Volume 15, Issue 1 (Paramedical Sciences and Military Health (Spring 2020) 2020)                   Paramedical Sciences and Military Health 2020, 15(1): 1-9 | Back to browse issues page

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1- Baqiyatallah University of Medical Science , nazarimahdi90@gmail.com
2- Baqiyatallah University of Medical Science
Abstract:   (217 Views)
Introduction: Low frequency electromagnetic waves have frequencies in the range of 300 KHz to 300 GHz and they are widely available in the environment. The biological effects of these waves are not fully understood on the human body and nervous system. The effects of low frequency electromagnetic waves on behavioural changes as well as the changes in the inner pyramidal neurons of the frontal lobe brain of the adult Wistar male rat were investigated in the present study.
 
Methods and Materials: In this experimental study, 20 rats were randomly divided into four groups. The first group was designated as the control group; moreover, experimental groups received 900, 1800 and 2450 MHz waves with the intensities of 2, 1 and 20 watts per kilogram, during one month and for 4 hours per day respectively. Elevated plus-maze test has been used in Behavioural tests. In addition, Golgi cox staining has been used in a hysteromorphometric test including the number of branches and dendritic spines of the inner pyramidal neurons of the frontal lobe.
 
Results: In experimental groups, Eelectromagnetic waves significantly reduced the number of entry and time spent in rats in the open arms of the Elevated plus-maze test compared to the control group (p ˂ 0.05).The results of historomorphometric study also indicated a significant reduction in the number of dendritic spines and branches of the inner pyramidal neurons of the frontal lobe of the rat brain in experimental groups compared to the control group (p ˂ 0.05)   
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Discussion and Conclusion: Low-frequency electromagnetic radiation caused behavioural changes and it increased the anxiety in rats. Furthermore, it caused damage to the inner pyramidal layer neurons of the frontal cortex in experimental groups.
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Type of Study: Research | Subject: full articles
Received: 2020/06/3 | Accepted: 2020/10/27 | Published: 2020/06/19