open-rtms-list — Open-rTMS support and discussion

[Open-rtms-list] OK, groovy. Here's what all I've done vis a vis the list

[Joley B. <bro...@co...>]

I copied most of it and will a) put it into a zip file, in a somewhat
more readable style. There's readers like Dictator, RSVP readers, should
work for that. I refrained from copying spam.

What I did copy and is spam, I'll weed it out.

Came up with a few suggestions, one is that people getting their first
look at the project could open it in one of the many Linux "personal
wiki" browsers. VYM and such. View Your Mind. It can follow links
automatically. It might help. And it's really Artificial intelligence.
Which brings up using variants of Siri. Possible-y/n?

When I tried Ebay with the terms BioFeedback the intact systems anybody
was selling started in the high 3 digits. Which since I fix computers,
and there's lots of used interfaces. I noticed that the idea of just
using sound cards and amplifiers to power the magnets, is repeated in
the non-spam areas of the list. Doing a lot of "independent research"
with binaural and isochronic tones harvested mostly from youtube, some
of the list correspondents also mentioned that. So I'm following the
right trail at least. The flashing lights was done in the two
professional EEGs given to me... and the colors and flashing lights,
combined with sound, is done a lot in the hypnosis videos. Like the
e-dose ones. With a passive connection (am I saying that right?) where
the measurement of changes in brainwave pattern would use the output of
EEG. Which in my really brief introduction to the mechanics of it all, I
noticed there's a fair amount of warnings and concerns about actually
stimulating the brain through trans cranial signals. I can recall a time
when lobotomy and ECT were actually practiced, so I already have a
strong sense of caution about monkeying about with electrocuting my own
brain unsupervised.

I'm autistic and have seen some really stupid treatment options in the
50 years since being diagnosed.

Anyway, at least one correspondent asked about a zip file of the forum.
So I'll do that later today. It's 1 a.m. locally and I need to get my
beauty sleep. Or more like an aesthetic producing coma. I still have to
get up to speed on what's been done so far. I noticed at least two whole
years where the only posts were Spam. Somebody asked for information on
Bryan, and said his website had disappeared. He was a heavy contributor,
so I'll try my hand at locating him.

Again, the virtual reality seems a very safe and effective model to
achieve stimulation. 

Also, there's the Pineal stimulation research, Deepak Chopra gets a
little deep into that aspect.

Right now I'm gathering what hardware I can glean, and you're right,
there's a lot of really cool equipment sitting in storage rooms or being
sold as scrap. I haven't actually bought a desktop since 2000. I get
them free off craigslist or from my recycling. A huge bulk of research
in BioFeedback was done with computers with 8088 processors and 2 megs
of RAM apiece. It's a matter, really, of the I/O hardware is
"specialized" but only in the packaging. I saw a quote in (I think) this
forum where the magnetic coils were 79 cents apiece. If I bought the
exact same thing from a medical supply house it would more like 20
dollars apiece. There's a marketing saying "Honey would sell for a lot
less if we called it bee vomit". Which it actually is.

So right now I've just started into this. Hopefully as a contributor.

Re: [Open-rtms-list] Has anybody tried to use the "god helmet" configuration With 3D graphix like Cardboard? (Joley Brown)

[Jack D. <jac...@gm...>]

On Mon, Oct 3, 2016 at 12:04 PM, <
ope...@li...> wrote:

