Cocaine Users’ Brains Unable to Extinguish Drug Associations
Cocaine-addicted individuals say they find the drug much less enjoyable after years of use, but they have great difficulty quitting. A new brain imaging study led by researchers at the Icahn School of Medicine at Mount Sinai reveals why this might be so, as well as why a common psychological therapy may not work in addicted cocaine users.
Their study finds that chronic users have a “global impairment” in the ventromedial prefrontal cortex (VMPFC), an area of the brain that is linked to impulse and self-control, and is responsible for the kind of learning that assigns value to objects and behaviors.
The Mount Sinai study investigated a specific type of learning called extinction – the process by which a new, affectively neutral, association replaces an old, affectively arousing association – to identify the neurobiological mechanism that underlies the persistence of drug seeking in addiction despite negative consequences and a reduction in the drug’s rewarding affects.
Click here to read more.
Microsurgical and Radiological Anatomy of Cerebral Sulci, Gyri, and Ventricles: The Rhoton-de Oliveira Course for Surgical Applications
Nov. 13-15, 2019; Jacksonville, Fla.
Complex Endoscopic Endonasal Surgery of the Skull Base
Nov. 14-16, 2019; Pittsburgh
2019 New Frontiers in the Diagnosis and Management of Movement Disorders
Nov. 16, 2019; Chicago
9th World Congress of Neuroendoscopy
Nov. 21-24, 2019; Orlando, Fla.
Mayo Clinic Multidisciplinary Spine Care Conference 2019
Nov. 22-23, 2019; Amelia Island, Fla.