Schumann Signature.sav (6.42 MB)

Brain Schumann Resonance Signature

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posted on 13.11.2015 by Kevin Saroka, David Vares, Michael Persinger

Schumann Signature.sav
Dataset to recreate Figures 4 to 6.

This dataset contains several variables which refer to the root-mean-square of the rostral (Fp1,Fp2,F7,F3,Fz,F4,F8) middle (T3,C3,Cz,C4,T4) and caudal (T5,P3,Pz,P4,T6,O1,O2) aggregates of sensors for 237 EEG records.

rostralschumann=rms rostral sensors
middleschumann=rms middle sensors
caudalschumann=rms caudal sensors

schumann_intensity: refers to the grouping category used to discern differences in individual who display low (1) medium (2) and high (3) spectral schumann profiles

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The next set of data refers to inferences of current source density (uA/mm^2) for the left and right parahippocampal regions within the delta, theta, alpha-1, alpha-2, beta-1, beta-2, beta-3, and gamma bands.

Thus rightparahip_delta refers to right parahippocampal current source density in the delta band while leftparahip_gamma refers to left parahippocampal current source density in the gamma band.

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The next set of variables refers to the statistics computed within MapWin for the classic 4 microstate model described in the paper. There are 20 variables:

varexp: the average model variance explained for the subject

gfp1 to gfp4: the average number of gfp peaks contributing to class 1 through 4 (see Koenig et al, 2002, NeuroImage) for topographies
gfptot=total number of gfp peaks in the 16 second epoch

per1 to per4: average percentage of time occupied by class A (here indicated a 1) to class D (here indicated as 4).

occ1 to occ4: average occurence (in Hz) of microstate A (1), B(2), C(3), D(4) in the 16 second epoch
occtot=total number of microstate occurrences (Hz)

dur1 to dur4: the average durations of the various microstates (in msec) for A(1), B(2), C(3), D(4).

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Finally the last sets of variables are the discrete spectral densities for the rostral, middle and caudal RMS signals (FFT resolution=.03 Hz) for each subject.

The general anatomy is:

X(n)

where X refers to rostral (r), middle (m) or caudal (c) and (n) refers to frequency bin

Hence examples of how to use the variables are

c157- 4.71 Hz (157*.03) caudal RMS spectral density
r564- 16.92 Hz (564*.03) rostral RMS spectral density
m23- .069 Hz (23*.03) middle RMS spectral density

 

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