Transcranial magnetic stimulation (TMS)

Discussion in 'Electronic Design' started by Dirk Bruere at Neopax, Jan 5, 2005.

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  1. 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.central.transcranial.html
    > http://www.musc.edu/tmsmirror/intro/layintro.html
    > http://www.biomag.hus.fi/tms/
    > http://www.ai.mit.edu/projects/medical-vision/surgery/tms.html
    > http://www1.elsevier.com/homepage/sah/ifcn/doc/rtms-inf.htm
    > http://www.nami-hc.org/transcranial_magnetic_stimulation.htm
    > http://www.ncbi.nlm.nih.gov/entrez/...ve&db=PubMed&list_uids=10686266&dopt=Abstract
    >
    > http://www.medterms.com/script/main/art.asp?articlekey=25019
    > http://www.ncbi.nlm.nih.gov/entrez/...ve&db=PubMed&dopt=Abstract&list_uids=10910346
    >
    > http://www.biopsychiatry.com/reptran.htm
    > http://www.clinicaltrials.gov/ct/show/NCT00050128
    > http://www.icn.ucl.ac.uk/Experimental-Techniques/Transcranial-magnetic-stimulation/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
     
    Dirk Bruere at Neopax, Jan 5, 2005
    #2
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  2. Dirk Bruere at Neopax

    mc Guest

    It is definitely a real technology. I would not recommend it as a
    do-it-yourself project. What if it induces a seizure?
     
    mc, Jan 5, 2005
    #3
  3. 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
     
    Dirk Bruere at Neopax, Jan 6, 2005
    #4
  4. On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
    <> 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, Jan 6, 2005
    #5
  5. Paul Burridge wrote:

    > On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
    > <> 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/Experimental-Techniques/Transcranial-magnetic-stimulation/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, Jan 6, 2005
    #6
  6. Dirk Bruere at Neopax wrote:
    > Paul Burridge wrote:
    >
    >> On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
    >> <> 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/Experimental-Techniques/Transcranial-magnetic-stimulation/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
     
    Dirk Bruere at Neopax, Jan 12, 2005
    #7
  7. Dirk Bruere at Neopax

    Mike Fields Guest

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


    "Dirk Bruere at Neopax" <> wrote in message
    news:...
    > Dirk Bruere at Neopax wrote:
    > > Paul Burridge wrote:
    > >
    > >> On Thu, 06 Jan 2005 13:10:45 +0000, Dirk Bruere at Neopax
    > >> <> 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/Experimental-Techniques/Transcranial-magnetic-stimulation/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
     
    Mike Fields, Jan 13, 2005
    #8
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