Journal
PSYCHOPHYSIOLOGY
Volume 40, Issue 3, Pages 381-388Publisher
WILEY-BLACKWELL
DOI: 10.1111/1469-8986.00041
Keywords
emotion; attention; habituation; ERPs; N1; negativity bias
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Attentional habituation in response to emotional stimuli, an aspect of the interaction between cognitive and emotional processes that has received scant attention, was investigated. Event-related potentials were recorded using a 60-electrode array from 25 participants who attended to 120 presentations of three different picture types: emotionally negative (S-), positive (S+), and neutral (SO). The affective content of the stimulation was assessed, through questionnaires, by the participants themselves. N1 showed different patterns of habituation as a function of the stimulation: amplitudes indicated that S- was more resistant to habituation than SO and S+. This pattern, which reflects a greater capacity of S- to attract and maintain the participant's attention, is interpreted as a manifestation of the negativity bias, a phenomenon that reflects an evolution-favored set of mechanisms that facilitate a rapid and intense response to aversive events.
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