Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats

BACKGROUND AND OBJECTIVE: Power lines and household electrical appliances (TV, computer, and hairdryer) emit extremely low-frequency magnetic field (ELF-MF) that can be damaging. As the exposure of these MF is increasing now days and important effect of MF on memory formation, in this study effects...

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Autores principales:	SH Babri, F Mirzaei Bavil, H Ebrahimi
Formato:	article
Lenguaje:	EN FA
Publicado:	Babol University of Medical Sciences 2010
Materias:	electromagnetic field memory retrieval rat Medicine R Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/43a4260a7795484898f6276c71e1b7ed
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spelling	oai:doaj.org-article:43a4260a7795484898f6276c71e1b7ed2021-11-10T09:00:30ZEffect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats1561-41072251-7170https://doaj.org/article/43a4260a7795484898f6276c71e1b7ed2010-08-01T00:00:00Zhttp://jbums.org/article-1-3626-en.htmlhttps://doaj.org/toc/1561-4107https://doaj.org/toc/2251-7170BACKGROUND AND OBJECTIVE: Power lines and household electrical appliances (TV, computer, and hairdryer) emit extremely low-frequency magnetic field (ELF-MF) that can be damaging. As the exposure of these MF is increasing now days and important effect of MF on memory formation, in this study effects of these fields on memory consolidation and retrieval in male rats were examined.METHODS: In this experimental study, 90 male Wistar rats were divided into nine groups. Control group was trained in shuttle box (passive avoidance box). Sham group was put in turn off MF immediately after training for 4 hrs. Four test groups of memory consolidation after training were exposed on MF for 1, 4, 6 and 8 hrs respectively. The rats were exposed on MF (50 Hz, 5mT). Three test groups of memory retrieval after testing, were exposed on MF (4 hrs) for 3, 4 and 5 days respectively and were tested again 24 hrs after the last exposure. In all of groups, the time of entrance from light to dark area was measured in shuttle box as” retention latency and compared.FINDINGS: In 4 test groups of memory consolidation, between first group that was exposed on MF for 1 hr (485± 76s), and control group (583±17s) difference was not significant (p<0.05) while in other groups that were exposed on MF for 4, 6, 8 hrs (303±17, 294±87, 191±72s) difference was significant (p<0.05). Between sham group (541± 58) and test group that was exposed on MF for 4 hrs (303±17) difference was significant (p<0.05). The results of 3 test groups of memory retrieval showed that there was not any significant difference between before (572±37, 580±54.8 and 585±51.4) and after (563±42, 545.2±54.8 and 548.6±51.4) exposing for 3, 4 and 5 days. CONCLUSION: Acute exposure on ELF-MF can acutely prevent from memory consolidation but had no effect on memory retrieval.SH Babri,F Mirzaei BavilH EbrahimiBabol University of Medical Sciencesarticleelectromagnetic fieldmemoryretrievalratMedicineRMedicine (General)R5-920ENFAMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul, Vol 12, Iss 3, Pp 12-18 (2010)
institution	DOAJ
collection	DOAJ
language	EN FA
topic	electromagnetic field memory retrieval rat Medicine R Medicine (General) R5-920
spellingShingle	electromagnetic field memory retrieval rat Medicine R Medicine (General) R5-920 SH Babri, F Mirzaei Bavil H Ebrahimi Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats
description	BACKGROUND AND OBJECTIVE: Power lines and household electrical appliances (TV, computer, and hairdryer) emit extremely low-frequency magnetic field (ELF-MF) that can be damaging. As the exposure of these MF is increasing now days and important effect of MF on memory formation, in this study effects of these fields on memory consolidation and retrieval in male rats were examined.METHODS: In this experimental study, 90 male Wistar rats were divided into nine groups. Control group was trained in shuttle box (passive avoidance box). Sham group was put in turn off MF immediately after training for 4 hrs. Four test groups of memory consolidation after training were exposed on MF for 1, 4, 6 and 8 hrs respectively. The rats were exposed on MF (50 Hz, 5mT). Three test groups of memory retrieval after testing, were exposed on MF (4 hrs) for 3, 4 and 5 days respectively and were tested again 24 hrs after the last exposure. In all of groups, the time of entrance from light to dark area was measured in shuttle box as” retention latency and compared.FINDINGS: In 4 test groups of memory consolidation, between first group that was exposed on MF for 1 hr (485± 76s), and control group (583±17s) difference was not significant (p<0.05) while in other groups that were exposed on MF for 4, 6, 8 hrs (303±17, 294±87, 191±72s) difference was significant (p<0.05). Between sham group (541± 58) and test group that was exposed on MF for 4 hrs (303±17) difference was significant (p<0.05). The results of 3 test groups of memory retrieval showed that there was not any significant difference between before (572±37, 580±54.8 and 585±51.4) and after (563±42, 545.2±54.8 and 548.6±51.4) exposing for 3, 4 and 5 days. CONCLUSION: Acute exposure on ELF-MF can acutely prevent from memory consolidation but had no effect on memory retrieval.
format	article
author	SH Babri, F Mirzaei Bavil H Ebrahimi
author_facet	SH Babri, F Mirzaei Bavil H Ebrahimi
author_sort	SH Babri,
title	Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats
title_short	Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats
title_full	Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats
title_fullStr	Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats
title_full_unstemmed	Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats
title_sort	effect of extremely low-frequency electromagnetic field (50 hz, 5mt) on memory consolidation and retrieval in male rats
publisher	Babol University of Medical Sciences
publishDate	2010
url	https://doaj.org/article/43a4260a7795484898f6276c71e1b7ed
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Effect of Extremely Low-Frequency Electromagnetic Field (50 Hz, 5mT) on Memory Consolidation and Retrieval in Male Rats

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