title: Visuoperceptual and visuospatial abilities prior to and after anterior temporal lobectomy: a case study.
abstract: We describe a patient who presented with temporal lobe epilepsy and a seizure onset pattern in the right temporo-occipital area. Structural MRI revealed sclerosis in the right hippocampus. A comprehensive presurgical neuropsychological assessment allowed us to disentangle deficits in visual object recognition and visual imagery from well-preserved spatial capacities. Following a right temporal lobectomy, the patient remained seizure free, and 1 year postsurgery, the patient's scores on object recognition and imagery were in the normal range. Our findings suggest that visual object recognition and visual imagery are sustained by cortical areas located in proximity to the temporo-occipital ventral pathway and that perceptual and imagery spatial processing is subserved as well by anatomically close mechanisms. Furthermore, the results seem to indicate that nonlesional paroxysmal activity in the posterior temporal lobe can cause chronic dysfunctions of the visual system and that it may be reversible with effective seizure control.
authors: Epilepsiezentrum Kork, Kehl-Kork, Germany.
authors: Ilona
authors: I
authors: Wisniewski
authors: Anke M
authors: AM
authors: Staack
authors: Sofia
authors: S
authors: Bilic
authors: Bernhard J
authors: BJ
authors: Steinhoff
authors: Lilianne
authors: L
authors: Manning
mesh_terms: D038481:Anterior Temporal Lobectomy / Q000379:methods*; D001921:Brain / Q000098:blood supply / Q000503:physiopathology; D003072:Cognition Disorders / Q000209:etiology / Q000601:surgery*; D004833:Epilepsy, Temporal Lobe / Q000150:complications / Q000652:urine*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007092:Imagination; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009483:Neuropsychological Tests; D010100:Oxygen / Q000097:blood; D010468:Perceptual Disorders / Q000209:etiology / Q000601:surgery*; D013028:Space Perception / Q000502:physiology*; D016896:Treatment Outcome
chemical_list: D010100:Oxygen