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> ----------------------------------------------------------------------
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> Message: 1
> Date: Mon, 03 Oct 2016 05:25:30 -0600
> From: Joley Brown <bro...@co...>
> Subject: [Open-rtms-list] Has anybody tried to use the "god helmet"
>         configuration With 3D graphix like Cardboard?
> To: ope...@li...
> Message-ID: <147...@co...>
> Content-Type: text/plain; charset="UTF-8"
>
> Because I got this far following links starting with hypnosis
> techniques. I intend to root my phone which is currently a glorified mp3
> player. The people who developed the "god helmet" use it defaulted to no
> visual input. Blacked out. And I don't have any idea as to what audio if
> any. Apparently sensory deprivation with EM frequency from 4 coils on
> each temple.
>
> Audio and video input could be supplied from the phone which is really a
> 2.6 gigahertz processor. It SEEMS that with root privileges and a
> non-Google operating system, like little debi or Kali, one could have a
> custom "god helmet" styled device. I believe it's called neurohacking.
>
> Which if moi meme sui try that I would a helluva lot sooner trust my own
> agenda. I also have an older VR unit called myvu and it's about 6 years
> old. The main point of all that is to have measured electro magnetic
> brain patterns in response to stimuli instead of sensory deprivation.
>
> Basically re-inventing biofeedback. Make it personal, make it
> inexpensive. AND, important to me, documented where I can access the
> information.
>
> I know biofeedback related equipment can be purchased, but not by me
> because I never have an extra thousand USD laying around to pay for it.
>
> So, back to the title line, how much if any prior art is there, using
> that type of i/o hardware configuration and open source?
>
>
>
>
> ------------------------------
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>

I've been out of the loop for a while and off the top of my head I'm not
aware of any.  My guess would be that there wouldn't be much academic
research as there would be so many variables involved that isolating
meaningful information would be almost impossible.

Bio-feedback equipment is way less than $1,000 USD these days.  Even
something like the emotiv EPOC that has 21 (?) EEG electrodes is under
$500.  Not to mention things like SpO2 sensors, galvanic skin response,
ECG, that can be done for under $100 with disposable sensors, an arduino or
propeller and maybe some front-end A/D converters.  Ebay is your
friend...well, maybe not, but it's a good place to find older equipment and
sensors for scrap price.  You could even get usable feedback with a
soundcard for your ADC if you're really frugal.

As far as "trust your own agenda", I see that carboard (and I jsut heard of
it with your post, so take this with a grain of salt, but...) "By using
this app you agree to be bound by our Google Terms of Service (Google ToS,
http://www.google.com/accounts/TOS), Googles general Privacy Policy (
http://www.google.com/intl/en/policies/privacy/), and the additional terms
below. This app is a Service as defined in the Google ToS and the terms
regarding software in our Services apply to your use of this app."  Just
saying...

It would be nice to have some more open information and discussion about
these things, but such is life.  My suggestion would be to either find a
wiki you can participate in or make your own, should be pretty cheap these
days, hosted dokuwiki is probably under $10/mo.  Otherwise, keep reading
and learning.  Keywords and filetype:pdf in the googles can lead to much
information.  Good luck and happy hacking!

=-Jack'D

[Open-rtms-list] Has anybody tried to use the "god helmet" configuration With 3D graphix like Cardboard?

[Joley B. <bro...@co...>]

Because I got this far following links starting with hypnosis
techniques. I intend to root my phone which is currently a glorified mp3
player. The people who developed the "god helmet" use it defaulted to no
visual input. Blacked out. And I don't have any idea as to what audio if
any. Apparently sensory deprivation with EM frequency from 4 coils on
each temple.

Audio and video input could be supplied from the phone which is really a
2.6 gigahertz processor. It SEEMS that with root privileges and a
non-Google operating system, like little debi or Kali, one could have a
custom "god helmet" styled device. I believe it's called neurohacking.

Which if moi meme sui try that I would a helluva lot sooner trust my own
agenda. I also have an older VR unit called myvu and it's about 6 years
old. The main point of all that is to have measured electro magnetic
brain patterns in response to stimuli instead of sensory deprivation.

Basically re-inventing biofeedback. Make it personal, make it
inexpensive. AND, important to me, documented where I can access the
information. 
 
I know biofeedback related equipment can be purchased, but not by me
because I never have an extra thousand USD laying around to pay for it.

So, back to the title line, how much if any prior art is there, using
that type of i/o hardware configuration and open source?

Re: [Open-rtms-list] Pulse generator

[Tobias S. <tob...@tu...>]

Hi Luke,

I haven't thought about the exact waveform yet.
There is a paper by Eugene Izhikevich called "Simple Model of Spiking 
Neurons".
http://www.izhikevich.org/publications/spikes.pdf

In this paper he describes a model, that can be used to simulate 
different types of neurons.
It even has a small Matlab / Octave program, that works out of the box 
(i.e. no extra Matlab toolboxes are needed). This program simulates the 
interactions between 1000 randomly connected neurons.
It can be tweaked to simulate the reactions of the network to external 
stimuli as well. Just add the signal you want to test to the Thalamic 
input I (in mV).

