AAET DEF Exam Questions and Detailed Answers

A-waves or Axon reflex Seen when using sub- maximal stimulation during the F-wave recording. Consistent in latency and amplitude and usually occurring before the F-wave. Thought to be a result of reinnervation of the nerve. Abduct Move away from the median plane Abductor digiti minimi (ADM or ADQ) Ulnar innervated muscle on the medial side of the little finger alongside the 5th metacarpal. The most superficial muscle in the hypothenar eminence. Commonly used when recording ulnar motor studies. Abductor digiti quinti pedis (ADQp) Medial plantar, thus tibial nerve, innervated muscle on the medial side of the foot below the navicular bone. Commonly used when recording tibial motor studies. Abductor pollicis brevis (APB) Median innervated muscle just medial to the 1st metacarpal bone. The most superficial muscle of the thenar eminence. Commonly used when recording median motor studies. Accessory peroneal nerve A branch of the superficial peroneal nerve that partly supplies the extensor digitorum brevis (EDB) in 18-22% of people. The EDB is normally innervated by the deep peroneal. The accessory peroneal nerve is seen when the peroneal amplitude, recording from the EDB, is larger when stimulating at the fibular head than when stimulating at the ankle. It can be confirmed by stimulating behind the lateral malleous, adding that amplitude to the ankle amplitude. The sum of which should closely equal the amplitude when stimulating at the fibular head. Acetylcholine The chemical transmitter in a neuromuscular junction Action potential Whenever a stimulus reached or exceeds threshold an action potential is generated propagating along a single axon.