Magnetic brain imaging of extinction processes in human classical conditioning.
Neuroreport
; 8(7): 1789-92, 1997 May 06.
Article
em En
| MEDLINE
| ID: mdl-9189934
ABSTRACT
By recording neuromagnetic events during aversive classical conditioning, we examined the extinction of a previously described conditioned response. Averaging over non-reinforced exposures to the conditioned stimulus revealed magnetic activity in the secondary somatosensory and insular cortices, appearing between 110 and 140 ms after the omitted unconditioned electric shock. We suggest this activity to be elicited by the discrepancy between shock expectancy and perceptual processes associated with the omission of the unconditioned stimulus, reflecting one of several brain processes in extinction.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Encéfalo
/
Magnetoencefalografia
/
Condicionamento Clássico
/
Extinção Psicológica
Limite:
Adult
/
Humans
Idioma:
En
Revista:
Neuroreport
Assunto da revista:
NEUROLOGIA
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Alemanha