RESUMO
We studied planning behavior in a group of normal subjects and a group of closed head injury patients (CHI). A computerized version of the traveling salesman's problem was used as a visuospatial planning ability task. The program collected measurements of partial times, number of moves, and number of skipped subgoals. These measures allow us to calculate a "planning index" of subjects' planning ability. Results show that CHI patients present limitations in the planning process due to the lack of ongoing planning.
Assuntos
Tomada de Decisões , Lobo Frontal/fisiopatologia , Traumatismos Cranianos Fechados/complicações , Traumatismos Cranianos Fechados/fisiopatologia , Testes Neuropsicológicos , Transtornos da Percepção/etiologia , Percepção Espacial/fisiologia , Viagem , Adulto , Lobo Frontal/diagnóstico por imagem , Traumatismos Cranianos Fechados/diagnóstico , Humanos , Transtornos da Percepção/diagnóstico , Índice de Gravidade de Doença , Fatores de Tempo , Tomografia Computadorizada por Raios X , Campos Visuais/fisiologiaRESUMO
The Authors report a study on recognition memory in a series of 50 severe head injuries. The effect of cerebral trauma is expressed by reduction in recognition memory and in learning. A significant difference is found between frontal lesions and temporal lesions. Left temporal lobe damage causes a more severe deficit than right temporal lobe damage. Extradural and subdural haematomas cause no such severe deficit. Neurological syndrome of level of lesion significantly correlates with the performance. PTA duration shows no relation.
