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Embodiment and the origin of interval timing: kinematic and electromyographic data.


ABSTRACT: 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.

SUBMITTER: Addyman C 

PROVIDER: S-EPMC5315706 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Embodiment and the origin of interval timing: kinematic and electromyographic data.

Addyman Caspar C   Rocha Sinead S   Fautrelle Lilian L   French Robert M RM   Thomas Elizabeth E   Mareschal Denis D  

Experimental brain research 20161209 3


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  ...[more]

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