Figure 1.

The apparatus causing traumatic brain injury (TBI) in small-sized rodents.

(A) The TBI device which performs weight-drop method to produce closed head trauma in mice; (B) plastic round 3 mm-diameter tip; (C) position of mice on the platform; (D) location of the area of impact; (E) pedal can be pressed by hand or foot, releasing the rod and causing the impact onto exposed mouse skull; (F) the setting, i.e., the certain weight on certain height can be adjusted using a ruler and an electromagnetic lock.