Glass microelectrodes are used for extra- or intracellular recordings. These have usually a high resistance of 5 to 10 G?.
ADInstruments' Bio Amps have an input impedance of 200 M? differential and therefore can only be used with low impedance metal electrodes. Glass electrodes require a high impedance differential amplifier, usually in combination with an active head stage.
For extracellular recordings one can use the Differential Amplifier with Active Headstage (DP-311), which can be connected directly to the PowerLab input. For intracellular recordings we recommend for example an Intracellular Recording System. For further information, please contact your local sales specialist or request a quote through our website.