High density ERP indices of conscious and unconscious semantic priming.
Brain Res Cogn Brain Res
; 17(3): 719-31, 2003 Oct.
Article
en En
| MEDLINE
| ID: mdl-14561458
The existence of differential brain mechanisms of conscious and unconscious processing is a matter of debate nowadays. The present experiment explores whether conscious and unconscious semantic priming in a lexical decision task at a long prime-target stimulus onset asynchrony (SOA) correlate with overlapping or different event related potential (ERP) effects. Results show that the N400 effect, which appeared when words were consciously perceived, completely disappeared when primes were masked at a level where the ability of participants to detect the prime was near chance. Instead, a rather different set of ERP effects was found to index unconscious semantic priming. This suggests that the processes at the basis of conscious and unconscious semantic analyses can under some circumstances be rather different. Moreover, our results support the notion that conscious and unconscious processes are at least partially separable in the brain.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Lenguaje
/
Procesos Mentales
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Brain Res Cogn Brain Res
Asunto de la revista:
CEREBRO
/
PSICOLOGIA
Año:
2003
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Países Bajos