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Related Concept Videos

Drugs Acting on Autonomic Ganglia: Stimulants01:23

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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...
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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...
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Stimulants01:29

Stimulants

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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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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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Cholinergic Receptors: Nicotinic01:15

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Nicotinic receptors are ligand-gated ion channels that are activated by acetylcholine and nicotine. Upon activation, they cause a rapid increase in the permeability of cells to K+, Na+, and Ca2+, followed by depolarization and excitation. They are in the autonomic ganglia, skeletal neuromuscular junction, CNS, and adrenal medulla.
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Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists

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Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
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Related Experiment Video

Updated: Feb 19, 2026

Spectral Confocal Imaging of Fluorescently tagged Nicotinic Receptors in Knock-in Mice with Chronic Nicotine Administration
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Cognitive Effects of Nicotine: Recent Progress.

Gerald Valentine1,2, Mehmet Sofuoglu1,2

  • 1VA Connecticut Healthcare System, West Haven, CT, United States.

Current Neuropharmacology
|November 8, 2017
PubMed
Summary

Nicotine enhances cognitive functions like attention and memory, potentially contributing to tobacco use disorder (TUD). Targeting these cognitive effects may offer new avenues for TUD treatment, especially for individuals with cognitive deficits.

Keywords:
Smokingbehavioral pharmacologycognitionnAChRnicotinenicotinic acetylcholine receptorsmoking cessationtobacco use disorder.

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

  • Neuroscience
  • Psychology
  • Pharmacology

Background:

  • Cigarette smoking is a leading cause of preventable death.
  • Nicotine's role in tobacco use disorder (TUD) may extend beyond behavioral reinforcement to cognitive enhancement, particularly in individuals with cognitive deficits.

Purpose of the Study:

  • To review recent findings on nicotine's cognitive-enhancing effects.
  • To discuss the link between cognitive function and TUD vulnerability.
  • To explore the neurobiological underpinnings of nicotine's cognitive impact.

Main Methods:

  • Selective overview of recent research advances.
  • Discussion of cognitive function's role in TUD.
  • Overview of neurobiological mechanisms.

Main Results:

  • Nicotine demonstrates cognitive-enhancing effects in preclinical and human studies, notably improving attention, working memory, and episodic memory.
  • Specific nicotinic acetylcholine receptor (nAChR) subunits (α4, β2, α7) are implicated in these cognitive benefits.
  • Neuroimaging studies identify active brain regions and network dynamics related to nicotine's cognitive actions.

Conclusions:

  • Baseline cognitive performance predicts relapse in smoking cessation attempts.
  • Investigating cognitive enhancement as a TUD treatment strategy could yield more effective interventions.