Increased emergence of alpha activity over the left but not the right temporal lobe within a dark acoustic chamber: differential response of the left but not the right hemisphere to transcerebral magnetic fields

Persinger, Michael A.

doi:10.1016/s0167-8760(99)00069-0

Cited by 10 publications

(10 citation statements)

References 18 publications

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“…Experimentally applied and physiologically-patterned magnetic fields maintain right hemispheric alpha activity (Persinger, 1999a) and facilitate right hemispheric functions (Healey et al, 1996(Healey et al, , 1997Sandyk, 1995). Temporally complex and changing weak magnetic fields, more typical of geomagnetic patterns, entrain EEG activity after about 15 min .…”

Section: Introductionmentioning

confidence: 99%

Effects of geomagnetic activity and atmospheric power variations on quantitative measures of brain activity: Replication of the Azerbaijani studies

Mulligan

Hunter

Persinger

2010

Advances in Space Research

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Section: Introductionmentioning

confidence: 99%

Effects of geomagnetic activity and atmospheric power variations on quantitative measures of brain activity: Replication of the Azerbaijani studies

Mulligan

Hunter

Persinger

2010

Advances in Space Research

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“…Differential hemispheric effects have been shown for living brain. Applications of physiologically-patterned magnetic fields over the left or the right hemisphere produced differential electrophysiological effects within about 15 min [26]. The enhanced sensitivity of the right hemisphere, particularly within the temporal and parahippocampal regions, for geomagnetic activity has been reported by several researchers [6,27,28].…”

Section: Discussionmentioning

confidence: 78%

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

Rouleau¹,

Persinger²

2017

Biol Med (Aligarh)

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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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“…Instead, weak (~1 μT), physiologically-patterned magnetic fields are applied from arrays of solenoids arranged around the subject's head or across the two hemispheres at the level of the temporoparietal plane [26]. There is clear evidence that these weak magnetic fields penetrate cerebral space without any discernible attenuation [27].…”

Section: Noninvasive Methodologiesmentioning

confidence: 99%

“…All the subjects sat blindfolded within a comfortable chair within an acoustic chamber whose characteristics have been described [26,67]. The room was also a Faraday cage and reduced the local geomagnetic field to about half the usual intensity.…”

Section: Methodsmentioning

confidence: 99%

Potential production of Hughlings Jackson's “parasitic consciousness” by physiologically-patterned weak transcerebral magnetic fields: QEEG and source localization

Saroka

Persinger

2013

Epilepsy & Behavior

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Exotic experiences such as the sensing of another consciousness or the detachment of consciousness from the body are occasionally reported by individuals with partial seizures from a temporal lobe focus. The experiences display the characteristics of Hughlings Jackson's "parasitic consciousness". We have hypothesized that these experiences are encouraged by slight discrepancies in hemispheric activity that can be simulated by application of weak, physiologically-patterned magnetic fields across the cerebral hemispheres. Electroencephalographic and Low Resolution Electromagnetic Tomography (sLORETA) data revealed altered activity bands within specific regions within the cerebral cortices during these experiences. The clear changes in power of brain activity were discerned after consistent durations of exposure to specifically patterned weak magnetic fields. Millisecond range point durations were required. The technology may be useful to explore the subjective components associated with complex partial seizures.

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Increased emergence of alpha activity over the left but not the right temporal lobe within a dark acoustic chamber: differential response of the left but not the right hemisphere to transcerebral magnetic fields

Cited by 10 publications

References 18 publications

Effects of geomagnetic activity and atmospheric power variations on quantitative measures of brain activity: Replication of the Azerbaijani studies

Effects of geomagnetic activity and atmospheric power variations on quantitative measures of brain activity: Replication of the Azerbaijani studies

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

Potential production of Hughlings Jackson's “parasitic consciousness” by physiologically-patterned weak transcerebral magnetic fields: QEEG and source localization

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