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Related Concept Videos

Drug Dependence01:17

Drug Dependence

Medications are typically administered to achieve therapeutic effects. Some drugs can modify an individual's mood and perception, frequently resulting in various enjoyable experiences. However, this can result in drug dependency, a condition marked by continuous drug use despite potential negative consequences. Drug dependency primarily falls into two categories: psychological and physical dependence. Psychological dependence occurs when the pleasurable feelings induced by the drug...
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Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
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CNS Depressants: Alcohol and Nicotine

Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
Drugs Acting on Autonomic Ganglia: Stimulants01:23

Drugs Acting on Autonomic Ganglia: Stimulants


Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...
Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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Related Experiment Video

Updated: Jun 16, 2026

Creating Dynamic Images of Short-lived Dopamine Fluctuations with lp-ntPET: Dopamine Movies of Cigarette Smoking
14:21

Creating Dynamic Images of Short-lived Dopamine Fluctuations with lp-ntPET: Dopamine Movies of Cigarette Smoking

Published on: August 6, 2013

Real-time craving differences between black and white smokers.

Brian L Carter1, Megan M Paris, Cho Y Lam

  • 1University of Texas, M. D. Anderson Cancer Center, Houston, Texas, USA. bcarter@mdanderson.org

The American Journal on Addictions
|February 19, 2010
PubMed
Summary
This summary is machine-generated.

Black smokers experienced higher nicotine craving and cigarette enjoyment compared to White smokers. Ecological momentary assessment (EMA) revealed these racial differences in smoking experiences, impacting nicotine dependence understanding.

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Examination of Rapid Dopamine Dynamics with Fast Scan Cyclic Voltammetry During Intra-oral Tastant Administration in Awake Rats

Published on: August 12, 2015

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Last Updated: Jun 16, 2026

Creating Dynamic Images of Short-lived Dopamine Fluctuations with lp-ntPET: Dopamine Movies of Cigarette Smoking
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Published on: August 6, 2013

Examination of Rapid Dopamine Dynamics with Fast Scan Cyclic Voltammetry During Intra-oral Tastant Administration in Awake Rats
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Examination of Rapid Dopamine Dynamics with Fast Scan Cyclic Voltammetry During Intra-oral Tastant Administration in Awake Rats

Published on: August 12, 2015

Area of Science:

  • Addiction research
  • Psychology of smoking
  • Racial disparities in health

Background:

  • Nicotine dependence symptoms like craving may differ across racial groups.
  • Understanding these differences is crucial for tailored smoking cessation interventions.

Purpose of the Study:

  • To investigate racial differences in craving, mood, expectancy, and smoking enjoyment between Black and White smokers.
  • To explore the psychological factors influencing smoking behaviors in diverse populations.

Main Methods:

  • Utilized ecological momentary assessment (EMA) with personal digital assistants (PDAs) for real-time data collection.
  • Conducted multiple daily assessments in a naturalistic setting.

Main Results:

  • Black smokers reported significantly higher craving post-smoking and during random assessments.
  • Black smokers also reported greater enjoyment from smoking cigarettes.
  • No significant differences were observed in mood or expectancy between racial groups.

Conclusions:

  • Racial disparities exist in key psychological aspects of smoking, including craving and enjoyment.
  • Findings suggest genetic, sociological, and psychophysiological factors may underlie these differences.
  • Results have implications for refining smoking cessation strategies and future research directions.