The EEG detector takes in a previously amplified signal, filters out a specified frequency which triggers a 200ms TTL pulse. Scientists can use this to trigger optogenetic or brain stimulation whenever the particular brain wave occurs. The filter can be revised for specific frequencies. The output of the circuit is optically isolated from the input to ensure no ground loops.

SWR detector

Minimum Input voltage50mV amplified signal
(can be reduced)
Output200ms TTL
(can modify)
Power+5V/G/-5V up to +10V/G/-10V
Frequency range60HZ to 300Hz
Peak frequency detection150HZ
(can be modified)
ThresholdAdjustable voltage thresholding
Size3" X 6" X 2.5"