The Trigno™ Trigger Adapter is designed to allow researchers to sample 0 to ±5V signals from 3rd party lab devices alongside other Trigno™ sensors so that data from these other devices and systems can be compared with Trigno biofeedback data. The adapter is fitted with an industry-standard BNC connector and is tuned for sampling digital signals that can act as event markers. Optimal performance from the adapter is obtained with a low impedance signal source (i.e. “buffered” output source).