| trigeminothalamic tract | General term designating projections from the spinal trigeminal and principal sensory nuclei of the trigeminal nerve to the thalamus; divided into a ventral trigeminothalamic tract (spinal trigeminal nucleus projections to the contralateral ventral posteromedial nucleus-VPM) and a dorsal trigeminothalamic tract (principal sensory nucleus projections to the ipsilateral VPM). See: trigeminal lemniscus. (05 Mar 2000) |
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