Protocol for inducing varying TBI severity in a mouse model using a closed-head, weight-drop, impact-induced acceleration mechanism

Animal models of traumatic brain injury (TBI) are critical for understanding its complex neuropathology. Here, we present a protocol to induce varying TBI severities in mice using a close-head, weight-drop model that includes an impact-induced acceleration mechanism. We describe steps for habituation with Neurological Severity Score (NSS) equipment, assessing NSS baseline, performing anesthesia and TBI, assessing NSS post injury, and analyzing data. This protocol requires no prior surgical intervention and is adaptable for rat studies. For complete details on the use and execution of this protocol, please refer to PhD Dissertation of Javier Allende Labastida¹ and Tang et al.²