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  MEG Reveals Preference Specific Increases of Sexual-Image-Evoked Responses in Paedophilic Sexual Offenders and Healthy Controls

Krylova, M., Ristow, I., Marr, V., Borchardt, V., Li, M., Witzel, J., et al. (2020). MEG Reveals Preference Specific Increases of Sexual-Image-Evoked Responses in Paedophilic Sexual Offenders and Healthy Controls. World Journal of Biological Psychiatry, Epub ahead. doi:10.1080/15622975.2020.1789216.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-A9A3-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-A9A4-2
Genre: Journal Article

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 Creators:
Krylova, M, Author              
Ristow, I, Author
Marr, V, Author
Borchardt, V, Author
Li, M, Author              
Witzel, J, Author
Drumkova, K, Author
Harris, JA, Author
Zacharias, N, Author
Schiltz, K, Author
Amelung, T, Author
Beier, KM, Author
Kruger, TH, Author
Ponseti , J, Author
Schiffer, B, Author
Walter, H, Author
Kärgel , C, Author
Walter, M1, 2, Author              
Affiliations:
1Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
2Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              

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 Abstract: Objectives: Paedophilic disorder is characterized by sexual attraction towards children. Classification of a counterpart as sexually attractive likely occurs rapidly, and involves both conscious and unconscious attentional and cognitive processes. Magnetoencephalography (MEG) is an imaging method especially well-suited to examine visual and attentional processes triggered by sexual images within the range of milliseconds.Methods: We investigated brain responses to sexual images depicting adults (frequent) and children (infrequent stimulus) in seventeen paedophilic patients with a history of child sexual offending (P + CSO) and twenty healthy controls (HC) during a passive visual oddball paradigm. Event-related fields (ERF) were measured to extract the magnetic visual mismatch negativity (vMMNm), and how it relates to the processing of different classes of sexual stimuli.Results: P + CSO exhibited significantly longer vMMNm latencies (100-180ms post-stimulus) than HC. Moreover, P + CSO showed widespread increased amplitudes in response to child images starting from P3a and P3b components and lasting up to 400ms post-stimulus presentation localized in frontal and temporal brain regions.Conclusions: This study uncovers the first MEG differences in automatic change detection between P + CSO and HC during the presentation of subliminal sexual images of adults and children, contributing towards a better understanding of the neurobiological processes of P + CSO.

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 Dates: 2020-07
 Publication Status: Published online
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 Identifiers: DOI: 10.1080/15622975.2020.1789216
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Title: World Journal of Biological Psychiatry
Source Genre: Journal
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Pages: - Volume / Issue: Epub ahead Sequence Number: - Start / End Page: - Identifier: ISSN: 1562-2975