Feeds:
Posts
Comments

Archive for March, 2010

Latest research from Joshua W Buckholtz et al. points to that the brain’s reward system concerning psychopaths is quite different from the rest of us.  According to him, they found that “a hyper-reactive dopamine reward system may be the foundation for some of the most problematic behaviors associated with psychopathy, such as violent crime, recidivism and substance abuse.” For more info;
Mesolimbic dopamine reward system hypersensitivity in individuals with psychopathic traits. By; Joshua W Buckholtz, Michael T Treadway, Ronald L Cowan, Neil D Woodward, Stephen D Benning, Rui Li, M Sib Ansari, Ronald M Baldwin, Ashley N Schwartzman, Evan S Shelby, Clarence E Smith, David Cole, Robert M Kessler & David H Zald. Nature, Neuroscience, 2010 (14 March 2010)  Here

A write-up by Science Daily, Psychopaths’ Brains Wired to Seek Rewards, No Matter the Consequences (Mar. 15, 2010) Here

A post by Dr. Simon on the topic, Having to Win: The Combative Thinking of the  Here

More research of interest from 2010,  has been added to my original site,  Here  once on the desired page, scroll down past the text (in Swedish) to reach the latest research.

Advertisements

Read Full Post »

More brain abnormalities have been found concerning psychopathic individuals, Increased volume of the striatum in psychopathic individuals. By; Glenn AL, Raine A, Yaralian PS, Yang Y. Biol Psychiatry. 2010 Jan 1;67(1):52-8.   Here  Update; pdf  Here

“BACKGROUND: The corpus striatum, comprised of the caudate, putamen, and globus pallidus, plays an important role in reward processing and may be involved in the pathophysiology of antisocial behavior. Few studies have explored whether differences are present in the striatum of antisocial individuals. Here, we examine the structure of the striatum in relation to psychopathy. METHODS: Using a case-control design, we examined the volume of the striatum in psychopathic individuals compared with control subjects matched for age, sex, ethnicity, and substance dependence. Twenty-two psychopathic individuals assessed using the Psychopathy Checklist-Revised and 22 comparison subjects underwent structural magnetic resonance imaging. Volumes of the left and right lenticular nucleus (putamen and globus pallidus), caudate head, and caudate body were assessed and the psychopathic and control groups were compared. RESULTS: Psychopathic individuals showed a 9.6% increase in striatum volumes. Analyses of subfactors of psychopathy revealed that caudate body volumes were primarily associated with the interpersonal and affective features of psychopathy, while caudate head volumes were primarily associated with the impulsive, stimulation-seeking features. CONCLUSIONS: These findings provide new evidence for differences in the striatum of psychopathic individuals. This structural difference may partially underlie the reward-seeking and decision-making deficits associated with psychopathy.”

The Striatum,  to get a 3D effect click on the picture or the link below: http://upload.wikimedia.org/wikipedia/commons/a/a7/Striatum.gif

Read Full Post »

A Survey

“The DSM 5 work group that is focused on personality disorders has proposed new criteria to diagnose antisocial personality, also called psychopathy and sociopathy. They have asked for feedback not only from professionals, but also from victims and family members.” via Lovefraud. If you have been victimized and would like to take part in the survey, please klick   Here

Read Full Post »