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Tag Archives | Limbic System

Limic system of the brain

Brain Scans Appear To Show Changes Associated With Violent Behavior And Substance Abuse

A brain imaging study suggests that men with a history of violent behavior may have greater gray matter volume in certain brain areas, whereas men with a history of substance use disorders may have reduced gray matter volume in other brain areas, according to a report published online today by the Archives of General Psychiatry, […]

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Confronting the Negativity Bias

Confronting The Negativity Bias

My previous post used the example of Stephen Colbert’s satirical “March to Keep Fear Alive” as a timely illustration of a larger point: humans evolved to be fearful – since that helped keep our ancestors alive – so we are very vulnerable to being frightened and even intimidated by threats, both real ones and “paper […]

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prescription medication bottle

Parkinson’s Disease Medications Can Cause Impulse Control Disorders

Mayo Clinic researchers found that dopamine agonists used in treating Parkinson’s disease result in impulse control disorders in as many as 22 percent of patients.  Mayo Clinic first reported on this topic in 2005. The follow-up study was published online in the February 2011 issue of Parkinsonism and Related Disorders. Included in this report is […]

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MRI of the brain

Integrity Of Brain Reward System Linked To Relapse After Subtance Abuse Treatment

At least 60 percent of individuals treated for an alcohol use disorder will relapse, typically within six months of treatment Given that the brain reward system (BRS) is implicated in the development and maintenance of all forms of addictive disorders, this study compared thickness, surface area, and volume of neocortical components of the BRS among […]

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MRI of the nucleus accumbens

Tinnitus Is Much More Than Just A “Hearing Problem”

Tinnitus appears to be produced by an unfortunate confluence of structural and functional changes in the brain, say neuroscientists at Georgetown University Medical Center (GUMC). The phantom ringing sounds heard by about 40 million people in the U.S. today are caused by brains that try, but fail to protect their human hosts against overwhelming auditory […]

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