INTENSITY²
Start here => What's your crime? Basic Discussion => Topic started by: Peter on October 23, 2008, 05:30:43 PM
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An electromagnet in figure-8 configuration, capable of providing 2 tesla on the coil surface in short pulses, with a zero-to-peak current rise time of 70-100 microseconds and a maximum duty cycle of 1hz or better, for transcranial neurostimulatory fun (http://en.wikipedia.org/wiki/Transcranial_magnetic_stimulation). Anyone know if that would be a feasible DIY project?
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If you do, give me the full report afterwards. ;D
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I think you'll have to make your own...
Here's some equations to get you started:
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/indcur.html#c2
:thumbup:
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If you do, give me the full report afterwards. ;D
If he is still alive. :o
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I'm experimenting with direct electric stimulation at the moment, since it's easy to do. Right now I'm using a 20V source and 10K of resistors to pass 1.45mA through my left prefrontal cortex. I might post pics later, but the USB ports on my main comp are out of action, so I'll have to boot up my laptop to get at them.
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Is safety guaranteed?
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No, it's not. I already have several nasty burns.
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Maybe you could use some sort of gel? When I had an EEG they used gel on my scalp. My hair was a mess afterwards.
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Maybe you could use some sort of gel? When I had an EEG they used gel on my scalp. My hair was a mess afterwards.
A gel might help; I think I have some gelatine in the kitchen. My last attempt at electrode design was to spread the current out over a larger area by using a large, flat wad of cotton wool soaked in saline, with a backing of aluminium foil, but the crocodile clip I had attached to it got pressed into it by the bubblewrap I used to bind it to my arm, producing a path of low resistance so that most of the current passed through a small area and burned the underlying skin.
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Ouch.
Found some information on EEG gel but I don't know if it would be the sort you want or whether something from home would just as well.
"About the ELEFIX EEG Paste - 4 Pack
EEG Electrode paste, low impedance highly conductive gel, specially formulated to stick the electrodes on the skin without additional adhesive disks. Four 6oz. tubes tubes per package."
http://www.bio-medical.com/product_info.cfm?inventory__imodel=elefix&gclid=CKm678eDx5YCFSAUagodJVmczQ
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Part of the problem is that it wasn't an ouch, just a tingling itch, so I didn't know it was happening until I took the electrode off.
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Burns itch more than hurt at first, I agree. But if you scratch and pop the blister later on, it can sting a lot.
Have a look at this:
(http://www.technologyreview.com/files/21522/1108-ESSAY-B_x600.jpg)
I hope that image worked. It looks.... fluffy. The picture is from http://www.technologyreview.com/biomedicine/21462/
A new imaging method that offers an unprecedented view of complex neural structures could help explain the workings of the brain and shed light on neurological diseases.
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Neat; I wish I could get one of those for my brain. It looks like something a lot of good research could come from. When did you get an EEG done?
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I have had two. The first one I had - I can't remember the year - showed abnormality of the right temporal lobe. I had a SPECT scan after that and got a tentative diagnosis of Temporal Lobe Epilepsy.
The last one I had was in 2006, just before I had ECT.
Did you say you had burnt your arm? I thought you would have burnt your scalp.