Title Oscillatory brain activity during acute exercise: Tonic and transient neural response to an oddball task
Authors Ciria, Luis F., Luque-Casado, Antonio, Sanabria, Daniel, Holgado, Darias, Ivanov, Plamen Ch., PERAKAKIS , PANTELIS, PERAKAKIS , PANTELIS
External publication No
Means Psychophysiology
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 3.69200
Area International
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059961822&doi=10.1111%2fpsyp.13326&partnerID=40&md5=75c11638edaa7c1a335d8e53f6bdc8bc
Publication date 01/05/2019
ISI 000468001700005
Scopus Id 2-s2.0-85059961822
DOI 10.1111/psyp.13326
Abstract Intense physical exercise exerts measurable changes at various physiological levels that are well documented in the literature. However, despite the key role of the brain in processing inputs from internal organ systems and the external environment to coordinate and optimize behavior, little is known about brain dynamics during exercise. The present study investigates tonic and transient oscillatory brain activity in a group of participants performing an oddball task during a single bout of aerobic exercise. Twenty young males (19-32years) were recruited for two experimental sessions on separate days. EEG activity was recorded during a session of cycling at 80% (moderate-to-high intensity) of VO2max (maximum rate of oxygen consumption) while participants responded to infrequent targets (red square and big blue circle) presented among frequent nontargets (small blue circle). This was compared to a (baseline) light intensity session (30% VO2max) to control any potential effect of dual tasking (i.e., pedaling and performing the oddball task). A cluster-based nonparametric permutations test revealed an increase in power across the entire frequency spectrum during the moderate-to-high intensity exercise compared to light intensity. Furthermore, the more salient target (red square) elicited a lower increase in (stimulus-evoked) theta power in the 80% VO2max than in the light intensity condition. Alpha and lower beta power decreased less in the standard trials (small blue circle) during the moderate-to-high exercise condition than in the light exercise condition. The present study unveils, for the first time, a complex brain activity pattern during vigorous exercise while attending to task-relevant stimuli. Physical exercise induces physiological changes that are well described in the literature. Surprisingly, little is known about changes at brain level. This study examines tonic and stimulus-locked oscillatory brain dynamics of young adults under physical exertion while performing an (sustained attention) oddball task. Moderate-to-high intensity exercise induced an overall power increase across the EEG frequency spectrum, which was accompanied by a lesser power modulation of specific stimulus-locked brain rhythms, relative to a light intensity exercise. These results unveil a complex oscillatory brain activity pattern during vigorous exercise that cannot be explained as a mere general cortical activity increase.
Keywords brain function; brain rhythms; cluster analysis; EEG; exercise intensity; fitness; oddball
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