विधियों की तुलना करें

	पॉलीसोम्नोग्राफी	स्कैन सैंपलिंग
क्षेत्र	पशु चिकित्सा विज्ञान	पशु चिकित्सा विज्ञान
परिवार	Process / pipeline	Process / pipeline
उद्भव वर्ष	1953	1974
प्रवर्तक	William Dement and Nathaniel Kleitman	Jeanne Altmann
प्रकार	Multi-channel Recording and Analysis	Group Behavioral Sampling
मौलिक स्रोत	Rechtschaffen, A., & Kales, A. (1968). A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages in Human Subjects. National Institutes of Health Publication.	Altmann, J. (1974). Observational study of behavior: sampling methods. Behaviour, 49(3-4), 227-267.
उपनाम	PSG, sleep study, overnight monitoring	instantaneous sampling, scan observation, group sampling
संबंधित	3	3
सारांश	Polysomnography (PSG) is a comprehensive multi-channel physiological recording method that simultaneously records brain electrical activity, eye movements, muscle tone, respiratory effort, oxygen saturation, heart rate, and limb movements during sleep. First systematized by Rechtschaffen and Kales in 1968, polysomnography is the gold standard for diagnosing sleep disorders, characterizing sleep architecture, and assessing the quality and organization of sleep in humans and increasingly in veterinary species.	Scan Sampling (also called instantaneous sampling) is a behavioral observation method in which an observer records the state of all group members simultaneously at regular time intervals. Introduced alongside focal animal sampling by Jeanne Altmann in 1974, scan sampling is efficient for quantifying activity budgets and group-level behavioral patterns in multiple animals without the labor of focal observation.