Fwd: [HEGtherapy] Distance from scalp to cortex

February 25, 2012

Forwarded from another list: of interest to nIR HEG users-- Van Deusenpvdtlc@...http://www.brain-trainer.com

USA 678 224 5895BR 47 3346 6235The Learning Curve, Inc.

---------- Forwarded message ----------From: Toomim <jtoomim@...>

Date: Sat, Feb 25, 2012 at 7:53 AMSubject: [HEGtherapy] Distance from scalp to cortexHEGtherapy

Ran into this poster, which seems to have some interesting information

on scalp-to-cortex distances. Unfortunately, they don't have the FPx

sites in their graphs, but still informative. It's worth noting that the

scalp-cortex distance tends to be high at the midline locations, and

much moreso in some individuals than in others, ranging from 12 mm to 23 mm.

I've noticed that in some people, midline measurements with NIRS result

in unusually high and variable measurements (such as above 150). My

guess is that they just have larger scalp-cortex distances than most

others, and if you run into someone like that, you should stick to the

sides. (I've said as much before; but now I have data.)

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