BioAmp Projects

• Hardware Note:
  The input/sensor plug included with the pill I got
  has three wires: red, black, and yellow.
  The yellow wire is common/ref/signal-gnd
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• Eye twitch (EOG):
  • Connected ear clip to ground, and two sensors to far right and far left of eyes per "horiz movement" config.
    Connected BioAmp output to Espotek to display on PC.
  • Indeed did see a very small signal when moving eyes to far right or far left,
    however there was significant 60 Hz noise on top of all.

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• ECG:
  • Connected probes per ECG diagram.
  • Connected bioAmp output to Espotek input.
    
    

    HB signal clearly there, but lots of noise...

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• EEG:
  • The complex waveform produced by the bioAmp EEG sensors is converted from time to frequency domain,
    giving a measure of how much of the total signal is in which of the various brainwave frequency bands.
    • Delta waves are the lowest frequency wave (1-4 Hz) and occur during deep sleep
    • Theta waves (4-8 Hz) usually occur during lighter sleep. They are associated with creativity
    • Alpha waves (8-12 Hz) are also associated with creativity, as well as a relaxed yet alert state of mind
    • Beta waves (13-30 Hz) are the most common waves. They are related to concentration and focus.
    • Gamma waves (> 30 Hz)

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eof