ANSI CTA 2052.1 pdf free download
ANSI CTA 2052.1 pdf free download.Definitions and Characteristics for Wearable Sleep Monitors.
3. Definitions, Indicators, and Calculations
A – General Terms Describing the Temporal Surrounding a Sleep Episode
This section defines terms describing a sleep episodes temporal surround. These are general terms related to the sleeper’s intention and the environment, because a person may be in bed without an intention to sleep leads to the distinction between these two elements. The main parameters related to the lime when individual is Attempting 10 Sleep (TATS) and the lime when the individual is In ed (TIB).
A. 1 (Elemental): TA TS Start Time
Primary Definition: Time that the individual is in bed and begins attempting to sleep.
Indicators: Indicators may include but are not limited to: self-declared intention to sleep (e.g., indicator
button on a device), closing of the eyes while an individual is in bed.
Alternative Definition: None.
A.2 (Elemental): TATS End Time
Primary Definition: Time that the individual is in bed and is no longer attempting to sleep.
Indicators: Indicators may include but are not limited to: self-declared intention to remain awake (e.g.,
indicator button on a device), increased motion/mobility for a certain amount of time, opening of the eyes.
Alternative Definition: None.
A.3 (Elemental): TIB Start Time
Primary Definition: The time that an individual gets into bed.
Indicators: Indicators may include but are not limited to: Self-declared status that an individual has gotten into bed, visual observation, sensors indicating an individual is horizontal, and bed or room sensors indicating that a person has gotten into bed.
Alternative Definition: In the laboratory this term is actually used to designate TATS Start Time. It is also sometimes called “Lights Out Time”.
A.4 (Elemental): TIB End Time
Primary Definition: The time that an individual gets out of bed.
Indicators: Indicators may include but are not limited to: Self-declared status that an individual has gotten out of bed, visual observation, sensors indicating an individual is not horizontal, and bed or room sensors indicating that a person has gotten out of bed.
Alternative Definition: Same as primary definition; however, in the laboratory this term is actually used to designate TATS End Time. It is also sometimes called “Lights On Time”.
A.5 (Derived) Total TATS Duration
Primary Definition: Total time duration that the individual is in bed and is attempting to sleep excluding
time in bed not intending to sleep (watching TV, reading a book, etc.).
Calculation: The amount of time from TATS Start Time to TATS End Time.
B. General Terms Describing Basic Features of Wakefulness and Sleep
Terminology in this section terminology used to describe events once there is an intention to sleep. Some of the terms in this section have both general and laboratory definitions. Terms such as “sleep” existed long before polysomnographic procedures were applied to investigate the neurophysiology, psychophysiology, and general physiology of sleep. These terms include (but are not limited to): Awake, asleep, and awakening from sleep. Additionally, other sleep measures can be derived from these parameters (e.g., total sleep time and number of awakening). This section defines such terms. It is worth noting that actigraphs, using accelerometers, usually worn on the wrist and resembling a wrist- watch, have long been used in sleep research. Sleep features commonly derived from actigraphic devices include: Total sleep period, total sleep time, sleep latency, sleep efficiency (or sleep maintenance), and awakening rate per hour. These actigraphic measures compare favorably with laboratory standards. Each actigraph differs with respect to their precision and accuracy and should be compared to a reference standard to determine its performance characteristic if it is being used as a clinical or medical device.NSI CTA 2052.1 pdf download.
