Activation of left intraparietal sulcus using a IMRI conceptual praxis paradigm
Arq. neuropsiquiatr
;
56(4): 808-11, dez. 1998. ilus
Artigo
em Inglês
| LILACS
| ID: lil-226023
ABSTRACT
The present paper reports the results of a fMRI subtraction study of the pattern of cortical activation induced by an ideational praxis paradigm in six normal right-handed subjects. The control task consisted of a sequence of complex meaningless hand movements. A complete study was done for each hand in each subject. The left intraparietal sulcus was the only structure activated in all subjects regardless of the hand used in the task. These findings, albeit preliminary, suggest that the organization of actions involving the mediation of tools and utensils are strongly lateralized to the left hemisphere and that damage to the dominant imtraparietal sulcus may be critical for the development of the clinical syndrome of conceptual apraxia.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Lobo Parietal
/
Imageamento por Ressonância Magnética
/
Córtex Cerebral
/
Mãos
/
Movimento
Limite:
Humanos
Idioma:
Inglês
Revista:
Arq. neuropsiquiatr
Assunto da revista:
Neurologia
/
Psiquiatria
Ano de publicação:
1998
Tipo de documento:
Artigo
País de afiliação:
Brasil
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