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Related to reticulospinal tract: Rubrospinal tract, Tectospinal tract
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These reticulospinal neurons give rise to the reticulospinal tract which occupies a lateral position within the pons, medulla, and spinal cord, and is predominantly ipsilateral; (2) at every level, lesions along the reticulospinal tract abolish shivering, while no effect upon shivering has been produced by extensive medial lesions or by lesions of the pyramidal tract and periventricular areas.
This patient had previously experienced an ischemic lateral medullary syndrome involving the left trigeminal spinothalamic nucleus and tract and probably also the left reticulospinal tract, with the result that he could no longer shiver on the left side of his body.
Shivering is mediated by the predominantly uncrossed reticulospinal tract.