Transcranial magnetic stimulation (TMS)

Anyone any info on the circuit designs used etc?

Here are some references off google in case anyone thinks it's xtal power mk2

http://www.psycom.net/depression.cen...nscranial.html
http://www.musc.edu/tmsmirror/intro/layintro.html
http://www.biomag.hus.fi/tms/
http://www.ai.mit.edu/projects/medic...rgery/tms.html
http://www1.elsevier.com/homepage/sa...c/rtms-inf.htm
http://www.nami-hc.org/transcranial_...timulation.htm
http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract
http://www.medterms.com/script/main/...ticlekey=25019
http://www.ncbi.nlm.nih.gov/entrez/q..._uids=10910346
http://www.biopsychiatry.com/reptran.htm
http://www.clinicaltrials.gov/ct/show/NCT00050128
http://www.icn.ucl.ac.uk/Experimenta...lation/TMS.htm

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

Dirk Bruere at Neopax wrote:

> Anyone any info on the circuit designs used etc?
>
> Here are some references off google in case anyone thinks it's xtal
> power mk2
>
> http://www.psycom.net/depression.cen...nscranial.html
> http://www.musc.edu/tmsmirror/intro/layintro.html
> http://www.biomag.hus.fi/tms/
> http://www.ai.mit.edu/projects/medic...rgery/tms.html
> http://www1.elsevier.com/homepage/sa...c/rtms-inf.htm
> http://www.nami-hc.org/transcranial_...timulation.htm
> http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract
>
> http://www.medterms.com/script/main/...ticlekey=25019
> http://www.ncbi.nlm.nih.gov/entrez/q..._uids=10910346
>
> http://www.biopsychiatry.com/reptran.htm
> http://www.clinicaltrials.gov/ct/show/NCT00050128
> http://www.icn.ucl.ac.uk/Experimenta...lation/TMS.htm

One other bit of info I have just come across:
"Engineering safety - TMS equipment operates at lethal voltages of up to 4 kV.
It is hence important not to keep coffee cups or ice bags on the stimulator. The
maximum energy in the capacitor is about 500 J, equal to dropping 100 kg from 50
cm on one's feet. An electrical engineer with experience of low-power
electronics only should keep his/her hands behind the back and ask a power
electronics expert to do the job."

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

It is definitely a real technology. I would not recommend it as a
do-it-yourself project. What if it induces a seizure?

mc wrote:

> It is definitely a real technology. I would not recommend it as a
> do-it-yourself project. What if it induces a seizure?

Well, dumping a few hundred joules in around a millisecond into a coil on the
head will certainly do something.
However, I'm more interested in the effects of much smaller fields, esp with
respect to temporal lobe stimulation.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
<(E-Mail Removed)> wrote:

>mc wrote:
>
>> It is definitely a real technology. I would not recommend it as a
>> do-it-yourself project. What if it induces a seizure?
>
>Well, dumping a few hundred joules in around a millisecond into a coil on the
>head will certainly do something.
>However, I'm more interested in the effects of much smaller fields, esp with
>respect to temporal lobe stimulation.

Same here. I wonder if there's a newsgroup for DIY experimenters? I
don't fancy experimenting on myself, but if others are up for it I'll
happily read their reports!

--

"What is now proved was once only imagin'd." - William Blake, 1793.

Paul Burridge wrote:

> On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
> <(E-Mail Removed)> wrote:
>
>
>>mc wrote:
>>
>>
>>>It is definitely a real technology. I would not recommend it as a
>>>do-it-yourself project. What if it induces a seizure?
>>
>>Well, dumping a few hundred joules in around a millisecond into a coil on the
>>head will certainly do something.
>>However, I'm more interested in the effects of much smaller fields, esp with
>>respect to temporal lobe stimulation.
>
>
> Same here. I wonder if there's a newsgroup for DIY experimenters? I
> don't fancy experimenting on myself, but if others are up for it I'll
> happily read their reports!

This is the 'hard stuff'
http://www.icn.ucl.ac.uk/Experimenta...lation/TMS.htm

The original stuff done by Persinger is particularly interesting and looks easy
to replicate
http://www.studiosra.it/news/persinger.pdf

Maybe something like this :-)
http://www.innerworlds.50megs.com/

Particularly, I'm interested in creating larger fields eg room sized
http://ghosts.monstrous.com/magnetic_fields.htm

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

Dirk Bruere at Neopax wrote:
> Paul Burridge wrote:
>
>> On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
>> <(E-Mail Removed)> wrote:
>>
>>
>>> mc wrote:
>>>
>>>
>>>> It is definitely a real technology. I would not recommend it as a
>>>> do-it-yourself project. What if it induces a seizure?
>>>
>>>
>>> Well, dumping a few hundred joules in around a millisecond into a
>>> coil on the head will certainly do something.
>>> However, I'm more interested in the effects of much smaller fields,
>>> esp with respect to temporal lobe stimulation.
>>
>>
>>
>> Same here. I wonder if there's a newsgroup for DIY experimenters? I
>> don't fancy experimenting on myself, but if others are up for it I'll
>> happily read their reports!
>
>
> This is the 'hard stuff'
> http://www.icn.ucl.ac.uk/Experimenta...lation/TMS.htm
>
>
> The original stuff done by Persinger is particularly interesting and
> looks easy to replicate
> http://www.studiosra.it/news/persinger.pdf
>
> Maybe something like this :-)
> http://www.innerworlds.50megs.com/
>
> Particularly, I'm interested in creating larger fields eg room sized
> http://ghosts.monstrous.com/magnetic_fields.htm
>
Following on, this also looks interesting
http://www.mindcontrolforums.com/mindnet/mn165.htm

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

Speaking of things happening with strong magnets ...
http://seattlepi.nwsource.com/local/207390_mri11.html


"Dirk Bruere at Neopax" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Dirk Bruere at Neopax wrote:
> > Paul Burridge wrote:
> >
> >> On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
> >> <(E-Mail Removed)> wrote:
> >>
> >>
> >>> mc wrote:
> >>>
> >>>
> >>>> It is definitely a real technology. I would not recommend it as a
> >>>> do-it-yourself project. What if it induces a seizure?
> >>>
> >>>
> >>> Well, dumping a few hundred joules in around a millisecond into a
> >>> coil on the head will certainly do something.
> >>> However, I'm more interested in the effects of much smaller fields,
> >>> esp with respect to temporal lobe stimulation.
> >>
> >>
> >>
> >> Same here. I wonder if there's a newsgroup for DIY experimenters? I
> >> don't fancy experimenting on myself, but if others are up for it I'll
> >> happily read their reports!
> >
> >
> > This is the 'hard stuff'
> >
http://www.icn.ucl.ac.uk/Experimenta...lation/TMS.htm
> >
> >
> > The original stuff done by Persinger is particularly interesting and
> > looks easy to replicate
> > http://www.studiosra.it/news/persinger.pdf
> >
> > Maybe something like this :-)
> > http://www.innerworlds.50megs.com/
> >
> > Particularly, I'm interested in creating larger fields eg room sized
> > http://ghosts.monstrous.com/magnetic_fields.htm
> >
> Following on, this also looks interesting
> http://www.mindcontrolforums.com/mindnet/mn165.htm
>
> --
> Dirk
>
> The Consensus:-
> The political party for the new millenium
> http://www.theconsensus.org