Certified Polysomnographic Technician (CPSGT) Practice Exam 2025 - Free CPSGT Practice Questions and Study Guide

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What type of measurements does actigraphy primarily focus on to assess sleep quality?

Heart rate variability

Physical movement

Actigraphy primarily focuses on physical movement to assess sleep quality. This method involves the use of a wearable device that tracks movements over time, typically using accelerometers, to determine sleep patterns and disruptions. By analyzing the data collected, actigraphy can provide insights into the duration and quality of sleep, as well as differentiate between periods of activity and rest.

This approach is particularly valuable because it offers an objective measure of sleep-related activity without the need for more intrusive methods like polysomnography, making it suitable for home use. The ability to capture movements allows for the identification of sleep cycles and can help distinguish between sleep states based on the patterns of activity, enabling healthcare professionals to evaluate sleep behaviors effectively.

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Respiratory patterns

EEG activity

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