مقایسهٔ روش‌ها

	نمونه‌برداری پویشی	پلی‌سومنوگرافی
حوزه	علوم دامپزشکی	علوم دامپزشکی
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1974	1953
پدیدآور	Jeanne Altmann	William Dement and Nathaniel Kleitman
نوع	Group Behavioral Sampling	Multi-channel Recording and Analysis
منبع بنیادین	Altmann, J. (1974). Observational study of behavior: sampling methods. Behaviour, 49(3-4), 227-267.	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.
نام‌های دیگر	instantaneous sampling, scan observation, group sampling	PSG, sleep study, overnight monitoring
مرتبط	3	3
خلاصه	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.	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.