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Hemoencephalography training and regional infrared and EEG changes

November 29, 2005, 2:12 am
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Status: in Design

30 participants will be split into groups of nirHEG, pirHEG, and no HEG and have continuous EEG recorded while training differntially. Changes assessed through infrared imaging.

Recording from 64-channel SynAmps2 while performing infrared training through two means:
1. nirHEG (Toomim) near infrared Hemoencephalography: Infrared light is passed though the skull and then reabsorbed by optrodes. Oxygentated blood absorbs more of the infrared light, so the measure of difference is indicative of local metabolism perfusion dynamics.
2. pirHEG (Carmen) passive infrared Hemoencephalography: A local infrared imaging thermometer is placed over the head at FPz. It measures temperature in the frontal lobes as a measure of blood flow and patterns of perfusion dynamics.

Pre and Post-training infrared imaging of the head will be performed to identify regional metabolic activation linked to HEG. EEG and HEG regional and time course events (including threasholding) will be gathered and assessed for correlations.

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4 Comments

  1. jaygattis says:
    September 21, 2007 at 9:29 am

    I’m very interested in this study do you have any results yet? I’m considering whether to purchase nirHEG (toomin) or a pirHEG (carmen) for research on attention while driving under different conditions. Thank you, Jay

  2. Administrator says:
    September 21, 2007 at 9:47 am

    hi Jay,

    actually haven’t done this. i have worked with both pirHEG and nirHEG clincially though.. i like pirHEG better, but your milage may vary. when driving you are also likely to introduce muscle artifact in the forehead, which (while not as much of an issue as EEG) will cause some issues with the HEG signal.

    best,
    andrew

  3. jaygattis says:
    September 21, 2007 at 4:33 pm

    Okay so you like the pirHEG better… hmm. I was leaning towards nirHEG because intuitively it made sense to me that active IR sensing would be somehow better but you’ve got me intrigued. What do you like better about pirHEG?

    -J

  4. Administrator says:
    September 22, 2007 at 1:57 pm

    sending you an email directly :)

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