Visual search with biological threat stimuli : Accuracy, reaction times, and heart rate changes.

• Twenty-four participants were given a visual search task of deciding whether all the pictures in 3x3 search arrays contained a target picture from a deviant category, and heart rate was measured. The categories were: snakes, spiders, flowers, and mushrooms. Shorter reaction times (RT) were observed for fear-relevant (snake and spider) targets than for fear-irrelevant/neutral (flower and mushroom) targets. This difference was most pronounced for the participants presented with a grey-scale version of the search arrays. The first interbeat interval (IBI), after the search array onset, showed an effect of the target, while the second IBI also showed an effect of the distractors. The results suggest that controlled processing of the task operates together with automatic processing.

Ämnesord

SAMHÄLLSVETENSKAP  -- Psykologi (hsv//swe)

SOCIAL SCIENCES  -- Psychology (hsv//eng)

Nyckelord

Psychology

Psykologi

Publikations- och innehållstyp

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