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  • Title: Stimulus novelty and emotion perception: the near absence of habituation in the visual cortex.
    Author: Schupp HT, Stockburger J, Codispoti M, Junghöfer M, Weike AI, Hamm AO.
    Journal: Neuroreport; 2006 Mar 20; 17(4):365-9. PubMed ID: 16514360.
    Abstract:
    In rapid serial visual presentation of pictures, an early event-related brain potential component shows enlarged negativity over occipital regions for emotional pictures compared with neutral pictures. The present study examined whether the processing of emotional target pictures varies as a function of stimulus repetition. Accordingly, pictures of erotica, neutral contents, and mutilations were repeatedly presented (90 times) while the electroencephalogram was recorded with a 129 dense sensor array. As in previous studies, emotional pictures were associated with a larger posterior negativity than neutral pictures. Furthermore, differential emotion processing did not vary as a function of stimulus repetition and was similarly expressed across blocks of picture presentation. These findings suggest the near absence of habituation in differential emotion processing during perceptual processing.
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