What question did this study set out to answer?

This research aims to demonstrate the presence of weak magnetic fields produced by alpha-rhythm currents outside the human scalp.

August 23, 1968

Magnetoencephalography: Evidence of Magnetic Fields Produced by Alpha-Rhythm Currents

Key Points

This research aims to demonstrate the presence of weak magnetic fields produced by alpha-rhythm currents outside the human scalp.
Utilized a multilayer magnetically shielded chamber for accurate measurements.
Reduced background magnetic noise through signal-averaging techniques.
Measured fields near the scalp, estimating approximately 1 x 10(-9) gauss.
Detected weak alternating magnetic fields demonstrating left-right symmetry.
Averaging technique highlighted the distribution of alpha-rhythm currents.

Abstract

Weak alternating magnetic fields outside the human scalp, produced by alpha-rhythm currents, are demonstrated. Subject ard magnetic detector were housed in a multilayer magnetically shielded chamber. Background magnetic noise was reduced by signal-averaging. The fields near the scalp are about 1 x 10(-9) gauss (peak to peak). A course distribution shows left-right symmetry for the particular averaging technique used here.

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David Cohen

University of Connecticut

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University of Illinois Chicago

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Magnetoencephalography: Evidence of Magnetic Fields Produced by Alpha-Rhythm Currents

Key Points

Abstract

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Discussion

Authors

Journals

Actions

Institutions

References and Citations

Citation Network

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Discussion

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