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Which cranial nerve pathway sends sensory signals to the ventral posterior medial nucleus?

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Diagram of a human brain showing a median sagittal section, highlighting the fourth ventricle and cerebellum in the hindbrain, with labeled anatomical structures including the pons, medulla oblongata, and central canal of the spinal cord. — thalamus Sagittal section of the human brain, showing structures of the cerebellum, brainstem, and cerebral ventricles.

The ventral posterior medial (VPM) nucleus of the thalamus receives sensory input from the trigeminal nerve (cranial nerve V) complex. This pathway is responsible for conveying somatosensation—such as touch, pain, and temperature—from the head and face to the primary somatosensory cortex.1