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This type of descending motor pathway originates in the brainstem and governs automatic movements that help regulate muscle tone, posture and balance.
This article is about the ascending tracts â the pathways by which sensory information from the peripheral nerves is transmitted to the cerebral cortex.In some texts, ascending tracts are also known as somatosensory pathways or systems.unctionally, the ascending tracts can be divided into the type of information they transmit; conscious or unconscious: 1  Conscious tracts â Comprised of the dorsal column-medial lemniscal pathway, and the anterolateral system. 2  Unconscious tracts â Comprises of the spinocerebellar tracts.