TY - JOUR
T1 - Functional cortical and subcortical abnormalities in pedophilia: a combined study using a choice reaction time task and fMRI
AU - Poeppl, TB
AU - Nitschke, J
AU - Dombert, B
AU - Santtila, Pekka
AU - Greenlee, MW
AU - Osterheider, M
AU - Mokros, A
PY - 2011
Y1 - 2011
N2 - INTRODUCTION\nPedophiles show sexual interest in prepubescent children but not in adults. Research into the neurofunctional mechanisms of paraphilias has gathered momentum over the last years.\nAIM\nTo elucidate the underlying neural processing of sexual interest among pedophiles and to highlight the differences in comparison with nonparaphilic sexual interest in adults.\nMETHODS\nNine pedophilic patients and 11 nonpedophilic control subjects underwent functional magnetic resonance imaging (fMRI) while viewing pictures of nude (prepubescents, pubescents, and adults) and neutral content, as well as performing a concomitant choice reaction time task (CRTT).\nMAIN OUTCOME MEASURES\nBrain blood oxygen level-dependent (BOLD) signals and response latencies in the CRTT during exposure to each picture category.\nRESULTS\nAnalysis of behavioral data showed group differences in reaction times regarding prepubescent and adult but not pubescent stimuli. During stimulation with pictures displaying nude prepubescents, pedophiles showed increased BOLD response in brain areas known to be involved in processing of visual sexual stimuli. Comparison of pedophilic patients with the control group discovered differences in BOLD responses with respect to prepubescent and adult but not to pubescent stimuli. Differential effects in particular occurred in the cingulate gyrus and insular region.\nCONCLUSIONS\nThe brain response of pedophiles to visual sexual stimulation by images of nude prepubescents is comparable with previously described neural patterns of sexual processing in nonpedophilic human males evoked by visual stimuli depicting nude adults. Nevertheless, group differences found in the cingulate gyrus and the insular region suggest an important role of these brain areas in pedophilic sexual interest. Furthermore, combining attention-based methods like CRTT with fMRI may be a viable option for future diagnostic procedures regarding pedophilia.
AB - INTRODUCTION\nPedophiles show sexual interest in prepubescent children but not in adults. Research into the neurofunctional mechanisms of paraphilias has gathered momentum over the last years.\nAIM\nTo elucidate the underlying neural processing of sexual interest among pedophiles and to highlight the differences in comparison with nonparaphilic sexual interest in adults.\nMETHODS\nNine pedophilic patients and 11 nonpedophilic control subjects underwent functional magnetic resonance imaging (fMRI) while viewing pictures of nude (prepubescents, pubescents, and adults) and neutral content, as well as performing a concomitant choice reaction time task (CRTT).\nMAIN OUTCOME MEASURES\nBrain blood oxygen level-dependent (BOLD) signals and response latencies in the CRTT during exposure to each picture category.\nRESULTS\nAnalysis of behavioral data showed group differences in reaction times regarding prepubescent and adult but not pubescent stimuli. During stimulation with pictures displaying nude prepubescents, pedophiles showed increased BOLD response in brain areas known to be involved in processing of visual sexual stimuli. Comparison of pedophilic patients with the control group discovered differences in BOLD responses with respect to prepubescent and adult but not to pubescent stimuli. Differential effects in particular occurred in the cingulate gyrus and insular region.\nCONCLUSIONS\nThe brain response of pedophiles to visual sexual stimulation by images of nude prepubescents is comparable with previously described neural patterns of sexual processing in nonpedophilic human males evoked by visual stimuli depicting nude adults. Nevertheless, group differences found in the cingulate gyrus and the insular region suggest an important role of these brain areas in pedophilic sexual interest. Furthermore, combining attention-based methods like CRTT with fMRI may be a viable option for future diagnostic procedures regarding pedophilia.
U2 - 10.1111/j.1743-6109.2011.02248.x
DO - 10.1111/j.1743-6109.2011.02248.x
M3 - Artikel
SN - 1743-6095
VL - 8
SP - 1660
EP - 1674
JO - The Journal of Sexual Medicine
JF - The Journal of Sexual Medicine
IS - 6
ER -