Acute exposure to a 50 Hz magnetic field impairs consolidation of spatial memory in rats

This study was planned to evaluate the effect of an exposure to magnetic fields on consolidation and retrieval of hippocampus dependent spatial memory using a water maze. In Experiments 1 and 2, rats were trained in a hidden version (spatial) of water maze task with two blocks of four trials. The re...

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Veröffentlicht in:Neurobiology of learning and memory 2007-11, Vol.88 (4), p.387-392
Hauptverfasser: Jadidi, Majid, Firoozabadi, Seyed Mohammad, Rashidy-Pour, Ali, Sajadi, Ahmad Ali, Sadeghi, Hassan, Taherian, Abbas Ali
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Sprache:eng
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Zusammenfassung:This study was planned to evaluate the effect of an exposure to magnetic fields on consolidation and retrieval of hippocampus dependent spatial memory using a water maze. In Experiments 1 and 2, rats were trained in a hidden version (spatial) of water maze task with two blocks of four trials. The retention of spatial memory was evaluated 48 h later. Exposure to a 50 Hz 8 mT, but not 2 mT magnetic fields for 20 min immediately after training impaired retention performance. The same time exposure shortly before retention testing had no effect. In Experiment 3, rats were trained in a cued version of water maze with two blocks of four trials. Exposure to magnetic field at 8 mT for 20 min immediately after training did not impair retention performance. These findings indicate that acute exposure to a 50 Hz magnetic field at 8 mT for short time can impair consolidation of spatial memory.
ISSN:1074-7427
1095-9564
DOI:10.1016/j.nlm.2007.07.010