HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Main » General Discussion (Forum) » Many researchers taking a... » Reply #51
Introducing Discussionist: A new forum by the creators of DU

Response to HiPointDem (Reply #25)

Wed Jan 16, 2013, 04:07 PM

51. More than one study, more than one team of researchers.

Your assertions here are no more based in understanding of the scientific evidence than your assertions elsewhere that there's no causative correlation between frontal lobe damage and violent behaviour. And contra your non-argument there's not really any reason to think that unconscious sexual arousal is anything other than innate; it's rather nonsensical to agree on the one hand that an unconscious sexual attraction to members of one's own gender is innate, and on the other that unconscious sexual attraction to children must involve some element of choice and agency. This really seems like nothing more than an attempt to impose some wishful thinking re "free will" and indivudual agency on certain deviant behaviours--perhaps because if it's freely chosen then it's much easier to treat it as a criminal issue rather than a medical issue, although at the same time I'd say that's a false dichotomy; having the innate desire itself doesn't mean it'll be acted upon, if it is then it becomes a criminal issue...but recognition of paedophilia as a brain disorder may at the same time lead to more effective treatment of paedophiles and prevent them from becoming offenders.

Other studies:

Introduction.  Child molestation or other pedophilic behavior may result as a consequence of a brain disorder.

Aim.  To characterize the mechanisms of pedophilic behavior associated with neurological diseases.

Methods.  We report eight patients with pedophilic behavior as a manifestation of their brain disorder and review the literature.

Main Outcome Measures.  The sexual, neuropsychiatric, and neurological aspects of a series of patients.

Results.  All eight developed sexual behavior toward prepubescent children in mid- to late-life coincident with the development of a neurological disorder. Five had limited insight, anxiety, or concern for their behavior and tended to have frontal lobe executive deficits. Most of this group had frontally predominant disorders. Two others retained insight and concern in the context of marked hypersexuality. This second group had treated Parkinson's disease and resembled reports of pedophilic behavior from subcortical lesions. The further presence of right temporal lobe-amygdala involvement may have predisposed to specific sexual preoccupation in some patients.

Conclusions.  Brain disorders may release a predisposition to sexual attraction for children through disinhibition with frontal disease, sexual preoccupation with right temporal disease, or hypersexuality with subcortical disease in non-motor basal ganglia, hypothalamus, or septal nuclei. Differentiating these mechanisms of pedophilic behavior from brain disease could facilitate targeted interventions. Mendez M and Shapira JS. Pedophilic behavior from brain disease. J Sex Med 2011;8:1092–1100.

http://onlinelibrary.wiley.com/doi/10.1111/j.1743-6109.2010.02172.x/abstract;jsessionid=202AB1C2FC934EDCF2AA40456D6D5571.d02t04?deniedAccessCustomisedMessage=&userIsAuthenticated=false


Abnormal amygdala activation profile in pedophilia

Alexander Sartorius MD, Dipl. Phys.,
Matthias Ruf Dipl. Ing.,
Christine Kief Dipl. Psych.,
Traute Demirakca Dr. Dipl.-Psych.,
Josef Bailer Prof. Dr. Dipl.-Psych.,
Gabriele Ende Priv.-Doz. Dr. rer. nat.,
Fritz A. Henn Prof. MD, PhD,
Andreas Meyer-Lindenberg Prof. MD, PhD,
Harald Dressing Prof. MD

Abstract

Despite considerable public interest research in neurobiological correlates of pedophilia is scarce. Since amygdala activation is central for emotional valuation, arousal, and salience, we investigated the activation profile of this structure in 10 male subjects with pedophilia (exclusively attracted to boys), all convicted sex-offenders and sentenced to forensic psychiatric treatment along with ten male heterosexual matched controls. We used a sexually non-explicit functional Magnetic Resonance Imaging (fMRI) paradigm with images of men, women, boys or girls randomly embedded in neutral target/non-target geometrical symbols. We applied statistical parametric mapping (SPM2) and SPSS 14 for image processing and analysis. While controls activated significantly less to pictures of children compared to adults, the activation profile was reversed in subjects with pedophilia, who exhibited significantly more activation to children than adults. The highest activation was observed for boys in the patient group, and for women in control participants. Our data show enhanced activation to children’s pictures even in an incidental context and suggest the provocative hypothesis that a normally present mechanism for reduced emotional arousal for children relative to adults is reversed in pedophilia, suggesting a neural substrate associated with deviant sexual preference in this condition. More extensive research in this field would be of benefit for both the victims and the offenders.
Alexander Sartorius and Matthias Ruf contributed equally to the paper.
European Archives of Psychiatry and Clinical Neuroscience European Archives of Psychiatry and Clinical Neuroscience
http://link.springer.com/article/10.1007%2Fs00406-008-0782-2?LI=true


