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

Hepatic Encephalopathy01:29

Hepatic Encephalopathy

53
DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic...
53
Alzheimer Disease l: Introduction01:29

Alzheimer Disease l: Introduction

21
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
21
Types of Toxins01:36

Types of Toxins

3.7K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
3.7K
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

3.4K
Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
Medical History
3.4K
Stress and Mental Health01:30

Stress and Mental Health

1.7K
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
1.7K
Dementia l: Introduction01:22

Dementia l: Introduction

35
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
35

You might also read

Related Articles

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

Sort by
Same author

Computer Vision Scoring of Figure Copy and Recall.

medRxiv : the preprint server for health sciences·2026
Same author

Deafblindness in Aotearoa, New Zealand: Prevalence and Equity Challenges From a Cross-Sectional Census Analysis.

Asia-Pacific journal of public health·2026
Same author

School absenteeism is an early indicator of suicidality in young people: a retrospective longitudinal matched case-control study using New Zealand integrated data infrastructure.

Journal of pediatric nursing·2026
Same author

Clinical Manifestations.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025
Same author

Clinical Manifestations.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025
Same author

Paramedic Echocardiography in Pulseless Electrical Activity Cardiac Arrest: An Education and Simulation Study.

Australasian journal of ultrasound in medicine·2025
Same journal

Effects of subchronic late-gestational nicotine exposure on postpartum maternal behavior in Wistar rats: An exploratory pilot study.

Neurotoxicology and teratology·2026
Same journal

Periconceptional and prenatal tobacco exposure and early externalizing behavior: Developmental pathways through maternal distress and language delay.

Neurotoxicology and teratology·2026
Same journal

Evidence of decreased neural efficiency supporting fluid reasoning abilities in children and adolescents chronically exposed to home radon.

Neurotoxicology and teratology·2026
Same journal

Spermatogenic timing, dose, and route of administration as determinants of paternal transmission of developmental neurotoxicity.

Neurotoxicology and teratology·2026
Same journal

Prenatal methamphetamine exposure increased addiction vulnerability through neural circuit dysfunction and epigenetic modifications in offspring.

Neurotoxicology and teratology·2026
Same journal

Postnatal environment differentially modulates neurodevelopmental outcomes following voluntary prenatal oxycodone exposure in rats.

Neurotoxicology and teratology·2026
See all related articles

Related Experiment Video

Updated: May 2, 2026

A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
03:55

A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria

Published on: June 27, 2022

4.2K

Chronic ambient hydrogen sulfide exposure and cognitive function.

Bruce R Reed1, Julian Crane2, Nick Garrett3

  • 1Department of Neurology, University of California, Davis, CA, USA; Alzheimer's Disease Center, Veterans Administration Northern California Health Care System, Martinez, CA, USA.

Neurotoxicology and Teratology
|February 20, 2014
PubMed
Summary
This summary is machine-generated.

This study found no negative cognitive effects from chronic, low-level exposure to hydrogen sulfide (H2S) gas in Rotorua residents. Cognitive function remained unaffected by environmental H2S levels.

Keywords:
Cognitive functionCross-sectional studyGeothermalHydrogen sulfideNeuropsychological testsNew Zealand

More Related Videos

Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests
04:00

Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests

Published on: September 13, 2024

1.3K
Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
07:30

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions

Published on: April 23, 2021

2.6K

Related Experiment Videos

Last Updated: May 2, 2026

A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
03:55

A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria

Published on: June 27, 2022

4.2K
Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests
04:00

Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests

Published on: September 13, 2024

1.3K
Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
07:30

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions

Published on: April 23, 2021

2.6K

Area of Science:

  • Environmental Health
  • Neuroscience
  • Toxicology

Background:

  • Chronic, low-level exposure to hydrogen sulfide (H2S) gas has been anecdotally linked to adverse cognitive outcomes.
  • The specific impact of ambient H2S on cognitive function in urban populations remains unclear.

Purpose of the Study:

  • To investigate the association between chronic, low-level hydrogen sulfide (H2S) exposure and cognitive function in an urban population.
  • To determine if environmental H2S levels in Rotorua, New Zealand, affect cognitive performance.

Main Methods:

  • 1637 adults (18-65 years) in Rotorua, New Zealand, were assessed for cognitive function.
  • Home and workplace H2S exposures were estimated using data from 2010/11 monitoring networks, calculating exposure metrics over 30 years.
  • Neuropsychological tests measured episodic memory, attention, motor skills, psychomotor speed, and mood, analyzed via multiple regression controlling for covariates.

Main Results:

  • No consistent association was found between H2S exposure and overall cognitive function.
  • Higher H2S exposure showed a minor association with faster simple reaction times.
  • Marginally better performance on the digit symbol test was observed with increased H2S exposure.

Conclusions:

  • Chronic exposure to ambient hydrogen sulfide (H2S) at levels found in Rotorua does not appear to impair cognitive function.
  • The study provides evidence against a link between environmental H2S and cognitive deficits in this population.