Lemniscus trigeminalis

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The lemniscus trigeminalis is a fiber tract in the brain that carries information about tactile perception and depth sensitivity of the face from the 5th cranial nerve ( trigeminal nerve ) or its cranial nerve nucleus ( nucleus principalis nervi trigemini ) to the corresponding nucleus of the thalamus ( nucleus ventralis posteromedialis , VPM) . It attaches to the lemniscus medialis , which transmits information of the same quality to all other regions of the body from the spinal cord to the thalamus. It also crosses to the opposite side before reaching the thalamus, so that the information from one half of the face only ever reaches the thalamus of the other half of the body. Sometimes the lemniscus trigeminalis is also considered to be the cephalic part of the lemniscus medialis, as it contains information from the head area.

The VPM then sends the information from the lemniscus trigeminalis together with that from the lemniscus medialis to the somatosensory cortex ( gyrus postcentralis ) of the cerebral cortex .

There is also the lateral lemniscus , which is part of the auditory pathway .

literature

  • Martin Trepel: Neuroanatomy . 4th edition. Urban & Fischer Verlag / Elsevier GmbH, Munich 2008, ISBN 978-3-437-41298-1 , p. 166 .