In extracellular recording usually very small potentials in the µV range are measured. This requires high amplification and often also filtering.
npi’s range of extracellular amplifiers meet these requirements. They are available as desktop instruments, in a 19” rackmount cabinet or as module for the EPMS modular system. All npi extracellular amplifiers have high pass and low pass filter and gain up to 10000. They allow DC measurements and AC recordings in which offsets are cancelled automatically. Audio monitors and electrode resistance meters are available as well. The use of external power supplies and high quality electronics ensure low-noise recording of small signals.
- analog displays for potential
- variable gain up to 10k
- offset and capacity compensation
- tunable highpass/lowpass filters
Most systems are equipped with a small headstage with high impedance differential inputs to suppress noise and other distortions.