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Two compartmental models of EEG coherence and MRI biophysics

Published online by Cambridge University Press:  10 October 2000

R. W. Thatcher ,
J. F. Gomez-Molina ,
C. Biver ,
D. North ,
R. Curtin  and
R. W. Walker
R. W. Thatcher
Affiliation:
VA Medical Center, R&D – 151, Bay Pines, FL 33744 and Defense and Veterans Head Injury Program, Washington DC bobt2@gte.net
J. F. Gomez-Molina
Affiliation:
VA Medical Center, R&D – 151, Bay Pines, FL 33744 and Defense and Veterans Head Injury Program, Washington DC bobt2@gte.net
C. Biver
Affiliation:
VA Medical Center, R&D – 151, Bay Pines, FL 33744 and Defense and Veterans Head Injury Program, Washington DC bobt2@gte.net
D. North
Affiliation:
VA Medical Center, R&D – 151, Bay Pines, FL 33744 and Defense and Veterans Head Injury Program, Washington DC bobt2@gte.net
R. Curtin
Affiliation:
VA Medical Center, R&D – 151, Bay Pines, FL 33744 and Defense and Veterans Head Injury Program, Washington DC bobt2@gte.net
R. W. Walker
Affiliation:
VA Medical Center, R&D – 151, Bay Pines, FL 33744 and Defense and Veterans Head Injury Program, Washington DC bobt2@gte.net
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Abstract

Studies have shown that as MRI T2 relaxation time lengthens there is a shift toward more unbound or “free-water” and less partitioning of the protein/lipid molecules per unit volume. A shift toward less water partitioning or lengthened MRI T2 relaxation time is linearly related to reduced high frequency EEG amplitude, reduced short distance EEG coherence, increased long distance EEG coherence, and reduced cognitive functioning (Thatcher et al. 1998a; 1998b).

Type
Brief Report
Information
Behavioral and Brain Sciences , Volume 23 , Issue 3 , June 2000 , pp. 412
Copyright
© 2000 Cambridge University Press

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