Two-channel amplifi er for electro-physiological experiments. The ampli fi ed signals from both channels can be displayed on a storage oscilloscope or with the help of the Bio-measurement interface connected to a computer. Gain and frequency response are dependent on the selected experiment: action and muscle potentials in live earthworms (Worm), electro-retinograms (ERG), electrocardiograms (ECG), electromyograms (EMG).
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