Anterior trigeminothalamic tract

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The anterior trigeminothalamic tract (or ventral trigeminothalamic tract) serves as a proprioception, touch, and vibration pathway from the face, head and neck (the facial equivalent of the DCML). After receiving input from Meissner’s and Pacinian corpuscles, first order neurons enter the pons and synapse in the principal trigeminal nucleus. Axons of the second order neurons cross the midline and terminate in the ventral posterior medial thalamus (as opposed to the ventral posterior lateral thalamus as in the dorsal column/medial lemniscus and spinothalamic tract pathway) to mediate conscious sensation of proprioception, touch, and vibration from the face, head and neck. The third order neuron in the thalamus then connects to the sensory cortex of the postcentral gyrus.

Trigeminothalamic tracts (Netter image)

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