Inflammation of temporomandibular joint increases neural activity in rat vestibular nucleus

► Acute inflammation of the temporomandibular joint was induced by injection of 10% formalin. ► Neural activity increase was assessed using c-Fos protein at the vestibular nucleus after 24 hours. ► Inflammation of TMJ increased ipsilateral vestibular nucleus activity. ► This result shows possible roles of TMJ inflammation in dizziness.