Editing Analog EEG Amp
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[[Image:Analog EEG Amp.jpg|thumb|right|300px|The analog EEG amp.]] | [[Image:Analog EEG Amp.jpg|thumb|right|300px|The analog EEG amp.]] | ||
This analog EEG amplifier was donated to Noisebridge a couple of years ago. It is a medical-grade amp, probably used for clinical monitoring purposes. Since we've currently only tested the output by looking at noise through the fairly rudimentary electrodes shown, we don't have a good idea, at present, of the signal quality, but it should be in reasonably good shape. Electrodes die quickly in EEG and amps usually live substantially longer, but it's definitely possible that some of the channels will have artifacts or noise issues. Probably it will still amplify EEG signal sufficiently well to serve as an actuator for other projects. | This analog EEG amplifier was donated to Noisebridge a couple of years ago. It is a medical-grade amp, probably used for clinical monitoring purposes. Since we've currently only tested the output by looking at noise through the fairly rudimentary electrodes shown, we don't have a good idea, at present, of the signal quality, but it should be in reasonably good shape. Electrodes die quickly in EEG and amps usually live substantially longer, but it's definitely possible that some of the channels will have artifacts or noise issues. Probably it will still amplify EEG signal sufficiently well to serve as an actuator for other projects. | ||
==Goals and Milestones== | ==Goals and Milestones== | ||
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#*Check high and low pass filters | #*Check high and low pass filters | ||
#*Connect a human with properly gelled electrodes and check to make sure blink artifacts are clearly visible in the amp signal. | #*Connect a human with properly gelled electrodes and check to make sure blink artifacts are clearly visible in the amp signal. | ||
#*Connect a human with properly gelled electrodes and check to make sure basic EEG signal comes through. | #*Connect a human with properly gelled electrodes and check to make sure basic EEG signal comes through. | ||
#**[http://en.wikipedia.org/wiki/Alpha_wave Alpha power] would be a good first test | #**[http://en.wikipedia.org/wiki/Alpha_wave Alpha power] would be a good first test | ||
#**We could also test the photic stimulator and do some [http://en.wikipedia.org/wiki/SSVEP SSVEP]. | #**We could also test the photic stimulator and do some [http://en.wikipedia.org/wiki/SSVEP SSVEP]. | ||
#Build and program a microcontroller that correctly interprets and digitizes the analog signal output. | #Build and program a microcontroller that correctly interprets and digitizes the analog signal output. | ||
#*The analog signal consists of both positive and negative voltages and we need both. | #*The analog signal consists of both positive and negative voltages and we need both. | ||
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#*I have been told this will require oscillators. Any specific proposals? --[[User:Hurtstotouchfire|Hurtstotouchfire]] 01:48, 12 May 2012 (UTC) | #*I have been told this will require oscillators. Any specific proposals? --[[User:Hurtstotouchfire|Hurtstotouchfire]] 01:48, 12 May 2012 (UTC) | ||
#Pipe digital signal into real time EEG software. | #Pipe digital signal into real time EEG software. | ||
#*Suggestions for software | #*Suggestions for software? Must run on linux. | ||