Personality and the effects of acute alcohol intake. A contingent negative variation study in healthy subjects.
Funct Neurol
; 19(1): 25-30, 2004.
Article
em En
| MEDLINE
| ID: mdl-15212113
ABSTRACT
This study investigates the relationship between blood alcohol concentrations (BACs) and contingent negative variation (CNV). Fourteen healthy subjects were divided on the basis of their personality profiles--the Minnesota Multiphasic Personality Inventory (Hs+Hy+D/3)--into a high score (HS) and low score (LS) subgroup. The CNV was recorded using a choice-reaction time (RT) task. CNV recording was performed in two conditions inter-stimulus intervals (ISIs) of 1500 ms and 2500 ms at three different BACs (0.3, 0.5 and 0.8 g/L) after acute alcohol administration. At the high BAC (0.8 g/L), both subgroups showed a reduced CNV amplitude area and a longer RT (p<.05) in both ISI conditions. No effects either on the CNV or on the RT were observed at the low BAC (0.3 g/L). At the intermediate BAC (0.5 g/L), the HS subgroup displayed an increased CNV amplitude (p<.05), not accompanied by a significantly longer RT (short ISI condition), and a reduced late CNV (p<.05) with a longer RT (p<.05) (long ISI condition). In the LS group, only a longer RT was observed in the long ISI condition. CNV modifications point to an individual, apparently personality-related, threshold of sensitivity to different alcohol levels.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Personalidade
/
Resolução de Problemas
/
Tempo de Reação
/
Variação Contingente Negativa
/
Etanol
/
Intoxicação Alcoólica
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article