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Detection of brain activation using oxygenation sensitive functional spectroscopy

✍ Scribed by J. Hennig; Th. Emst; O. Speck; G. Deuschl; E. Feifel

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
628 KB
Volume
31
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

A nonwater‐suppressed localized spectroscopy experiment using the PRESS‐sequence has been used to study the signal changes of the water resonance during cortical activation. Significant effects with an effect‐to‐noise ratio up to 50:1 for a single shot experiment have been observed upon photic stimulation. The exceedingly high signal‐to‐noise ratio of the experiment was used to demonstrate signal changes as low as 0.1% after electrical stimulation of the median nerve.

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