Auditory Brainstem Response (ABR) Wave V corresponds to which anatomical structure?
- A Inferior colliculus ✓
- B Cochlear nerve (distal)
- C Superior olivary complex
- D Lateral lemniscus
Correct answer: A. Inferior colliculus
Explanation
ABR waves represent sequential auditory brainstem generator sites: Wave I — cochlear nerve (distal), Wave II — cochlear nerve (proximal) / cochlear nucleus, Wave III — superior olivary complex, Wave IV — lateral lemniscus, Wave V — inferior colliculus. Wave V is the most robust and clinically important; its prolonged interpeak latency I–V indicates retrocochlear pathology such as acoustic neuroma.
Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.