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localization of brainstem lesions - oculomotor and trochlea nuclei, abducens and facial nuclei, hypoglossal nucleus, dorsal motor nucleus, nucleus ambiguus, medial lemniscus, lateral spinothalamic tract, corticospinal tract

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Indirect spinothalamic pathways. These pathways mediate the affective and arousal components of pain, temperature, and simple tactile sensations. (A) The ascending axons in the paleothalamic tract synapse in the brainstem reticular formation and neurons in midline and intralaminar thalamic nuclei, which then project diffusely to the cerebral cortex including the cingulate gyrus. (B) In the spinoreticular tract, one group of ascending axons projects to the medullary reticular formation, and…

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