Journal
NATURE COMMUNICATIONS
Volume 7, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms11070
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Funding
- Canadian Institutes of Health Research
- Canada Fund for Innovation
- Vanier Canada Graduate Scholarship
- Centre for Research on Brain, Language and Music (CRBLM)
- Killam Foundation
- Fonds de Recherche du Quebec-Sante
- National Science and Engineering Research Council of Canada
- National Institutes of Health [2R01EB009048-05]
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The auditory frequency-following response (FFR) to complex periodic sounds is used to study the subcortical auditory system, and has been proposed as a biomarker for disorders that feature abnormal sound processing. Despite its value in fundamental and clinical research, the neural origins of the FFR are unclear. Using magnetoencephalography, we observe a strong, right-asymmetric contribution to the FFR from the human auditory cortex at the fundamental frequency of the stimulus, in addition to signal from cochlear nucleus, inferior colliculus and medial geniculate. This finding is highly relevant for our understanding of plasticity and pathology in the auditory system, as well as higher-level cognition such as speech and music processing. It suggests that previous interpretations of the FFR may need re-examination using methods that allow for source separation.
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