Biological Effects of Hypomagnetic Field: Ground-Based Data for Space Exploration
Zheyuan Zhang1,2, Yanru Xue1,2, Jiancheng Yang1,2,3
1School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.
Bioelectromagnetics
|July 10, 2021
Summary
Exposure to hypomagnetic fields (HMF) in space negatively impacts animal and plant life, particularly the central nervous system. Further research is needed to understand and mitigate these effects for future space exploration.
Area of Science:
- Bioelectromagnetics
- Space Biology
- Environmental Health
Background:
- Human space exploration is advancing, with future missions targeting the Moon, Mars, and deep space.
- Astronauts in these environments will be exposed to hypomagnetic fields (HMF), significantly weaker than Earth's geomagnetic field.
- The health risks associated with HMF exposure are not well understood and often overlooked.
Purpose of the Study:
- To summarize existing literature on the biological effects of hypomagnetic fields (HMF).
- To analyze and quantify the magnitude of HMF's biological impact.
- To identify areas for future research regarding HMF exposure in space.
Main Methods:
- Literature review and synthesis of studies on HMF's biological effects.
- Calculation and analysis of the magnitude of observed effects.
- Identification of research gaps and future directions.
Main Results:
- Hypomagnetic fields (HMF) adversely affect multiple animal systems, with notable impacts on the central nervous system.
- HMF acts as a stressor, negatively influencing plant growth and reproduction.
- Combined exposure to HMF with other space factors like radiation and microgravity can have significant effects on organisms.
Conclusions:
- Hypomagnetic field (HMF) exposure poses potential risks to human health and biological systems.
- Further research is crucial to develop countermeasures against HMF's adverse effects.
- Investigating the combined effects of HMF with other space environmental factors and understanding the intensity-effect relationship are critical for astronaut safety.
More Related Videos
08:57Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT
Published on: March 3, 2023
2.1K
12:29Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
Published on: May 23, 2011
19.7K
Related Concept Videos
01:27Magnetic Fields
6.5K
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...
A magnetic field is defined by the force that a charged particle experiences...
6.5K
01:14Diamagnetic Shielding of Nuclei: Local Diamagnetic Current
1.0K
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
1.0K
01:23Atomic Nuclei: Nuclear Relaxation Processes
810
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.
810
01:23Magnetic Field due to Moving Charges
10.6K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
10.6K
01:24Energy In A Magnetic Field
2.4K
If a magnetic field is sustained, there must be a current in a closed circuit or loop, implying some energy has been spent in creating the field. If this energy is not dissipated via the circuit's resistance, it is stored in the field.
Take an ideal inductor with zero resistance. Although it's practically impossible, assume that the coil's resistance is so small that it is practically negligible. The loss of the field's energy to dissipate thermal energy (or heat) is thus...
Take an ideal inductor with zero resistance. Although it's practically impossible, assume that the coil's resistance is so small that it is practically negligible. The loss of the field's energy to dissipate thermal energy (or heat) is thus...
2.4K
01:27π Electron Effects on Chemical Shift: Overview
1.3K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.3K