Multiple levels of contextual influence on action‑based timing behavior and cortical activation
Fecha
2023Autor
Jounghani, Ali Rahimpour
Lanka, Pradyumna
Pollonini, Luca
Proksch, Shannon
Balasubramaniam, Ramesh
Bortfeld, Heather
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Rahimpour Jounghani, A., Lanka, P., Pollonini, L. et al. Multiple levels of contextual influence on action-based timing behavior and cortical activation. Sci Rep 13, 7154 (2023). https://doi.org/10.1038/s41598-023-33780-1
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scientifc reports
Resumen
Procedures used to elicit both behavioral and neurophysiological data to address a particular cognitive
question can impact the nature of the data collected. We used functional near-infrared spectroscopy
(fNIRS) to assess performance of a modified finger tapping task in which participants performed
synchronized or syncopated tapping relative to a metronomic tone. Both versions of the tapping
task included a pacing phase (tapping with the tone) followed by a continuation phase (tapping
without the tone). Both behavioral and brain-based findings revealed two distinct timing mechanisms
underlying the two forms of tapping. Here we investigate the impact of an additional—and extremely
subtle—manipulation of the study’s experimental design. We measured responses in 23 healthy adults
as they performed the two versions of the finger-tapping tasks either blocked by tapping type or
alternating from one to the other type during the course of the experiment. As in our previous study,
behavioral tapping indices and cortical hemodynamics were monitored, allowing us to compare results
across the two study designs. Consistent with previous findings, results reflected distinct, contextdependent
parameters of the tapping. Moreover, our results demonstrated a significant impact of
study design on rhythmic entrainment in the presence/absence of auditory stimuli. Tapping accuracy
and hemodynamic responsivity collectively indicate that the block design context is preferable for
studying action-based timing behavior.