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. 2022 Nov 28:13:e52.
doi: 10.34172/jlms.2022.52. eCollection 2022.

The Effect of 2.45 GHz Electromagnetic Fields on Fear Memory Extinction in Male Rats

Zobeideh Dehghani  1 , Seyed Mohammad Mahdavi  1 , Amir Modarresi Chahardehi  2 , Vahid Mansouri  3 , Somayeh Jahani Sherafat  4
Affiliations

The Effect of 2.45 GHz Electromagnetic Fields on Fear Memory Extinction in Male Rats

Zobeideh Dehghani et al. J Lasers Med Sci. .

Abstract

Introduction: Fear memories are influenced by psychological and environmental variables. We evaluated the effect of 2.45 GHz microwave radiation on rats' fear learning and memory ability to determine the potential risks. The present study aimed to assess the impacts of corticosterone (CORT) levels on the consolidation and reconsolidation of fear conditioning memories. Methods: The rats were evaluated in contextual fear conditioning using foot shocks in both short-term (7 days) exposure and long-term (30 days) exposure. Young male Wistar rats were continually exposed to radio frequency electromagnetic field radiation for 5-6 weeks (1 h/day) with a frequency, power density, and pulse width of 2.45 GHz, 6.0 mW/cm2, and 2 ms, respectively. Several animals housed in identical conditions without exposure to radiation were monitored. Results: Based on the results, a significant increase and decrease in body weight and percentage of the freezing time were observed after the short-term group respectively. However, in the long term, we observed no significant difference in body weight, and the freezing time decreased substantially. Conclusion: As CORT levels were analyzed, long-term radiation might increase stress, which was associated with significant weight loss in rats.

Keywords: Animal model; Corticosterone; Electromagnetic field; Fear memory.

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Conflict of interest statement

The authors declare that there are no conflicts of interest regarding the publication of this paper.

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