Abstract #4660

Resting State fcMRI Reveals Distinc Connectivity Patterns for Core-Belt-Parabelt Subfields of Human Auditory Cortex

Michael Amann^1,2, Julia Reinhardt², Jan Benner^2,3, Elke Hofmann⁴, Peter Schneider^3,5, Christoph Stippich², and Maria Blatow²

¹Medical Image Analysis Center (MIAC), Basel, Switzerland, ²Department of Radiology, University Hospital of Basel, Basel, Switzerland, ³Department of Neuroradiology, University of Heidelberg Medical School, Heidelberg, Germany, ⁴School of Music, Music-Academy Basel, Basel, Switzerland, ⁵Department of Neuroradiology, Section of Biomagnetism, University of Heidelberg Medical School, Heidelberg, Germany

Converging evidence supports the hypothesis that human auditory cortex (AC) follows the core-belt-parabelt organization found in non-human primates. In the study presented here, we assessed the functional connectivity of the core (medial Heschl’s gyrus, mHG), belt (posterior-lateral HG, plHG) and parabelt subfields (anterior-lateral HG, alHG and planum temporale, PT) by applying resting state functional connectivity MRI (fcMRI) on a cohort of 84 musicians. Assessing inter-hemispheric connectivity, we found significant differences between right and left plHG as well as in right and left PT. The contrast between the different subfields revealed highly differentiated neuronal networks, especially between mHG and plHG.

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