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 Experiment Videos

Magnetic fields and stress: day-night differences.

M Kavaliers, K P Ossenkopp

    Progress in Neuro-Psychopharmacology & Biological Psychiatry
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

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

    Sort by
    Same author

    Estrogen and oxytocin receptors interplay in the medial amygdala to rapidly facilitate social recognition.

    Psychoneuroendocrinology·2025
    Same author

    Opioid Systems and Magnetic Field Effects in the Land Snail, Cepaea nemoralis.

    The Biological bulletin·2018
    Same author

    Factor analysis of open-field behavior in the rat (Rattus norvegicus): application of the three-way PARAFAC model to a longitudinal data set.

    Behavioural processes·2014
    Same author

    Inverse agonism of cannabinoid CB1 receptors potentiates LiCl-induced nausea in the conditioned gaping model in rats.

    British journal of pharmacology·2010
    Same author

    Social and sexual incentive properties of estrogen receptor alpha, estrogen receptor beta, or oxytocin knockout mice.

    Genes, brain, and behavior·2007
    Same author

    Involvement of estrogen receptor alpha, beta and oxytocin in social discrimination: A detailed behavioral analysis with knockout female mice.

    Genes, brain, and behavior·2006
    Same journal

    Maternal folic acid modulates neurotrophins and behavior in an animal schizophrenia model.

    Progress in neuro-psychopharmacology & biological psychiatry·2026
    Same journal

    Single Ayahuasca administration attenuates alcohol relapse and associated behavioral, neurochemical, and oxidative alterations in rats.

    Progress in neuro-psychopharmacology & biological psychiatry·2026
    Same journal

    Altered dorsal striatal subregional connectivity associated with distinct executive function deficits in first-episode, drug-naïve major depressive disorder: Evidence from functional connectivity and granger causality analysis.

    Progress in neuro-psychopharmacology & biological psychiatry·2026
    Same journal

    Chronic pain and stress: unravelling the common neuroinflammatory, immune and endocrine mechanisms for novel therapeutic approaches.

    Progress in neuro-psychopharmacology & biological psychiatry·2026
    Same journal

    Predicting anhedonia and negative cognitive processing changes after 8-week SSRIs treatment in depression from individual differential structural covariance network.

    Progress in neuro-psychopharmacology & biological psychiatry·2026
    Same journal

    Mapping intrinsic neural timescale alterations in major depressive disorder.

    Progress in neuro-psychopharmacology & biological psychiatry·2026
    See all related articles

    Rotating magnetic fields disrupt pain relief in mice by inhibiting opioid systems. These magnetic stimuli also eliminated daily rhythms in stress-induced analgesia, particularly during the night.

    Area of Science:

    • Neuroscience
    • Chronobiology
    • Biophysics

    Background:

    • Opioid analgesia plays a crucial role in the body's response to stress.
    • Day-night rhythms (circadian rhythms) influence various physiological processes, including pain perception.
    • Endogenous opioid systems are involved in modulating pain and stress responses.

    Purpose of the Study:

    • To investigate the effects of rotating magnetic fields on stress-induced opioid analgesia in mice.
    • To determine if magnetic field exposure alters the daily rhythm of analgesia.
    • To explore potential mechanisms underlying the observed effects.

    Main Methods:

    • Male CF-1 mice were exposed to a 0.5 Hz rotating magnetic field (1.5-90 G) for 30 minutes.
    • Warm water swim stress was used to induce analgesia.

    Related Experiment Videos

  • Naloxone, an opioid antagonist, was administered as a pre-treatment for comparison.
  • Inhibitory effects on analgesia were assessed during different times of the day and night.

    • Main Results:

    • Exposure to the rotating magnetic field significantly reduced warm water swim stress-induced opioid analgesia.
    • Naloxone pre-treatment showed comparable inhibitory effects to magnetic field exposure.
    • Magnetic stimuli abolished the day-night rhythm of stress-induced analgesia.
    • The most significant inhibitory effects of magnetic fields were observed during the dark period, coinciding with peak analgesia.

    Conclusions:

    • Rotating magnetic fields can significantly modulate the day-night rhythms of stress-induced endogenous opioid system activation.
    • Magnetic field exposure impacts the behavioral and physiological outcomes associated with opioid systems.
    • Potential mechanisms include effects on the pineal gland (nighttime) and alterations in divalent ion transport (daytime).