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LI Y, ZHANG C, SONG T. Disturbance of the Magnetic Field Did Not Affect Spatial Memory. Physiol Res 2014; 63:377-85. [DOI: 10.33549/physiolres.932594] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Extremely low-frequency magnetic field (ELF-MF) has been suggested to influence the cognitive capability but this should be dynamically evaluated in a longitudinal study. Previous training can affect performance, but the influence under magnetic field is unclear. This study aims to evaluate the effects of previous training and ELF-MF exposure on learning and memory using the Morris water maze (MWM). Sprague-Dawley rats were subjected to MWM training, ELF-MF exposure (50 Hz, 100 µT), or ELF-MF exposure combined with MWM training for 90 days. Normal rats were used as controls. The MWM was used to test. The data show that the rats exposed to training and ELF-MF with training performed better on spatial acquisition when re-tested. However, during the probe trial the rats showed no change between the training phase and the test phase. Compared with the control group, the ELF-MF group showed no significant differences. These results confirm that previous training can improve the learning and memory capabilities regarding spatial acquisition in the MWM and this effect can last for at least 90 days. However, this improvement in learning and memory capabilities was not observed during the probe trial. Furthermore, ELF-MF exposure did not interfere with the improvement in learning and memory capabilities.
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Affiliation(s)
| | | | - T. SONG
- Beijing Key Laboratory of Bioelectromagnetism, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
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Fournier NM, Mach QH, Whissell PD, Persinger MA. Neurodevelopmental anomalies of the hippocampus in rats exposed to weak intensity complex magnetic fields throughout gestation. Int J Dev Neurosci 2012; 30:427-33. [DOI: 10.1016/j.ijdevneu.2012.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Revised: 07/21/2012] [Accepted: 07/22/2012] [Indexed: 11/30/2022] Open
Affiliation(s)
- Neil M. Fournier
- Laboratory of Molecular PsychiatryDepartment of PsychiatryYale University School of MedicineNew HavenCT06508USA
| | - Quoc Hao Mach
- Behavioural Neuroscience and Biomolecular Sciences ProgramDepartments of Psychology and BiologyLaurentian UniversitySudburyONP3E 2C6Canada
| | - Paul D. Whissell
- Institute of Medical ScienceUniversity of TorontoTorontoONM5S 1A8Canada
| | - Michael A. Persinger
- Behavioural Neuroscience and Biomolecular Sciences ProgramDepartments of Psychology and BiologyLaurentian UniversitySudburyONP3E 2C6Canada
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Brain Stimulation. From the editor-in-chief's desk. Brain Stimul 2010; 3:129-30. [PMID: 20633441 DOI: 10.1016/j.brs.2010.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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