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Abstract #1789

MP3 your A1! How frequent headphone-usage shapes your auditory cortex

Robert Trampel 1 , Andreas Schfer 1 , Christine Lucas Tardif 1 , Miriam Waehnert 1 , Marcel Weiss 1,2 , Juliane Dinse 1 , Pierre-Louis Bazin 1 , and Robert Turner 1

1 Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany, 2 Faculty of Social and Behavioral Sciences, University of Amsterdam, Amsterdam, Netherlands

Due to the increasing popularity of devices such as mobile phones and MP3 players, more and more people frequently use headphones. We considered whether such intense headphone usage affects the myelination of primary human auditory cortex A1. Using maps of longitudinal relaxation time T1 as a marker for cortical myelin content, we show that in A1 weekly headphone usage rate is negatively correlated with T1. This finding suggests that frequent exposure to loud auditory stimuli increases myelination in primary auditory cortex.

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