Posted by rod on August 25, 2003, at 9:09:02
In reply to Re: rTMS sucess, posted by linkadge on August 24, 2003, at 15:36:49
> Using a sinusoidal wave at 10hz.
>Did they at Harvard also used a sinusoidal wave?
I expected they used short pulses (peaks).> Used a computer, and an old amplifier. Using Goldwave sound software (has wave generator).
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> Telsa coil feild strength can be calculated using the voltage output of the amplifier (determined by the volume of amp) the coil length and diameter.
>Well, that would be an approximation of the magnetic flow density or magnetic field strength (they differ by a "constant" factor) *inside* the coil and is not representative for places outside the coil (your brain). BTW, Telsa is the unit for the magnetic flow density, magnetic field strength is Ampere/meter.
Do you have any numbers about the peak value of the magnetic flow density (Tesla), or just the magnetic flow (Weber)?
What kind of coil do they/you use? Whats the diameter?
I have seen some pictures in which the use 2 coils (looks like the part of a scissor, where you put your fingers into). Do you know if these 2 coils (if they are two) are negatively of positively coupled? (magnetic flow enters one coil from the top and enters the second from underneath, or both from the top?)
I beg you for giving me some numbers from the harvard studies, if you have some.
thanks
Roland
> If you are in the Ontario area, feel free to stop by, but I'll have to make up a waver :)
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poster:rod
thread:253579
URL: http://www.dr-bob.org/babble/20030823/msgs/253826.html