1. Binaural Beats through the auditory pathway: from brainstem to connectivity patterns
- Author
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Hector D. Orozco Perez, Guillaume Dumas, Alexandre Lehmann, International Laboratory for Brain, Music and Sound Research (BRAMS), McMaster University [Hamilton, Ontario], Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)), Institut Pasteur [Paris]-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sorbonne Paris Cité (USPC), McGill University = Université McGill [Montréal, Canada], Centre for Research on Brain, Language and Music (CRBLM), The authors of this paper would like to thank Pierre Rainville and Bérangère Houze for sharing the E - SAS scales, Mihaela Felezeu for all the help and support during data acquisition and our participants for volunteering their time to perform the experiment, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut Pasteur [Paris], McGill University = Université McGill [Montréal, Canada]-Université de Montréal (UdeM), Center for Complex Systems and Brain Sciences, Florida Atlantic University [Boca Raton], GD was financially supported by the Institut Pasteur., Institut Pasteur [Paris] (IP)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université McGill -Université de Montréal (UdeM), and McGill University
- Subjects
Auditory Pathways ,Brain activity and meditation ,media_common.quotation_subject ,binaural beats ,brain entrainment ,Stimulus (physiology) ,Monaural ,050105 experimental psychology ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,law ,Perception ,Humans ,0501 psychology and cognitive sciences ,Single-Blind Method ,EEG ,10. No inequality ,media_common ,Auditory Cortex ,Brainwave entrainment ,Binaural beats ,General Neuroscience ,05 social sciences ,brain connectivity ,Monaural beats ,Electroencephalography ,General Medicine ,Frequency following response ,Acoustic Stimulation ,Cognition and Behavior ,[SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC] ,Psychology ,Neuroscience ,Binaural recording ,Auditory illusion ,030217 neurology & neurosurgery ,Research Article: New Research ,Brain Stem - Abstract
Visual Abstract, Binaural beating is a perceptual auditory illusion occurring when presenting two neighboring frequencies to each ear separately. Several controversial claims have been attributed to binaural beats regarding their ability to entrain human brain activity and mood, in both the scientific literature and the marketing realm. Here, we sought to address those questions in a robust fashion using a single-blind, active-controlled protocol. To do so, we compared the effects of binaural beats with a control beat stimulation (monaural beats, known to entrain brain activity but not mood) across four distinct levels in the human auditory pathway: subcortical and cortical entrainment, scalp-level functional connectivity and self-reports. Both stimuli elicited standard subcortical responses at the pure tone frequencies of the stimulus [i.e., frequency following response (FFR)], and entrained the cortex at the beat frequency [i.e., auditory steady state response (ASSR)]. Furthermore, functional connectivity patterns were modulated differentially by both kinds of stimuli, with binaural beats being the only one eliciting cross-frequency activity. Despite this, we did not find any mood modulation related to our experimental manipulation. Our results provide evidence that binaural beats elicit cross frequency connectivity patterns, but weakly entrain the cortex when compared with monaural beat stimuli. Whether binaural beats have an impact on cognitive performance or other mood measurements remains to be seen and can be further investigated within the proposed methodological framework.
- Published
- 2019