title: A refined switch-activated time monitor for the measurement of sleep-onset latency.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D011930:Reaction Time; D012064:Relaxation Therapy; D007319:Sleep Initiation and Maintenance Disorders / Q000523:psychology*; D012894:Sleep Stages