Pedophilia is Linked to Reduced Activation in Hypothalamus and Lateral Prefrontal Cortex During Visual Erotic Stimulation

Martin Walter
,
Joachim Witzel
,
Christine Wiebking
,
Udo Gubka
,
Michael Rotte
,
Kolja Schiltz
,
Felix Bermpohl
,
Claus Tempelmann
,
Bernhard Bogerts
,
Hans Jochen Heinze
,
Georg Northoffemail address


Background

Although pedophilia is of high public concern, little is known about underlying neural mechanisms. Although pedophilic patients are sexually attracted to prepubescent children, they show no sexual interest toward adults. This study aimed to investigate the neural correlates of deficits of sexual and emotional arousal in pedophiles.
Methods

Thirteen pedophilic patients and 14 healthy control subjects were tested for differential neural activity during visual stimulation with emotional and erotic pictures with functional magnetic resonance imaging.
Results

Regions showing differential activations during the erotic condition comprised the hypothalamus, the periaqueductal gray, and dorsolateral prefrontal cortex, the latter correlating with a clinical measure. Alterations of emotional processing concerned the amygdala–hippocampus and dorsomedial prefrontal cortex.
Conclusions

Hypothesized regions relevant for processing of erotic stimuli in healthy individuals showed reduced activations during visual erotic stimulation in pedophilic patients. This suggests an impaired recruitment of key structures that might contribute to an altered sexual interest of these patients toward adults.

http://www.biologicalpsychiatryjournal.com/article/S0006-3223%2806%2901300-X/abstract


Assessment of Pedophilia Using Hemodynamic Brain Response to Sexual Stimuli
Jorge Ponseti, PhD; Oliver Granert, MSc; Olav Jansen, Prof MD; Stephan Wolff, MSc; Klaus Beier, Prof MD, PhD; Janina Neutze, MSc; Günther Deuschl, Prof MD; Hubertus Mehdorn, Prof MD; Hartwig Siebner, Prof MD; Hartmut Bosinski, Prof MD

Context Accurately assessing sexual preference is important in the treatment of child sex offenders. Phallometry is the standard method to identify sexual preference; however, this measure has been criticized for its intrusiveness and limited reliability.

Objective To evaluate whether spatial response pattern to sexual stimuli as revealed by a change in the blood oxygen level–dependent signal facilitates the identification of pedophiles.

Design During functional magnetic resonance imaging, pedophilic and nonpedophilic participants were briefly exposed to same- and opposite-sex images of nude children and adults. We calculated differences in blood oxygen level–dependent signals to child and adult sexual stimuli for each participant. The corresponding contrast images were entered into a group analysis to calculate whole-brain difference maps between groups. We calculated an expression value that corresponded to the group result for each participant. These expression values were submitted to 2 different classification algorithms: Fisher linear discriminant analysis and κ -nearest neighbor analysis. This classification procedure was cross-validated using the leave-one-out method.

Setting Section of Sexual Medicine, Medical School, Christian Albrechts University of Kiel, Kiel, Germany.

Participants We recruited 24 participants with pedophilia who were sexually attracted to either prepubescent girls (n = 11) or prepubescent boys (n = 13) and 32 healthy male controls who were sexually attracted to either adult women (n = 18) or adult men (n = 14).

Main Outcome Measures Sensitivity and specificity scores of the 2 classification algorithms.

Results The highest classification accuracy was achieved by Fisher linear discriminant analysis, which showed a mean accuracy of 95% (100% specificity, 88% sensitivity).