If You know what the signal should look like, You can use Neural Cable 
Theory to calculate the magnetic fields needed.
http://www.scholarpedia.org/article/Neuronal_cable_theory

I You want to dive deep into Spiking Neuron Models:
ftp://ftp-sop.inria.fr/athena/Team/Olivier.Faugeras/Gerstner-Kistler.pdf

Many Regards,
    Tobias

Re: [Open-rtms-list] Pulsed TMS Architecture

[Tobias S. <tob...@tu...>]

Hi,

The design of the output boards is a simple current control via OP Amp:
http://open-rtms.sourceforge.net/documents/Concept.pdf
In figure 3 You see the boiled down schematic. The OP Amp in this design 
tries to get the current right and applies whatever voltage is necessary 
to drive the current to the coil.
Drawback: The feedback loop is not so happy with high frequency 
components in the current requests. In theory and in simulation this 
leads to oscillations. In the real-world setup I have here, it is well 
behaved (Probably the gain-frequency product of a real op amp is damping 
these oscillations.). A critically-dampened filter in the feedback loop 
would settle this problem.

To get an PWM output out of the propeller, the DAC drivers
https://sourceforge.net/p/open-rtms/svn/HEAD/tree/trunk/SignalGenerator/spin/EightChannelDAC.spin
would have to be replaced with a PWM driver.
https://www.parallax.com/sites/default/files/downloads/AN001-P8X32ACounters-v2.0.pdf

No hardware change required for up to 7 PWM channels (JP3 pin 2-5, JP4 
pin 4, JP5 pin 4, JP6 pin 4).
http://open-rtms.sourceforge.net/electronics/Schematic_3.png

For the power pulse generator, I would suggest, that we start from the 
desired effect and work out way backwards from there.

Many Regards,
    Tobias

On 11.07.2016 at 14:15 luke dyson wrote:
> I have not scrutinzed the DAC output board design much except to know 
> that we would be generating some arbitrary AM signals. This being said 
> the higher power version of this would almost certainly need to be 
> running highly non-linear to achieve the necessary levels at 
> reasonable efficiency and thermal overhead.
>
> Is the idea to change these arbitrary (read AM-like) signals into 
> appropriate PWM signals for some higher power switching mechanism and 
> then low-pass filter this output? Similar to a class-D audio amplifier.
>
> Also, has anyone given any thought to what type of pulse forming 
> network/power supply in general would be used here?
>
> Has it been given any thought as to what this design should consist of?
>
> From what I can tell you would need about 30W, at several hundred 
> volts, for one small pulse every second.
>
> Regards,
> Luke

[Open-rtms-list] Pulsed TMS Architecture

[luke d. <luk...@gm...>]

I have not scrutinzed the DAC output board design much except to know that
we would be generating some arbitrary AM signals. This being said the
higher power version of this would almost certainly need to be running
highly non-linear to achieve the necessary levels at reasonable efficiency
and thermal overhead.

Is the idea to change these arbitrary (read AM-like) signals into
appropriate PWM signals for some higher power switching mechanism and then
low-pass filter this output? Similar to a class-D audio amplifier.

Also, has anyone given any thought to what type of pulse forming
network/power supply in general would be used here?

Has it been given any thought as to what this design should consist of?

>From what I can tell you would need about 30W, at several hundred volts,
for one small pulse every second.

Regards,
Luke

[Open-rtms-list] home TMS devices

[martin s. <m_k...@ya...>]

Hello.  I've been interested in transcranial magnetic stimulation for depression for some time.  I'm trying to find out if there are any devices which one can use at home, as getting the treatment through doctors is very expensive.  Thank you.-- mks

Re: [Open-rtms-list] Bill Of Materials

[Eduardo A. <sch...@gm...>]

Hola  efectivamente  yo  he estado  fabricando un  componente  parecido ,   lo  tengo  en  tablero  y lo he probado,  he  estado buscando la  colaboración medica  a fin de aplicarlo  en  varios  pacientes.

