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Abstract #3732

Brainstem activation from sustained vowel phonation

Hu Cheng1, Sophia Brink2, Carey Smith3, Daniel AAlto4, and Steven M Lulich3
1Psychological and Brain Sciences, Indiana University, Bloomington, IN, United States, 2Indiana University, Bloomington, IN, United States, 3Speech and Hearing, Indiana University, Bloomington, IN, United States, 4Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada

Synopsis

Keywords: fMRI Analysis, Head & Neck/ENT, brainstem, phonation

Motivation: The brainstem plays an essential role in relaying motor commands to the speech production apparatus with separate cranial nerve nuclei controlling the functions of the lips, jaw, tongue, soft palate, and larynx.

Goal(s): To localize some of these nuclei using BOLD imaging.

Approach: In the block design fMRI experiment, we employed simultaneous multi-slice EPI with high acceleration factor to image the brain stem. The task involved targeting cranial nerves V, VII, and XII by comparing two vowels [ɑ] and [i].

Results: We observed activation near the Hypoglossal nucleus for [ɑ]>[i] and activation near the Trigeminal nucleus for [i]>[a]..

Impact: Our results demonstrate the feasibility of localizing brainstem nucleus with fast simultaneous multi-slice EPI and sustained vowel phonation tasks.

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Keywords