A ventral pontine lesion with corticospinal injury and preserved eye movements results in which syndrome?

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When the ventral pons is damaged, the corticospinal and bulbar (corticobulbar) pathways are knocked out, causing nearly complete paralysis of voluntary muscles while consciousness remains intact. Eye movements, especially vertical gaze, can be preserved because the oculomotor pathways are spared in this pattern. This combination—awake, profoundly paralyzed except for preserved eye movements—defines locked-in syndrome. The scenario fits this classic brainstem syndrome, whereas delirium shows fluctuating attention and confusion, Wernicke’s encephalopathy features include confusion with ophthalmoplegia and ataxia but not a pure ventral pontine pattern with preserved eye movement, and akinetic mutism involves little spontaneous movement from frontal-subcortical injury rather than a focal ventral pontine lesion with intact ocular motility.