Benutzer:Mihi/tDCS: Unterschied zwischen den Versionen

(13 dazwischenliegende Versionen desselben Benutzers werden nicht angezeigt)

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== Project Log ==

[[User:Mihi]] has ordered some parts to play with tDCS -- ([[Benutzer Diskussion:Mihi|Diskussion]]) 00:15, 12. Dez. 2013 (CET)

[[User:Mihi]] has ordered some parts to play with tDCS --[[Benutzer:Mihi|Mihi]] ([[Benutzer Diskussion:Mihi|Diskussion]]) 00:15, 12. Dez. 2013 (CET)

Parts have Arrived, unpacked and put in my box - was hacking campaigns not brains that night.... --[[Benutzer:Mihi|Mihi]] ([[Benutzer Diskussion:Mihi|Diskussion]]) 09:13, 19. Dez. 2013 (CET)

Bought Sponges and Wire-mesh (pan cover) for the electrodes --[[Benutzer:Mihi|Mihi]] ([[Benutzer Diskussion:Mihi|Diskussion]]) 17:54, 20. Dez. 2013 (CET)

===First Session===

{|

|-

|Created a simple tDCS source- based on a LM334 (from the simple schematics directly linked below)

|[[Datei:TDCS-Breadboard.jpeg|400px|Created a simple tDCS source- based on a LM334 (from the simple schematics directly linked below)]]

|-

|Constructed super cheap and simple electrodes out of stainless steel mesh and thin sponges (the sewing machine didn't like it - so I just squeezed it together).

|[[Datei:Sponge-Electrode-v0.0.jpg|400px|A super-simple sponge electrode]]

|-

|Soaking sponges in 10g NaCL /1l H2O

|[[Datei:Soaking-sponges.jpg|400px|Soaking Sponges]]

|-

|Not sure whether this makes me look smarter (or feel smarter)...

|[[Datei:Apply-electrodes.jpg|400px|Applying Electrodes]]

|}

Created a simple DIY tDCS source - just breadboarded to try it out. Did a 15min session of 1mA (Anode around T3, Cathode above right eye) - except clear itching beneath the electrodes no marked effect that couldn't be placebo. Also [[Benutzer:Phantasus|Phantasus]] tried it out with the same itchy sensation. Let's see what happens if we do this more often... --[[Benutzer:Mihi|Mihi]] ([[Benutzer Diskussion:Mihi|Diskussion]]) 23:57, 20. Dez. 2013 (CET)

The day after - hard to say: slept in and had fabulous breakfast. Sun is shining there are many reasons to have a great mood. Also feel very focused. Had the urge to ride my bicycle for a while last night (freezing) and felt very awake. But had a good relaxing sleep. Let's see could all just be confirmation bias. --[[Benutzer:Mihi|Mihi]] ([[Benutzer Diskussion:Mihi|Diskussion]]) 13:48, 21. Dez. 2013 (CET)

Sewed the Electrodes - now placing them is less a question of pressing them together the right way..

[[Datei:Finished-Electrodes.jpg|400px|Finished Electrodes]]

Built a box yesterday but messed up the circuit while putting it on a proto-board - know the bug will fix, test and post pictures... --[[Benutzer:Mihi|Mihi]] ([[Benutzer Diskussion:Mihi|Diskussion]]) 18:04, 22. Dez. 2013 (CET)

===Second Session===

Finished the box and fixed the bug in the circuit. Tested it (also with an external ampere meter.) - See notes on testing below. Ran a second session of 15minutes 1mA. (same montage as before). --[[Benutzer:Mihi|Mihi]] ([[Benutzer Diskussion:Mihi|Diskussion]]) 11:44, 23. Dez. 2013 (CET)

[[Datei:Finished-Device.jpg|400px|Finished Device]]

[[Datei:Testing_a_DIY-tDCS_Device.jpg|400px|Testing the tDCS device]]

== Notes on Testing DIY tDCS Devices ==

Since you're building this on your own you might want to make sure the device works as expected. I test my device using:

* A range of resistors <1KOhm

* An external ampere meter.

I put the resistor and the ampere meter (serially) to where my head would be in the circuit then fire it up. I make sure the current is properly adjustable and the meter I have is the same as the external ampere meter. I switch resistors and try again.

Only after doing this I can be sure that the current is properly limited by the LM334 circuit.

== Useful Links ==

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*[https://nocko.se/2012/07/30/brain-zapping-is-fun/ more DIY]

*[http://imgur.com/a/CrzTG Very simple circuit]

== Literature ==

* '''Clinical Research with Transcranial Direct Current Stimulation (tDCS): Challenges and Future Directions''' (Brunoni et al. 2012) [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3270156/]

"As a tDCS device is easily built and inexpensive (contrary to TMS), it could also be used for

non-research and non-therapeutic objectives by lay people."

* '''The challenge of crafting policy for do-it-yourself brain stimulation''' (Fitz & Reiner 2013)[http://jme.bmj.com/content/early/2013/05/20/medethics-2013-101458.long]