Related Experiment Video

Updated: Jun 26, 2026

Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

[Modulation of cardiac rhythms in humans exposed to extremely weak alternating magnetic fields]

V V Lednev, N A Belova, A M Ermakov

    Biofizika
    |January 14, 2009
    PubMed

    More Related Videos

    Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice09:20

    Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice

    Published on: July 5, 2021

    Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging10:09

    Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

    Published on: September 12, 2012

    Related Concept Videos

    Magnetic Fields01:27

    Magnetic Fields

    A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
    A magnetic field is defined by the force that a charged particle experiences...
    Mechanism of Cardiac Arrhythmias01:28

    Mechanism of Cardiac Arrhythmias

    Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
    Atomic Nuclei: Nuclear Relaxation Processes01:23

    Atomic Nuclei: Nuclear Relaxation Processes

    In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis. This...