Dichotic memory: paradoxical effect of removing a left frontal gyrus: a case study.
Int J Neurosci
; 93(3-4): 279-86, 1998 Apr.
Article
en En
| MEDLINE
| ID: mdl-9639245
ABSTRACT
A 27-year-old right-handed woman was operated with resection of an epileptogenic lesion, a nonmalignant tumor, in the left frontal lobe. The surrounding cortical and subcortical tissue in the tumor-containing gyrus was also resected. Care was taken during the operation not to interfere with motor or language related cortical areas. Pre- and postoperatively, she was tested with a dichotic memory test. In the preoperative test, she showed a marked Left Ear Advantage. In the corresponding tests on the second and fourth postoperative days and at follow-up, her performance had changed to a Right Ear Advantage. A possible explanation of this result is that neighboring cortical areas involved in hemispheric specialization for lateralized, verbal cognitive functions are suppressed by a focal epiletogeneic activity caused by the tumor. The subsequent removal of this influence allowed these cortical areas to function normally.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pruebas de Audición Dicótica
/
Lóbulo Frontal
/
Memoria
Tipo de estudio:
Etiology_studies
Límite:
Adult
/
Female
/
Humans
Idioma:
En
Revista:
Int J Neurosci
Año:
1998
Tipo del documento:
Article
País de afiliación:
Noruega