 

Por  otra  parte  compre una  unidad mas  completa a fin de imitar  y  mejorar  con  mis  investigación. 

 

 

eduardo

 

De: Aidan Hoolachan [mailto:aj...@bu...] 
Enviado el: viernes, 18 de abril de 2014 03:07 p.m.
Para: ope...@li...
Asunto: [Open-rtms-list] Bill Of Materials

 

Hello,

 

I'm a college student trying to take advantage of my school's PCB fabrication capabilities before summer, and this looks like a really neat project. I'm curious if there is an available bill of materials for the V_0_2 board or if I have to pick it out of the schematic, any advice? Also, I haven't really been able to find any reviews of the device... I know it's in the early stages but has anybody had a successful experience using it?

 

Best,

Aidan

[Open-rtms-list] Bill Of Materials

[Aidan H. <aj...@bu...>]

Hello,

I'm a college student trying to take advantage of my school's PCB
fabrication capabilities before summer, and this looks like a really neat
project. I'm curious if there is an available bill of materials for the
V_0_2 board or if I have to pick it out of the schematic, any advice? Also,
I haven't really been able to find any reviews of the device... I know it's
in the early stages but has anybody had a successful experience using it?

Best,
Aidan

[Open-rtms-list] Subscription request

[4etznab <4e...@gm...>]

Thank you

[Open-rtms-list] electronics engeenier

[Alejandro S. B. <ale...@gm...>]

I offer you my free job, i´m electronic control & instrumentation expert

Re: [Open-rtms-list] tinkering

[Tobias S. <tob...@tu...>]

Hi!

Yes, there is hardware:
http://open-rtms.sourceforge.net/roadmap.html
On the bottom of that site is the section Electronics
In the Gallery You can find a photo of the hardware I put together.

Status of the project:
Parallax Propeller:
The objects for keyboard, mouse, VGA and communication are provided by 
the manufacturers.
I have written objects for graphics/text overlay and for sending out 
signals on 8 channels at precisely the same time.
What is missing is the generator object for "complex signals". 
Basically: What is meant by "complex signals"?
Nice-to-have would be a object to measure the resistance R and the 
inductance L of a connected coil.

Control software:
I have written a class for connecting to the Propellers build-in 
bootloader and uploading a program to it (and writing it to the EEPROM 
also).
Works for Linux. For Windows the control of the DTR-line is missing in 
the SerialPort class. This line is needed to reset the Propeller to get 
it into the bootloader. I will check that out, if I start the 
cross-compiling experiments.
I have written an FEM solver for magnetic fields around coils. I want to 
use it to calculate the fields inside the brain.
I am also porting & integrating an old (2005) program of mine to display 
tomography data. (A friend of mine got a scan of his brain on CD, when 
he volunteered in some medical experiments at his university. One of 
those if-I-poke-you-here-what-part-of-your-brain-gets-activated 
experiments.)

Missing:
The glue in between. What is the workflow of the program? Where do I 
click? What happens then?

For tDCS: I assume You want to imprint currents in the area of around 1 
uA. My crude measurement of the resistance temple to temple gives around 
1 MOhm. So simply take the electronics and change Rmeas to 1 MOhm. Now 
the circuit should be able to imprint currents of -2.5 uA to 2.5 uA. 
Possibly a little thought has to be spend on the OP-Amp selection and it 
might get tricky in a multi channel setup to get all the relative 
voltages right.

Am 01.03.2012 05:17, wrote James Braddock:
> Hello All,
> Just wanted to say hello and see if there has been any progress lately
> on this.
> I'm a software guy, but I want to tinker with some hardware and I've
> been curious to the validity of this.  Also I am edge seeking right
> now and want to give this field a try.
>
> I've also been looking at tDCS a little.
>
> Are there any hardware plans out there?
> I can fudge the software in place good enough, but hardware I'm no good.
>
> Thanks
> jb

[Open-rtms-list] tinkering

[James B. <bod...@gm...>]

Hello All,
Just wanted to say hello and see if there has been any progress lately
on this.
I'm a software guy, but I want to tinker with some hardware and I've
been curious to the validity of this.  Also I am edge seeking right
now and want to give this field a try.

