Abbreviations
From the following article
Oral, pharyngeal and esophageal motor function in aging
JoAnne Robbins, Allison Duke Bridges and Andrew Taylor
GI Motility online (2006)
doi:10.1038/gimo39
ACh
acetylcholine
CGRP
calcitonin gene-related peptide
CNS
central nervous system
CSA
cross-sectional area
LES
lower esophageal sphincter
MRI
magnetic resonance imaging
NTS
nucleus tractus solitarius
PIP
pressure inversion point
PVHs
periventricular white-matter hyperintensities
UES
upper esophageal sphincter
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