Abolished laser-evoked potentials and normal blink reflex in midlateral medullary infarction |
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| Authors: | P. P. Urban C. Hansen U. Baumgärtner S. Fitzek J. Marx C. Fitzek R. D. Treede H. C. Hopf |
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| Affiliation: | (1) University of Mainz, Langenbeckstrasse 1, D-55101 Mainz, Germany Tel.: +49-6131-175 162, Fax: +49-6131-173 271, DE;(2) Department of Neurology, University of Mainz, Langenbeckstrasse 1, D-55101 Mainz, Germany, DE;(3) Institute of Neuroradiology, University of Mainz, Langenbeckstrasse 1, D-55101 Mainz, Germany, DE;(4) Institute of Physiology, University of Mainz, Duesbergweg 6, D-55101 Mainz, Germany, DE |
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| Abstract: | We investigated two patients presenting with the rare finding of almost isolated hemianalgesia with a sensory level on the contralateral side sparing the face. Clinical findings, electrophysiological studies (absent laser-evoked pain-related somatosensory potentials, normal electrically evoked somatosensory potentials, magnetically evoked potentials, and blink reflexes), and magnetic resonance imaging showed the ventrolateral medullar tegmentum containing the spinothalamic tract to be affected by lacunar infarction. The blink reflex R2 component was unimpaired in both patients. Received: 7 May 1998 Received in revised form: 21 July 1998 Accepted: 26 August 1998 |
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| Keywords: | Lateral medullary infarction Dissociated hemianalgesia Laser-evoked potentials Blink reflex |
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