[ EMF-Link Home
| Online Store
| Comments
| Up One Level ]
Hot Topics. General EMF Health Effects.
Effect of Magnetic Field Exposure on Spatial Learning in the Rat
Last modified on:
Thursday, November 06, 2008 11:39:14
Copyright © 1994-2008, Information Ventures, Inc.
The author examined the ability of a 60-Hz magnetic field to induce spatial learning deficits in rats and examined the role of physostigmine, a cholinergic agonist, in the process. Male Sprague-Dawley rats were trained to perform a food retrieval task in a maze. Before each training session, the rats were exposed to a 0.75-mT magnetic field for 45 minutes using a Helmholtz coil system. Control rats were sham exposed. Magnetic field-exposed animals made significantly more errors during the ten sessions than sham exposed rats. The amounts of time to complete a learning trial did not differ significantly between the exposed and sham exposed groups. Physostigmine injected before exposure or sham exposure to the magnetic field reversed the effect of the magnetic field on spatial learning. This indicated that the magnetic field-induced radial arm maze learning deficit reflects a deficiency in cholinergic transmission in the nervous system. [BENER 15093]
READER COMMENTS
May 15, 2001 - Hsing Fang
I did not see the strength of the magnetic field you used in your study. Is it important?
January 26, 1999 - Ariana Mina
I think your work is very interesting, but I wish to know if you know if there are differences in spatial navigation between males and females. I`m doing my thesis in this area with Wistar rats and I can`t find any documention about these differences under natural conditions.
November 23, 1998 - Terry Rogers
Thanks for your work in biomagnetic research. I am supposing that the south pole, or a south pole aggregate, was used on your rats. Duplicated research by Roy C. Davis resulted in similar discoveries.
May 12, 1997 - Prof. Dr. P. Semm (PSemm@aol.com)
Did you look for melatonin levels? [Editor's Note: The original paper makes no mention of measurements of melatonin levels.]
Copyright (c) 1994-2008, Information Ventures, Inc.
Mail us at: Customer-Service@infoventures.com
http://infoventures.com