This chapter briefly reviews electrophysiological applications in experimental models of traumatic brain injury (TBI). The review was restricted to studies where rodents were used in one of the more common in vivo models of TBI and where electrophysiological recordings were then conducted either in vivo or in brain slices. This summary discussion is intended for researchers new to the topic of electrophysiology in TBI, who may be interested in knowing which specific recording techniques have been adapted in the various models. The chapter concludes with a protocol for recording compound action potentials in the corpus callosum of rats which have previously undergone fluid percussion TBI.