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Evoked Responses

Record and analyze auditory, visual and somatosensory evoked responses. The on-line averaging function allows the user to perform detailed evoked response studies. Average physiological evoked responses in synchronization with stimulus presentation. Remove background noise and extract the signal of interest with the on-line signal-averaging mode. The system can trigger a stimulator at the start of each averaging sweep, or an external stimulator can trigger the start of a new sweep. Set the length of the averaging sweep, the number of averages and the latency between averaging passes. Remove any stimulus artifact with the artifact rejection utility. Calculate the average and display the result in real time. Count and display the total number of averages, the number of averages left to complete the sequence, and the number rejected from the test. Display and overlap multiple responses for a quick comparison between subjects and trials. Use the averaging software for a range of evoked potential studies on humans and animals, such as visual (VER), somatosensory (SER) and auditory (AER) responses.

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Fundamentals of Physiological Data Recording

Basic principles of physiological data collection covers fundamentals of data collection and equipment configuration equipment to help you refine experiment protocols and avoid costly missteps. Frazer Findlay, CEO of BIOPAC, discusses common mistakes with physiology recording and shares his secrets for collecting great data. Topics include: How to prep a subject and where to place electrodes; Which type of electrodes work for different body signals; Analog to Digital Conversion; Sample rates (correct vs. incorrect); Filtering; and Scaling and calibration.
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