Perforated Patch Clamp Recordings in ex vivo Brain Slices from Adult Mice

Bio Protoc. 2023 Aug 20;13(16):e4741. doi: 10.21769/BioProtoc.4741.

Abstract

Intracellular signaling pathways directly and indirectly regulate neuronal activity. In cellular electrophysiological measurements with sharp electrodes or whole-cell patch clamp recordings, there is a great risk that these signaling pathways are disturbed, significantly altering the electrophysiological properties of the measured neurons. Perforated-patch clamp recordings circumvent this issue, allowing long-term electrophysiological recordings with minimized impairment of the intracellular milieu. Based on previous studies, we describe a superstition-free protocol that can be used to routinely perform perforated patch clamp recordings for current and voltage measurements.

Keywords: Brain slices; Current clamp; Electrophysiology; Perforated patch clamp; Voltage clamp.