No disconnection syndrome after near-complete callosotomy.

ABSTRACT: Sensorimotor processing in the human brain is largely lateralized, with the corpus callosum integrating these processes into a unified experience. Following complete callosotomy, this integration breaks down, resulting in disconnection syndromes. We asked how much of the corpus callosum is sufficient to support functional unity-the absence of disconnection syndrome-by comparing three complete callosotomy patients with one retaining only the splenium. Using lateralized tasks across visual, tactile, visuospatial, and language domains, we predicted domain-specific deficits in the splenium-only patient based on established anatomical models of callosal topography. Strikingly, while complete callosotomy patients exhibited disconnection syndromes, the splenium patient demonstrated functional uni

SUBMITTER: Bekir S 

PROVIDER: S-EPMC12808738 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature