En español
NIDA

Menu

NIDA Notes Articles: Basic Science

NIDA Notes Category Graphic

Prefrontal Cortex Stimulation Stops Compulsive Drug Seeking in Rats

January 2014

Researchers have shut down laboratory rats’ compulsive cocaine seeking by stimulating an area of the animals’ prefrontal cortex. The finding raises the possibility that stimulating neurons in this brain area may weaken or break cocaine’s grip on the behavior of people who are addicted to the drug.

NIDA Notes Category Graphic

Prenatal Cocaine Exposure Increases Monkeys' Impulsivity Into Adulthood

July 2012

Prenatal drug exposure can have behavioral effects that last well into adulthood, according to two studies of adult monkeys prenatally exposed to cocaine. In the first study, drug-exposed monkeys exhibited less flexibility than controls in adjusting to changing circumstances; in the second study, drug-exposed males exhibited a greater preference than controls for having rewards right away, a sign of impulsivity.

NIDA Notes Category Graphic

Prenatal Nicotine Exposure May Damage Receptors That Influence Auditory Processing

April 2009

Reports on a series of animal experiments indicating that nicotine exposure during prenatal fetal development damages a set of receptors in the brain's auditory processing center.

NIDA Notes Category Graphic

Rare Glutamate Receptor Proliferates After Cocaine Withdrawal

December 2009

Reports findings that a rare neuroreceptor may be linked to the intensive cravings cocaine abusers experience during their first weeks of abstinence.

NIDA Notes Category Graphic

Rats Reared Alone Show ADHD Signs

December 2009

Describes an animal study showing that rats raised in isolation may prove useful in future studies exploring the neurobiology that links impulsivity and vulnerability to addiction.

NIDA Notes Category Graphic

Receptor Complexes Link Dopamine to Long-Term Neuronal Effects

October 2009

Reports on a discovery of previously unrecognized dopamine receptors in the brain that when triggered by drug abuse lead to potentially long-term neuronal effects.

NIDA Notes Category Graphic

Resting Brain Studies Shed New Light on Vulnerabilities

November 2011

Individuals with weak signaling in a nicotine-sensitive brain circuit were more vulnerable to nicotine dependence than those with stronger signaling, according to a study conducted while the subjects’ brains were in a resting state. A second resting-state study finds that the same circuit appears to mediate dependence associated with a genetic risk factor for smoking.

NIDA Notes Category Graphic

Sensory Aspects of Smoking May Counter Bad Mood, Craving

October 2009

Describes study findings revealing that the act of smoking, apart from actual or expected nicotine delivery, may soothe a smoker's negative mood.

NIDA Notes Category Graphic

Stimulants in “Bath Salts” Produce Effects Similar to MDMA

August 2013

Mephedrone and methylone, two stimulants commonly found in designer drugs such as “bath salts,” act on the brain much like MDMA (Ecstasy).

NIDA Notes Category Graphic

Stress Receptor Mediates Lifelong Consequences of Early Trauma

November 2012

NIDA-supported research suggests that glucocorticoid receptor levels during early brain development affect the hard wiring of neural circuits that shape an individual’s basic emotional makeup. In mice, overexpression of the glucocorticoid gene in the first weeks after birth increased anxiety and response to cocaine in adulthood. These findings may help researchers understand the genetic background and the developmental trajectory of addiction.

Pages

NIDA Notes

Tags

Drug Topics

Drugs of Abuse

Population Groups

Related Topics