alexa Neural Tissues Filter Electromagnetic Fields: Investigating Regional Processing of Induced Current in Ex vivo Brain Specimens
ISSN: 0974-8369

Biology and Medicine
Open Access

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Research Article

Neural Tissues Filter Electromagnetic Fields: Investigating Regional Processing of Induced Current in Ex vivo Brain Specimens

Nicolas Rouleau* and Michael A Persinger

Biomolecular Sciences and Behavioural Neuroscience Programs, Laurentian University, Sudbury, Ontario, Canada

*Corresponding Author:
Nicolas Rouleau
Biomolecular Sciences and Behavioural Neuroscience Programs
Laurentian University, Sudbury, Ontario
Canada P3E 2C6
Tel: 705.675.1151 ext 4826
E-mail: [email protected]

Received Date: February 05, 2017; Accepted Date: March 06, 2017; Published Date: March 13, 2017

Citation: Rouleau N, Persinger MA (2017) Neural Tissues Filter Electromagnetic Fields: Investigating Regional Processing of Induced Current in Ex vivo Brain Specimens. Biol Med (Aligarh) 9: 392. doi:10.4172/0974-8369.1000392

Copyright: © 2017 Rouleau N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.



As has been demonstrated experimentally, the living brain responds to pulsatile electromagnetic fields. Our aim was to investigate the capacities of ex vivo neural tissue to process and filter induced current generated by naturally occurring and laboratory-controlled electromagnetic fields. Microvolt potentials within the chemically fixed postmortem brains were collected throughout the field exposures. During strong geomagnetic storms there was a significant increase in power spectra within the 7.5 Hz to 14 Hz range within the right but not the left parahippocampal gyrus compared to days with relatively quiet geomagnetic activity. This finding indicated that ambient electromagnetic fluctuations from natural sources were processed differentially as a function of subsections of the postmortem tissue. Exposing a whole, fixed human brain to two physiologically patterned magnetic fields that have been associated with powerful subjective experiences reported by hundreds of human volunteers in the laboratory setting elicited increased power within the 7.5 Hz to 20 Hz range. The effects required 10 to 20 s to emerge and were primarily represented within tissue subsections of the right amygdala and orbitofrontal gyri. Other fields such as simple sine-wave (20 Hz) patterns of comparable intensity (2 to 10 μT) did not elicit the same configuration of changes. The results indicate that neural tissues filter electromagnetic fields non-randomly.


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