Yes, tungsten needles can be used for electrophysiology applications. Tungsten is a commonly used material for microelectrodes, including for intracellular recordings, extracellular recordings, and stimulation in electrophysiology experiments. Tungsten electrodes are desirable due to their high mechanical strength, good electrical conductivity, and high resistance to corrosion. They are also relatively easy to fabricate and can be coated with insulating materials to minimize any interference from surrounding tissues.
