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AJNR - American Journal of Neuroradiology

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Lateralization of Cortical Function in Swallowing: A Functional MR Imaging Study

Kristine M. Mosier^,a, Wen-Ching Liu^a, Joseph A. Maldjian^a, Rasesh Shah^a and Bijal Modi^a

^a From the Department of Oral Pathology Biology and Diagnostic Sciences, New Jersey Dental School (K.M.M.), the Department of Radiology, New Jersey Medical School (K.M.M., W-C.L.), and the New Jersey Medical School (R.S., B.M.), University of Medicine and Dentistry of New Jersey; and the Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia (J.A.M.).

View larger version (80K): [in a new window]   FIG 1. A and B, Coronal functional MR images overlaid to T1-weighted (450/14/0.75) anatomic MR images show activation of the primary motor cortex (arrows) and superior temporal gyrus (arrowhead) during a 10-second dry swallow task for subjects 4 (A) and 6 (B)

View larger version (14K): [in a new window]   FIG 2. Graph of the mean LI for three swallowing tasks in the right and left hemispheres. Each bar represents pooled data from all eight subjects. Positive values = left hemisphere; negative values = right hemisphere. Length of the bar represents the degree of laterality for that hemisphere