[MURG] Noninvasive EEG

[Joseph M. Graham Jr.]

Hello, murg,

EEGs can now record brainwaves without the need for electrodes to be inserted into the brain or even for them to be placed on the scalp. The figure shows a brainwave trace for periods when the eyes are open and when they are closed. The red regions respond to the alpha wave (eyes closed) at a frequency of around 9 Hz. (Courtesy University of Sussex).



Reported by: Harland et al., Applied Physics Letters, 21 October 2002


Associated Physics News Update



Best regards. 

Joseph M. Graham Jr.
neurohacker at vERIZON.net
2004-06-10