Cover image: Figure 3 (A) Pathophysiology of Lambert-Eaton myasthenic syndrome (LEMS): normal neuromuscular junction. (B) Pathophysiology of LEMS: LEMS neuromuscular junction. Figure 2 Compound muscle action potential (CMAP) of adductor digiti minimi preexercise (A1). CMAP of adductor digiti minimi postexercise showing incremental response of more than 100% improvement (A2). CMAP, compound muscle action potential. Figure 1 Post-exercise facilitation of knee jerk and ankle jerk. (see Poh M, et al. pages 339, 340).