Memory for different aspects of complex visual scenes after unilateral temporal- or frontal-lobe resection.
Delayed recognition memory for different aspects of complex visual scenes was examined in 65 patients with unilateral temporal- or frontal-lobe excisions and 15 normal control subjects. Right anterior temporal lobectomy, irrespective of the extent of hippocampal removal, impaired memory for figurative detail (the visual characteristics of the objects in a scene) and spatial composition (the arrangement of the filled and unfilled space in a scene). In contrast, only patients with right temporal-lobe lesions that included extensive hippocampal removal were impaired at detecting changes in the spatial location of specific objects. A subsequent study provided no evidence that right temporal lobectomy impairs the immediate recognition of these types of visual information, suggesting that the impairments observed after a delay represent a failure of retention or retrieval rather than of encoding.
Pigott
S
S
Department of Psychology, McGill University, Montreal, Quebec, Canada.
Milner
B
B
D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001931:Brain Mapping; D004827:Epilepsy / Q000503:physiopathology / Q000601:surgery; D005260:Female; D005625:Frontal Lobe / Q000503:physiopathology / Q000601:surgery*; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology*; D011939:Mental Recall / Q000502:physiology; D008875:Middle Aged; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D011581:Psychological Tests; D013028:Space Perception / Q000502:physiology; D013702:Temporal Lobe / Q000503:physiopathology / Q000601:surgery*