I've also been looking at tDCS a little.

Are there any hardware plans out there?
I can fudge the software in place good enough, but hardware I'm no good.

Thanks
jb

Re: [Open-rtms-list] rtms project I will build one just give me a schematic/tips.

[Joshua P. <no...@ti...>]

I'm going to be very honest with you. While there IS genuine interest from 
some people, you're the first person to post to the mailing list in months... 
probably only the second person this year so far. I literally have no idea 
what is going on anymore in terms of participation or lack thereof. That being 
said, renewed interest would be great, welcome either way.

 - JP

On Tuesday, August 30, 2011 04:02:28 AM Ian G wrote:
> Hey is this project still alive? I'm  a kinetic sculptor and live in a
> little electronics/ fabrication shop. I've been tinkering with electronics
> my whole life from building computers to re-purposing components in
> discarded consumer electronics (plenty of good stuff in there) to building
> actual AC andDC circuits from schematics. Not so good at programming
> though. Not a question of good actually... I know my way around Max/msp
> and Arduino but none of the seriously useful code  like C+ or Unix are in
> my brain... Anyway I want to build one of these... can I take a look at
> your schematic? Also can you give me a list of the major components (not
> the individual ones like capacitors or transistors) just an overall
> summary of how this thing works exactly...
> Thank you so much for your generous work
> hope to hear from you soon

[Open-rtms-list] rtms project I will build one just give me a schematic/tips.

[Ian G <zin...@gm...>]

Hey is this project still alive? I'm  a kinetic sculptor and live in a
little electronics/ fabrication shop. I've been tinkering with electronics
my whole life from building computers to re-purposing components in
discarded consumer electronics (plenty of good stuff in there) to building
actual AC andDC circuits from schematics. Not so good at programming though.
Not a question of good actually... I know my way around Max/msp and Arduino
but none of the seriously useful code  like C+ or Unix are in my brain...
Anyway I want to build one of these... can I take a look at your schematic?
Also can you give me a list of the major components (not the individual ones
like capacitors or transistors) just an overall summary of how this thing
works exactly...
Thank you so much for your generous work
hope to hear from you soon

-- 
Ian J Garrison
Metal Fabrication/ Stop Motion Animation and Production
(612) 272-8321
Zin...@gm...
www.Wix.com/zinoncus/gallery <http://www.wix.com/zinoncus/gallery>

[Open-rtms-list] Inquiry

[Mixtress G. <djm...@gm...>]

Hello,
My name is Shannon Golden and I am very interested in Open rTMS. Please send
any info you can. Thanks!

Shannon Golden
1(760)547-3682

[Open-rtms-list] Want me one

[Nick M. <ma...@om...>]

Hi. I just learned about the "god helmet" this evening and decided I
want to build one.
It looks like you beat me to it! Hey, no problem. My envisaged design
was quite different to yours.

Are you still working on this? Perhaps you could help me. Descriptions
of the Koren helmet mention their complex waveforms, those chirp
sequences and amygdala-derived patterns. Do you know more about these
waveforms?

I need information about their bandwidth or highest frequency to
determine the cheapest dac style required. I imagine it is pretty low.
I am also hoping to use PWM but on an 8-bit AVR platform like the
Arduino.

Do you know if these patterns (or the like) are available anywhere to
download? Am I right in thinking you intend to generate these complex
signals on the PC?

Nick

Re: [Open-rtms-list] Hello Open rTMS folks!

[Tobias S. <tob...@tu...>]

Hi!

On 15.12.2010 23:59, NaK wrote:
> It seems active NOW and I actually started putting together a TMS 
> machine in October (not rTMS), it seems like the leaders of the group 
> are more interested in the psuedo-rTMS (weaker fields than industry 
> rTMS) along the lines of canadian researcher ???? someone's "god helmet".

Actually I want to split the project in three sub projects: A signal 
generator as a front-end, a low-power backend, a high-power back-end and 
a power pulse generator.

At first I just wanted to replicate the research of Persinger, which 
sounded quite interesting.
A chat with some guys from our physics department on magnetic alloys and 
the testing equipment showed me that it is quite feasible to get above 
one or two Tesla by using power amplifiers. That's why I did split it in 
one generator and two backends.
(I don't know, why sourceforge is not showing the CVS updates any more. 
Can someone check?)

