To investigate the possible influence of stimulation of the immune system on cognitive tasks, C healthy volunteers were vaccinated against hepatitis B and tested over a 6 month-period in a simple reaction times and the Stroop task. In general, the Stroop effect demonstrates that both the name and meaning of a word are automatically processed even when voluntary attention is trying hard not to process them. Unlike placebo group, vaccinated subjects showed a persistent lack of the classical Stroop effect. These findings may be explained by a constraint satisfaction model of the Stroop task, assuming a selective weakening of the connection matrix, and suggest that immune-cognitive effects may occur, besides the well known immune-cognitive influences like those elicited by emotional stress.
Long-term effects of vaccination on attentional performance / Nicoletti, Roberto; Porro, Carlo Adolfo; G., Brighetti; Monti, Daniela; Pagnoni, Giuseppe; Guido, Marcello; Rubichi, Sandro; Franceschi, Claudio. - In: VACCINE. - ISSN 0264-410X. - STAMPA. - 22:29-30(2004), pp. 3877-3881. [10.1016/j.vaccine.2004.04.008]
Long-term effects of vaccination on attentional performance
NICOLETTI, Roberto;PORRO, Carlo Adolfo;MONTI, Daniela;PAGNONI, Giuseppe;GUIDO, Marcello;RUBICHI, Sandro;FRANCESCHI, Claudio
2004
Abstract
To investigate the possible influence of stimulation of the immune system on cognitive tasks, C healthy volunteers were vaccinated against hepatitis B and tested over a 6 month-period in a simple reaction times and the Stroop task. In general, the Stroop effect demonstrates that both the name and meaning of a word are automatically processed even when voluntary attention is trying hard not to process them. Unlike placebo group, vaccinated subjects showed a persistent lack of the classical Stroop effect. These findings may be explained by a constraint satisfaction model of the Stroop task, assuming a selective weakening of the connection matrix, and suggest that immune-cognitive effects may occur, besides the well known immune-cognitive influences like those elicited by emotional stress.File | Dimensione | Formato | |
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