title: The importance of individual frequencies of endogenous brain oscillations for auditory cognition - A short review.
abstract: Oscillatory EEG activity in the human brain with frequencies in the gamma range (approx. 30-80Hz) is known to be relevant for a large number of cognitive processes. Interestingly, each subject reveals an individual frequency of the auditory gamma-band response (GBR) that coincides with the peak in the auditory steady state response (ASSR). A common resonance frequency of auditory cortex seems to underlie both the individual frequency of the GBR and the peak of the ASSR. This review sheds light on the functional role of oscillatory gamma activity for auditory processing. For successful processing, the auditory system has to track changes in auditory input over time and store information about past events in memory which allows the construction of auditory objects. Recent findings support the idea of gamma oscillations being involved in the partitioning of auditory input into discrete samples to facilitate higher order processing. We review experiments that seem to suggest that inter-individual differences in the resonance frequency are behaviorally relevant for gap detection and speech processing. A possible application of these resonance frequencies for brain computer interfaces is illustrated with regard to optimized individual presentation rates for auditory input to correspond with endogenous oscillatory activity. This article is part of a Special Issue entitled SI: Auditory working memory.
authors.affiliation: Experimental Psychology Lab, Department of Psychology, Cluster of Excellence "Hearing4all", European Medical School, Carl von Ossietzky University, Oldenburg, Germany.
authors.forename: Alina
authors.initials: A
authors.lastname: Baltus
authors.affiliation: Experimental Psychology Lab, Department of Psychology, Cluster of Excellence "Hearing4all", European Medical School, Carl von Ossietzky University, Oldenburg, Germany; Research Center Neurosensory Science, Carl von Ossietzky University, Oldenburg, Germany. Electronic address: christoph.herrmann@uni-oldenburg.de.
authors.forename: Christoph Siegfried
authors.initials: CS
authors.lastname: Herrmann
mesh_terms: D000818:Animals; D001307:Auditory Perception / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D065818:Gamma Rhythm / Q000502:physiology*; D006801:Humans; D008568:Memory / Q000502:physiology*
keywords: Auditory memory; Endogenous brain oscillations; Interindividual differences; Resonance frequency; Speech intelligibility