000213523 001__ 213523
000213523 005__ 20180317093417.0
000213523 0247_ $$2doi$$a10.1016/j.heares.2015.09.011
000213523 022__ $$a1878-5891
000213523 037__ $$aARTICLE
000213523 245__ $$aBinaural beats increase interhemispheric alpha-band coherence between auditory cortices
000213523 260__ $$bElsevier$$c2015
000213523 269__ $$a2015
000213523 336__ $$aJournal Articles
000213523 520__ $$aBinaural beats (BBs) are an auditory illusion occurring when two tones of slightly different frequency are presented separately to each ear. BBs have been suggested to alter physiological and cognitive processes through synchronization of the brain hemispheres. To test this, we recorded electroencephalograms (EEG) at rest and while participants listened to BBs or a monaural control condition during which both tones were presented to both ears. We calculated for each condition the interhemispheric coherence, which expressed the synchrony between neural oscillations of both hemispheres. Compared to monaural beats and resting state, BBs enhanced interhemispheric coherence between the auditory cortices. Beat frequencies in the alpha (10 Hz) and theta (4 Hz) frequency range both increased interhemispheric coherence selectively at alpha frequencies. In a second experiment, we evaluated whether this coherence increase has a behavioral aftereffect on binaural listening. No effects were observed in a dichotic digit task performed immediately after BBs presentation. Our results suggest that BBs enhance alpha-band oscillation synchrony between the auditory cortices during auditory stimulation. This effect seems to reflect binaural integration rather than entrainment.
000213523 700__ $$aSolcà, Marco
000213523 700__ $$aMottaz, Anaïs
000213523 700__ $$aGuggisberg, Adrian G
000213523 773__ $$j332$$q233–237$$tHearing research
000213523 909CO $$ooai:infoscience.tind.io:213523$$particle$$pSV
000213523 909C0 $$0252449$$pBMI$$xU10454
000213523 917Z8 $$x242763
000213523 917Z8 $$x148230
000213523 917Z8 $$x148230
000213523 937__ $$aEPFL-ARTICLE-213523
000213523 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000213523 980__ $$aARTICLE