MEG reveals preference specific increases of sexual-image-evoked responses in paedophilic sexual offenders and healthy controls
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MEG reveals preference specific increases of sexual-image-evoked responses in paedophilic sexual offenders and healthy controls. / Krylova, Marina; Ristow, Inka; Marr, Vanessa; Borchardt, Viola; Li, Meng; Witzel, Joachim; Drumkova, Krasimira; Harris, Joseph A; Zacharias, Norman; Schiltz, Kolja; Amelung, Till; Beier, Klaus M; Kruger, Tillmann Hc; Ponseti, Jorge; Schiffer, Boris; Walter, Henrik; Kärgel, Christian; Walter, Martin.
In: WORLD J BIOL PSYCHIA, Vol. 22, No. 4, 04.2021, p. 257-270.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - MEG reveals preference specific increases of sexual-image-evoked responses in paedophilic sexual offenders and healthy controls
AU - Krylova, Marina
AU - Ristow, Inka
AU - Marr, Vanessa
AU - Borchardt, Viola
AU - Li, Meng
AU - Witzel, Joachim
AU - Drumkova, Krasimira
AU - Harris, Joseph A
AU - Zacharias, Norman
AU - Schiltz, Kolja
AU - Amelung, Till
AU - Beier, Klaus M
AU - Kruger, Tillmann Hc
AU - Ponseti, Jorge
AU - Schiffer, Boris
AU - Walter, Henrik
AU - Kärgel, Christian
AU - Walter, Martin
PY - 2021/4
Y1 - 2021/4
N2 - OBJECTIVES: Paedophilic disorder is characterised 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 (100-180 ms 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 400 ms post-stimulus presentation localised 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.
AB - OBJECTIVES: Paedophilic disorder is characterised 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 (100-180 ms 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 400 ms post-stimulus presentation localised 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.
U2 - 10.1080/15622975.2020.1789216
DO - 10.1080/15622975.2020.1789216
M3 - SCORING: Journal article
C2 - 32623929
VL - 22
SP - 257
EP - 270
JO - WORLD J BIOL PSYCHIA
JF - WORLD J BIOL PSYCHIA
SN - 1562-2975
IS - 4
ER -