Embodiment and the origin of interval timing: Kinematic and electromyographic data

Catégorie

Journal Article

Auteurs

Addyman, C., Rocha, S., Fautrelle, L., French, R. M., Thomas, E., and Mareschal, D.

Année

2017

Titre

Embodiment and the origin of interval timing: Kinematic and electromyographic data

Journal / Livre / Conférence

Experimental Brain Research; doi:10.1007/s00221-016-4842-y

Résumé

Recent evidence suggests that interval timing (the judgment of durations lasting from approximately 500 ms. to a few minutes) is closely coupled to the action control system. We used surface electromyography (EMG) and motion capture technology to explore the emergence of this coupling in 4-, 6-, and 8-month-olds. We engaged infants in an active and socially relevant arm-raising task with seven cycles and response period. In one condition, cycles were slow (every 4 s); in another, they were fast (every 2 s). In the slow condition, we found evidence of time-locked sub-threshold EMG activity even in the absence of any observed overt motor responses at all three ages. This study shows that EMGs can be a more sensitive measure of interval timing in early development than overt behavior.

Issue

235

Volume

3

Pages

923-930

Mots-clés

Interval timing, Infants, Electromyography, EMG, Embodiment

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