
Página de inicio:143
Página de fin:156
Título revista:Psychological Research
Título revista abreviado:Psychol. Res.


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---------- APA ----------
Bavassi, L., Kamienkowski, J.E., Sigman, M. & Laje, R. (2017) . Sensorimotor synchronization: neurophysiological markers of the asynchrony in a finger-tapping task. Psychological Research, 81(1), 143-156.
---------- CHICAGO ----------
Bavassi, L., Kamienkowski, J.E., Sigman, M., Laje, R. "Sensorimotor synchronization: neurophysiological markers of the asynchrony in a finger-tapping task" . Psychological Research 81, no. 1 (2017) : 143-156.
---------- MLA ----------
Bavassi, L., Kamienkowski, J.E., Sigman, M., Laje, R. "Sensorimotor synchronization: neurophysiological markers of the asynchrony in a finger-tapping task" . Psychological Research, vol. 81, no. 1, 2017, pp. 143-156.
---------- VANCOUVER ----------
Bavassi, L., Kamienkowski, J.E., Sigman, M., Laje, R. Sensorimotor synchronization: neurophysiological markers of the asynchrony in a finger-tapping task. Psychol. Res. 2017;81(1):143-156.