Contributions of non-primary cortical sources to auditory temporal processing

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Ehsan Darestani FarahaniAstrid van Wieringen

Abstract

Temporal processing is essential for speech perception and directional hearing. However, the number and locations of cortical sources involved in auditory temporal processing are still a matter of debate. Using source reconstruction of human EEG responses, we show that, in addition to primary sources in the auditory cortices, sources outside the auditory cortex, designated as non-primary sources, are involved in auditory temporal processing. Non-primary sources within the left and right motor areas, the superior parietal lobe and the right occipital lobe were activated by amplitude-modulated stimuli, and were involved in the functional network. The robustness of these findings was checked for different stimulation conditions. The non-primary sources showed weaker phase-locking and lower activity than primary sources. These findings suggest that the non-primary sources belong to the non-primary auditory pathway. This pathway and non-primary sources detected in motor area explain how, in temporal prediction of upcoming stimuli and motor theory of speech perception, the motor area receives auditory inputs.

Citations

Jul 28, 2020·Frontiers in Systems Neuroscience·Inga Griskova-BulanovaJovana Bjekic
Nov 10, 2020·Human Brain Mapping·Ehsan Darestani FarahaniAstrid van Wieringen
Dec 22, 2020·Frontiers in Aging Neuroscience·Ehsan Darestani FarahaniAstrid van Wieringen
Feb 14, 2021·Brain Sciences·Vykinta ParciauskaiteInga Griskova-Bulanova
Jun 30, 2021·Brain Topography·Razieh AlemiAlexandre Lehmann
Nov 4, 2021·The European Journal of Neuroscience·Raúl Granados BarberoJan Wouters

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