corticobulbar pathway

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A bundle of nerve fibres belonging to the trigeminal nerve, facial nerve, and hypoglossal nerve, leading from the primary motor cortex to nuclei in the medulla oblongata. A lesion in this pathway can lead to pseudobulbar palsy. [From cortex + Greek bolbos an onion, alluding to the onion-shaped medulla oblongata]

Subjects: Psychology.

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