[Neuroscience] Re: Reverse EEG
(by sebastien.vigneau from gmail.com)
Wed Sep 15 15:48:31 EST 2010
I am wondering if it would be possible to use time reversal signal
processing <http://en.wikipedia.org/wiki/Time_Reversal_Signal_Processing> for
the same purpose... Do you have ideas?
On Wed, Sep 15, 2010 at 10:14 AM, Infinite Monkey <reachanadi from gmail.com>wrote:
> On Sep 14, 4:57 am, Sudheendra Rao N R <sudhe... from gmail.com> wrote:
> > Hi,
> > Your EEG basically is AMPLIFIED electrical activity and to pass
> > back, you would have problems of penetration, tissue resistance.
> > However, on a gross scale Transcranial Magnetic Stimulation (TMS) does
> > u intend to do, but it uses magnetic field to create a perpendicular
> > electric field..
> > In that context, this is interesting.
> > 4. Transcranial stimulation has been used to alter cortical activity and
> > learning (Hallett, 2007; Floel and Cohen, 2007). In this sense,
> > electrical stimulation is 'reverse EEG'. In an intriguing study,
> > of slow-wave (0.75 Hz) transcranial electrical stimulation during early
> > slow-wave sleep was shown to improve declarative memory retention
> > et al., 2006). The subjects were stimulated with positive currents at
> > fronto-lateral locations. The critical link from this finding to the EEG
> > literature on global spatio-temporal waves is the finding by Massimini et
> > al. (2004) that slow wave activity in the EEG during sleep takes the form
> > a global spatio-temporal wave. The waves during slow-wave sleep originate
> > predominantly from pre-frontal regions.
> > here is the full linkhttp://www.jneurosci.org/cgi/eletters/27/11/3030
> > regards
> > sudheendra.
> > On Mon, Sep 13, 2010 at 4:40 PM, Infinite Monkey <reachan... from gmail.com
> > > Hi all,
> > > I do not have any idea about neuroscience as such but have interest in
> > > cognitive science in general.
> > > My question is the following :
> > > Is it possible to reverse the EEG?
> > > We can capture the current flows with EEG from various parts of the
> > > brain and then use them to control devices etc.
> > > But can we impose the same synaptic flows from external devices
> > > without having to probe the brain, maybe using some EM waves?
> > > Does anybody have any idea whether any research has been done on this
> > > and if yes, where?
> > > Thanks,
> > > Infinite Monkey.
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