Conclusions Functional brain response patterns to sexual stimuli contain sufficient information to identify pedophiles with high accuracy. The automatic classification of these patterns is a promising objective tool to clinically diagnose pedophilia.

http://archpsyc.jamanetwork.com/article.aspx?articleid=1107448#qundefined

Reply to this post

Back to OP Alert abuse Link to post in-thread

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 111 replies Author Time Post
AlphaCentauri Jan 2013 OP
el_bryanto Jan 2013 #1
randome Jan 2013 #2
AlphaCentauri Jan 2013 #4
Pisces Jan 2013 #39
zappaman Jan 2013 #75
hopemountain Jan 2013 #81
obamanut2012 Jan 2013 #87
obamanut2012 Jan 2013 #86
cecilfirefox Jan 2013 #3
Bradical79 Jan 2013 #10
Live and Learn Jan 2013 #21
randome Jan 2013 #38
redqueen Jan 2013 #40
randome Jan 2013 #42
redqueen Jan 2013 #44
randome Jan 2013 #47
customerserviceguy Jan 2013 #83
garthranzz Jan 2013 #91
4Q2u2 Jan 2013 #5
duffyduff Jan 2013 #6
Bradical79 Jan 2013 #9
ismnotwasm Jan 2013 #20
EOTE Jan 2013 #31
ismnotwasm Jan 2013 #45
EOTE Jan 2013 #46
galileoreloaded Jan 2013 #48
ismnotwasm Jan 2013 #49
EOTE Jan 2013 #52
ismnotwasm Jan 2013 #65
randome Jan 2013 #85
ismnotwasm Jan 2013 #93
randome Jan 2013 #95
ismnotwasm Jan 2013 #99
randome Jan 2013 #101
EOTE Jan 2013 #108
customerserviceguy Jan 2013 #84
Sekhmets Daughter Jan 2013 #53
Bradical79 Jan 2013 #8
redqueen Jan 2013 #41
randome Jan 2013 #43
Nye Bevan Jan 2013 #7
CE5 Jan 2013 #11
Orrex Jan 2013 #13
REP Jan 2013 #26
Orrex Jan 2013 #30
REP Jan 2013 #35
Aerows Jan 2013 #78
Orrex Jan 2013 #82
pnwmom Jan 2013 #90
Orrex Jan 2013 #97
pnwmom Jan 2013 #109
antigone382 Jan 2013 #92
Orrex Jan 2013 #98
antigone382 Jan 2013 #100
Orrex Jan 2013 #102
former9thward Jan 2013 #18
obamanut2012 Jan 2013 #88
Ter Jan 2013 #16
alas_babylon Jan 2013 #80
Baitball Blogger Jan 2013 #12
Zorra Jan 2013 #14
Behind the Aegis Jan 2013 #28
backscatter712 Jan 2013 #15
Warren DeMontague Jan 2013 #17
MADem Jan 2013 #27
Warren DeMontague Jan 2013 #50
Chathamization Jan 2013 #72
Rex Jan 2013 #106
Hugabear Jan 2013 #19
HiPointDem Jan 2013 #22
cali Jan 2013 #24
HiPointDem Jan 2013 #25
LineLineLineLineNew Reply More than one study, more than one team of researchers.
Spider Jerusalem Jan 2013 #51
redqueen Jan 2013 #54
Spider Jerusalem Jan 2013 #55
redqueen Jan 2013 #56
Spider Jerusalem Jan 2013 #57
redqueen Jan 2013 #58
randome Jan 2013 #61
redqueen Jan 2013 #67
Spider Jerusalem Jan 2013 #63
redqueen Jan 2013 #70
Spider Jerusalem Jan 2013 #73
redqueen Jan 2013 #76
redqueen Jan 2013 #62
Spider Jerusalem Jan 2013 #69
redqueen Jan 2013 #74
Yo_Mama Jan 2013 #94
randome Jan 2013 #96
HiPointDem Jan 2013 #71
alcibiades_mystery Jan 2013 #66
HiPointDem Jan 2013 #77
Jamastiene Feb 2013 #110
napoleon_in_rags Jan 2013 #29
Recursion Jan 2013 #32
HiPointDem Jan 2013 #33
AngryAmish Jan 2013 #34
HiPointDem Jan 2013 #36
alcibiades_mystery Jan 2013 #68
Logical Jan 2013 #104
HiPointDem Jan 2013 #105
Rex Jan 2013 #107
davidpdx Jan 2013 #23
Zoeisright Jan 2013 #37
davidn3600 Jan 2013 #59
randome Jan 2013 #64
Behind the Aegis Jan 2013 #79
Jamastiene Feb 2013 #111
obamanut2012 Jan 2013 #89
MrSlayer Jan 2013 #60
ecstatic Jan 2013 #103
Please login to view edit histories.