Fwd: EEG While Meditating

---------- Forwarded message ----------
From: Niels Samuels <[email protected]>
Date: Sat, Jan 4, 2014 at 11:45 AM
Subject: Re: [Openeeg-list] EEG While Meditating
To: Chuck Davis <[email protected]>


Ok thats cool. I guess it does depend on the equipment one is using then.
Is this a matter of how well the electrodes are isolated from
interference?


On Fri, Jan 3, 2014 at 4:42 PM, Chuck Davis <[email protected]> wrote:

>
> This attachment says that one does not encounter such problems, with
> pROSHI's disentrainment approach to AVE . . .
>
> -----Original Message-----
> From: Niels Samuels
> Sent: Jan 3, 2014 5:47 AM
> To: "Discussion of EEG hardware, software, training protocols, NFB theory
> - for developers and users."
> Subject: Re: [Openeeg-list] EEG While Meditating
>
> Hi Stefan,
>
> I definitely had this problem with a Neurobit amp and a DAVID Pal ave
> device. Tried to do some SMR entrainment session, eeg recording the other
> day. The Neurobit lite rewarding signal completely maxed out at the flick
> of the switch of the AVE device. It continued to do so until I turned it
> off. Flick it back on, SMR signal maxed out again....and so on. So beware.
>
> Regards,
>
>
> On Thu, Jan 2, 2014 at 9:37 PM, Stefan Jung wrote:
>
> > Hi Michael
> >
> > What type of LightStone have you got, is it the blue one? I
> > reverse-engineered the blue one many years ago and know for a fact that
> it
> > uses DC to do the GSR, or the more modern term is SCL, measurement. But
> > there is a IOM interface that is more expensive and uses galvanic
> > isolation. It is possible that this IOM unit uses AC excitation for it's
> > GSR/SCL measurement.
> >
> > If you use DC, it shouldn't interfere with your EEG recordings, but if it
> > is AC you an possibly expect interference.
> >
> > AC excitation for GSR is obviously the best method to use but because it
> > is technically more difficult few people bother.
> >
> > Talking about interference, one should also be careful of using AVE
> > equipment with EEG. The sound is no problem because it runs typically at
> a
> > few 100Hz which is outside the EEG range. But what **CAN** be problematic
> > is running the wires of the LED goggles close to EEG wires. The LEDS are
> > normally pulsed at highish currents of perhaps 100mA or even more. They
> > are also pulsed in exactly these low brain-wave frequencies. The the
> > induced voltages lie exactly in the middle of the EEG spectrum.
> >
> > I don't say you can't use AVE with EEG amps, all I am saying there is the
> > potential for interference and one should check for this.
> >
> > Regards
> > Stefan
> >
> >
> >
> ------------------------------------------------------------------------------
> > Rapidly troubleshoot problems before they affect your business. Most IT
> > organizations don't have a clear picture of how application performance
> > affects their revenue. With AppDynamics, you get 100% visibility into
> your
> > Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics
> > Pro!
> >
> http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk
> > _______________________________________________
> > Openeeg-list mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/openeeg-list
> > Go to the above address to change your
> > subscription options, e.g unsubscribe.
> >
> >
>
>

------------------------------------------------------------------------------
Rapidly troubleshoot problems before they affect your business. Most IT 
organizations don't have a clear picture of how application performance 
affects their revenue. With AppDynamics, you get 100% visibility into your 
Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro!
http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk