Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

CNS Depressants: Alcohol and Nicotine01:27

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...
CNS Stimulants: Cocaine, Amphetamines and Cannabinoids01:24

CNS Stimulants: Cocaine, Amphetamines and Cannabinoids

CNS stimulants, such as cocaine, amphetamines, and cannabinoids, have varying structures and mechanisms of action that lead to different therapeutic effects and side effects. Cocaine, with its molecular formula C17H21NO4, is a tropane alkaloid and a tertiary amino compound. It has two chemical forms: the hydrochloride salt and the "freebase." The former is in powder form, while the latter involves removing the hydrochloride salt to create a form that can be smoked. Cocaine exerts its effects by...
Chemotherapy-Induced Nausea and Vomiting: Cannabinoids01:21

Chemotherapy-Induced Nausea and Vomiting: Cannabinoids

Tetrahydrocannabinol (THC) is a phytocannabinoid that primarily interacts with the CB1 receptor, a type of G protein-coupled receptor (GPCR) predominantly in and around the chemoreceptor trigger zone (CTZ) and emetic center. THC also blocks the serotonin receptor activity in the dorsal vagal complex (DVC) by inhibiting serotonin release. THC exerts its anti-emetic effects through these interactions, which are beneficial for patients undergoing chemotherapy.
Two synthetic agonists of THC,...
An Overview of Psychoactive Drugs01:28

An Overview of Psychoactive Drugs

Psychoactive drugs impact brain function, influencing perception, mood, consciousness, cognition, and behavior. These substances are grouped based on their effects and the mechanisms by which they act.
Stimulants such as cocaine, amphetamines, and nicotine enhance brain activity, leading to increased alertness, attention, and energy. These drugs typically raise heart rate, blood pressure, and body temperature. While they can induce feelings of euphoria, their misuse can result in severe health...
Depressants01:28

Depressants

Depressant drugs, including alcohol and sedative-hypnotics, diminish central nervous system activity by enhancing the action of gamma-aminobutyric acid (GABA), a neurotransmitter that reduces brain activity and promotes relaxation. These substances can have various therapeutic uses but also pose significant risks, especially when misused or combined.
Alcohol is a common depressant that can induce a sense of relaxation and reduced inhibition at low doses. Contrary to its occasional...
Hallucinogens and Psychedelics01:27

Hallucinogens and Psychedelics

Hallucinogens are psychoactive substances that profoundly alter perceptual experiences, generating unreal visual and sensory images. Often referred to as psychedelic drugs — a term derived from the Greek words "psyche" (mind) and "delos" (revealing) — these substances include marijuana and lysergic acid diethylamide (LSD), among others. These drugs vary in intensity and effects.
Marijuana, derived from the dried leaves and flowers of the hemp plant, contains delta-9-tetrahydrocannabinol (THC)...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Suicide after psychedelic-assisted treatment in context.

Psychiatry research·2025
Same author

Ayahuasca's Antidepressant Effects Covary with Behavioral Activation as Well as Mindfulness.

Journal of psychoactive drugs·2019
Same author

Cannabis Expectancies for Sleep.

Journal of psychoactive drugs·2019
Same author

Participation as a leader in immersion weight loss treatment may benefit, not harm, young adult staff members.

Clinical obesity·2015
Same author

Positive and negative associations with alcohol and familial risk for alcoholism.

Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors·2001
Same author

Activation of alcohol expectancies in memory in relation to limb of the blood alcohol curve.

Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors·2001

Related Experiment Video

Updated: Jul 26, 2026

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
07:30

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study

Published on: August 18, 2020

Cannabis-induced Koro in Americans.

M Earleywine1

  • 1Department of Psychology, University of Southern California, Los Angeles, CA 90089-1061, USA.

Addiction (Abingdon, England)
|January 11, 2002
PubMed
Summary

Cannabis-induced Koro, a panic reaction, is not exclusive to Eastern cultures. It can affect Americans, influenced by prior knowledge, setting, and body image concerns, potentially reducing drug use.

Area of Science:

  • Psychiatry
  • Toxicology
  • Cultural Psychiatry

Background:

  • Koro, an acute panic disorder involving penile retraction perception, was historically viewed as culturally specific.
  • Cannabis-induced Koro has been documented, primarily in Indian populations.

Observation:

  • This study investigated cannabis-induced Koro in American individuals.
  • Case studies were employed due to the condition's rarity.

Findings:

  • Three Caucasian men (aged 22-26) with prior cannabis experience reported Koro symptoms after marijuana use.
  • Triggers included prior awareness of cannabis-induced Koro, novel settings, atypical usage, and body dysmorphia in two cases.
  • All affected individuals reduced cannabis consumption post-experience.

More Related Videos

Development of a Preclinical Inhalation Model to Test Vaporized Cannabis Distillates
06:09

Development of a Preclinical Inhalation Model to Test Vaporized Cannabis Distillates

Published on: May 30, 2025

Administration of Δ9-Tetrahydrocannabinol (THC) in Adolescent and Adult Mice
07:51

Administration of Δ9-Tetrahydrocannabinol (THC) in Adolescent and Adult Mice

Published on: August 1, 2025

Related Experiment Videos

Last Updated: Jul 26, 2026

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
07:30

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study

Published on: August 18, 2020

Development of a Preclinical Inhalation Model to Test Vaporized Cannabis Distillates
06:09

Development of a Preclinical Inhalation Model to Test Vaporized Cannabis Distillates

Published on: May 30, 2025

Administration of Δ9-Tetrahydrocannabinol (THC) in Adolescent and Adult Mice
07:51

Administration of Δ9-Tetrahydrocannabinol (THC) in Adolescent and Adult Mice

Published on: August 1, 2025

Implications:

  • Cannabis-induced Koro is not geographically or culturally restricted.
  • Symptom manifestation may involve an interplay of psychological factors (prior knowledge, body image) and situational variables.
  • Negative drug reactions, including Koro, can serve as a deterrent to substance use.