Similar effects of manipulations of attention on processing of phobic and nonphobic pictures
(English)Manuscript (preprint) (Other academic)
Previous studies showed reduced amplitudes of the early posterior negativity (EPN) and late positive potential (LPP) to emotional pictures when their location was task irrelevant. Perceptual load showed mixed effects on ERPs to emotional pictures. The present study investigated whether effects of spatial attention and perceptual load on emotional ERPs differed between phobic and other highly negative but nonphobic stimuli. Results confirmed that participants with phobia showed greater EPN and LPP to phobic and nonphobic, negative pictures than to neutral pictures. Critically, when the location of emotional pictures was task-irrelevant, LPP was reduced similarly to both phobic and nonphobic negative pictures (EPN was unaffected). Perceptual load had no effects on emotional ERPs to either phobic or nonphobic negative pictures. Our findings suggest that effects of spatial attention and perceptual load on emotional ERPs are comparable for phobic and other highly negative but nonphobic stimuli.
attention; phobia; event-related potentia
Research subject Psychology
IdentifiersURN: urn:nbn:se:su:diva-83565OAI: oai:DiVA.org:su-83565DiVA: diva2:576281