GELASMUS By N., Sam M.S. - 4 the spasmodic laughter of people with certain psychogenic disorders and brain diseases. It is a psychomotor seizure and is called gelastic epilepsy. GELASMUS: "Gelasmus is uncontrolled laughter." Related Psychology Terms CHILD PSYCHIATRY EPILEPSY (Etiology and Therapy) BRAIN WAVES (Electroencephalogram, EEG) BRAIN DISORDERS EPILEPSY (Symptoms and Types) ORGANICISM (Organic Viewpoint) PSYCHOPHYSIOLOGIC DISORDERS (GENERAL) CEREBRAL CORTEX ELECTROSHOCK THERAPY (Elec- troconvulsive Therapy; EST, ECT) Dissociative Identity Disorder Cite this page: N., Sam M.S., "GELASMUS," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/gelasmus/ (accessed June 25, 2022).