Miniature Telemetry System for Recording Neural Action Potential in Freely Behaving Rats

Abstract

A miniature telemetry system for recording neural action potential in freely behaving rats is described. Together with the using of surface-mounted devices (SMDs) and radio telemetric technology, the telemetric device is suitable for recording neural potential in freely behaving rats. The device includes a headstage (including a microelectrode and a high impedance preamplifier), a backstage (including a main amplifier, RC-filters, a FM telemeter), a FM receiver, an oscillograph which can store the wave of the signals and a computer which is used to analyse the wave of the signals. A detailed printed-circuit layout will allow the system to be easily duplicated. So it can be easily generalized in other neuroscientists who are not familiar with wireless-transmission technologies.