Frequency-domain analysis of fNIRS fluctuations induced by rhythmic mental arithmetic.

ABSTRACT: Functional near-infrared spectroscopy (fNIRS) is an increasingly used technology for imaging neural correlates of cognitive processes. However, fNIRS signals are commonly impaired by task-evoked and spontaneous hemodynamic oscillations of non-cerebral origin, a major challenge in fNIRS research. In an attempt to isolate the task-evoked cortical response, we investigated the coupling between hemodynamic changes arising from superficial and deep layers during mental effort. For this aim, we applied a rhythmic mental arithmetic task to induce cyclic hemodynamic fluctuations suitable for effective frequency-resolved measurements. Twenty university students aged 18-25 years (eight males) underwent the task while hemodynamic changes were monitored in the forehead using a newly developed NIRS dev

SUBMITTER: Molina-Rodriguez S 

PROVIDER: S-EPMC9540762 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature