Recent reports have led to the hypothesis of a central nervous system involvement in myasthenia gravis (MG). As the central cholinergic system also plays an important role in sleep/wake rhythms and in the regulation of REM sleep, sleep perception and dreaming may be altered in MG patients. Seventeen consecutive patients with MG (mean age 49.5 +/- 13.6 years) and 14 healthy controls (mean age...