A-M Systems products

The Neuroprobe Amplifier Model 1600: Designed to surpass the exacting requirements of intracellular neurological studies and provide the research scientist with versatility, accuracy and ease of operation. The instrument consists of a high input impedance amplifier combined with current injection and bridge balance circuitry, allowing simultaneous stimulation and recording through the same electrode. The internal Dual-Function Transient Control and the DC balance Control assure extremely precise recordings during current injection without requiring an external bridge or a differential input oscilloscope. High-resolution ten-turn potentiometers are used for the DC Offset, DC balance, Current Injection, and Capacitance Compensation controls. Measure electrode resistance and adjust capacitance compensation using the internal 100 Hz test pulse. An easy to read Digital Panel Meter produces a highly accurate display of membrane potential, injected current or electrode resistance

The Model 1800 Microelectrode AC Amplifier is a two-channel, differential amplifier intended for extracellular recording and/or stimulating with high impedance metal microelectrodes in research and teaching applications. Ideal for single-cell spike recordings, it can also be used in a number of research or teaching applications requiring extracellular neurophysiological recording from excitable tissue such as nerve, muscle (EMG), EEG, EKG, and ERG recordings. Each channel of the Model 1800 contains a high-gain, low-noise differential amplifier stage followed by low-pass, high-pass, and notch filters. Three operating modes are available to accomodate recording, stimulating, and verification of electrode impedance. Record Mode offers three levels of signal gain (x100, x1,000, x10,000). Stimulus Mode allows the current passing through the electrode to be measured during stimulation.