> I've been thinking of putting a page up of what I've done so far, to 
> make the machine more efficient I would need some low ESR capacitors 
> (like from a pulsing laser or something along those lines)

Why not joining Your work into this project? There is an empty folder 
labelled "PowerPulseGenerator" anyway... You want to joint the project? 
Write me!

> Either way, the project has been pushed aside and if anyone is 
> interested in getting information on what I've done, ie. want ltSpice 
> simulation files (which are acting a bit weird, like triggering the 
> SCR or something the first half cycle of the input voltage)
> etc
> Feel free to AIM @ uberscientist, or email me personally at this address.
> -C.T
Regards,
    Tobias

[Open-rtms-list] Hello Open rTMS folks!

[NaK <ube...@gm...>]

It seems active NOW and I actually started putting together a TMS machine in
October (not rTMS), it seems like the leaders of the group are more
interested in the psuedo-rTMS (weaker fields than industry rTMS) along the
lines of canadian researcher ???? someone's "god helmet".
I've been thinking of putting a page up of what I've done so far, to make
the machine more efficient I would need some low ESR capacitors (like from a
pulsing laser or something along those lines)
Either way, the project has been pushed aside and if anyone is interested in
getting information on what I've done, ie. want ltSpice simulation files
(which are acting a bit weird, like triggering the SCR or something the
first half cycle of the input voltage)
etc
Feel free to AIM @ uberscientist, or email me personally at this address.
-C.T

Re: [Open-rtms-list] Is this list active?

[Ruben C. <rca...@ma...>]

Yep. I haven't received anything either.



On Dec 15, 2010, at 12:39 PM, Kenneth Gutierrez <ke...@gm...>  
wrote:

> I joined in October and have yet to receive a message. Perhaps my  
> settings are wrong or I need to check my spam folder.
> --- 
> --- 
> --- 
> ---------------------------------------------------------------------
> Lotusphere 2011
> Register now for Lotusphere 2011 and learn how
> to connect the dots, take your collaborative environment
> to the next level, and enter the era of Social Business.
> http://p.sf.net/sfu/lotusphere-d2d
> _______________________________________________
> Open-rtms-list mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/open-rtms-list

[Open-rtms-list] Is this list active?

[Kenneth G. <ke...@gm...>]

I joined in October and have yet to receive a message. Perhaps my settings
are wrong or I need to check my spam folder.

[Open-rtms-list] Analog driver type or design?

[Superkuh <sup...@gm...>]

The digital to analog converter has me curious as to what kind of high
voltage switching device and circuit you were thinking of using.  Are
you going to use SCR, IGBT, triggatron, spark gap? I didn't see it in
the schematics, related details, or mailing list archives.

- superkuh

Re: [Open-rtms-list] Electronics V0.9 are done

[Крокодил Г. <kro...@gm...>]

http://taizong.org/img/programming.jpg

Let's start the testing.

-- Gena


On Sun, Sep 26, 2010 at 5:35 AM, Tobias Schäfer <
tob...@tu...> wrote:

> http://home.tu-clausthal.de/~vttsc/OpenrTMS/images/pcb.jpg
>
> Let's start the programming.
>
> -- Toby
>
>
> ------------------------------------------------------------------------------
> Start uncovering the many advantages of virtual appliances
> and start using them to simplify application deployment and
> accelerate your shift to cloud computing.
> http://p.sf.net/sfu/novell-sfdev2dev
> _______________________________________________
> Open-rtms-list mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/open-rtms-list
>

[Open-rtms-list] Electronics V0.9 are done

[Tobias S. <tob...@tu...>]

http://home.tu-clausthal.de/~vttsc/OpenrTMS/images/pcb.jpg

Let's start the programming.

-- Toby

[Open-rtms-list] Hello

[benjamin shirley-q. <shi...@gm...>]

I'm just scrolling through the archives, trying to get myself up to speed
with this project, and i'm wondering if bryan bishop is still on the list?
He indicated he had a collection of papers, but his website seems to be down
:(

does anyone have a copy?

thanks,

benjamin