FUNCTIONAL ORGANIZATION OF SOMATOSENSORY AND AUDITORY PROCESSING IN THE CEREBRAL CORTEX: INSIGHTS FROM FMRI AND TYMPANIC MEMBRANE STIMULATION
DOI:
https://doi.org/10.48047/a8jq3m16Keywords:
Somatosensory cortex, Tympanic membrane, Auditory processing, Functional MR, Swallowing mechanismAbstract
This paper explores the functional structure of somatosensory areas of auditory processing within the cerebral cortex. We studied how the activity of temporal and parietal cortical areas was activated by the stimulation of the tympanic membrane by fMRI. The findings depict that there is an important activity in Brodmann areas (BA) 84, 44, and 86, which demonstrates that the temporal superior gyrus and postcentral gyrus are involved in auditory and somatosensory integration. Such results indicate a bilateral influence at the auditory cortex despite unilateral stimulation with implications in the processing of sensory information in ear. The mechanical phases of swallowing and relationship with muscles of the tympanic membrane and Eustachian tube are also examined in the work with special stress on the contribution to acoustic reflexes made by the tensor tympani. Such understandings will be useful in clinical applications, such as the possibility of identifying subclinical auditory perception deficits and avert hearing l
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