مقایسهٔ روش‌ها

	پلی‌سومنوگرافی	Focal Animal Sampling	نمونه‌برداری پویشی
حوزه	علوم دامپزشکی	علوم دامپزشکی	علوم دامپزشکی
خانواده	Process / pipeline	Process / pipeline	Process / pipeline
سال پیدایش	1953	1974	1974
پدیدآور	William Dement and Nathaniel Kleitman	Jeanne Altmann	Jeanne Altmann
نوع	Multi-channel Recording and Analysis	Behavioral Sampling Protocol	Group Behavioral Sampling
منبع بنیادین	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.	Altmann, J. (1974). Observational study of behavior: sampling methods. Behaviour, 49(3-4), 227-267.
نام‌های دیگر	PSG, sleep study, overnight monitoring	FAS, focal sampling, behavior recording	instantaneous sampling, scan observation, group sampling
مرتبط	3	3	3
خلاصه	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.	Focal Animal Sampling (FAS) is a systematic observational method in which an observer focuses on one individual animal at a time, recording its behavior continuously or at regular intervals for a fixed period. Introduced by Jeanne Altmann in 1974, FAS provides detailed, quantitative ethograms of individual behavior, making it essential for studying animal behavioral ecology, welfare, and responses to environmental changes.	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.