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Intraoral sensation in patients with brainstem lesions

Role of the rostral spinal trigeminal nuclei in pons

Departments of Neurology (Drs. Graham and Sharp), Physiology (Dr. Sharp), and Radiology (Dr. Dillon), San Francisco Veterans Administration Medical Center and the University of California, San Francisco, CA.

Two patients with caudal pontine lesions had diminished intraoral sensation for all modalities sparing facial sensation. A third patient with lateral medullary infarction developed diminished facial pain and temperature sensation sparing intraoral structures. This segregation of intraoral sensation within the brainstem is consistent with animal studies which show that the rostral spinal trigeminal nuclei in the caudal half of the pons play an important role in intraoral and dental sensation.

Address correspondence and reprint requests to Dr. Sharp, Department of Neurology, V127, Veterans Administration Medical Center, 4150 Clement Street, San Francisco, CA 94121.

Supported by National Science Foundation Grant BNS-8503176 to F.R.S.

Presented in part at the thirty-ninth annual meeting of the American Academy of Neurology, New York, NY, April 1987.

Received June 9, 1987. Accepted for publication in final form March 9, 1988.

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