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Brain hemodynamic responses (BHR) of healthy subjects and migraineurs performing a breath holding task are measured by functional near-infrared spectroscopy (fNIRS) method. The response curves are deconvolved from a rectangular input function to yield the impulse response (IR) function of BHR which was then modeled by a summation of three gaussians. Our results show that the amplitude coef£cients estimated from IR of BHRs are approximately 350% and the dispersion coef£cients 145% higher for healthy subjects. These results con£rm the £ndings of several other researchers where a decrease in cerebral blood ¤ow has been shown for migraineurs during breath holding tasks.

Original publication

DOI

10.1109/IEMBS.2005.1616712

Type

Journal article

Journal

Conf Proc IEEE Eng Med Biol Soc

Publication Date

2005

Volume

2

Pages

1484 - 1487