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

Bright light therapy is primarily utilized in the treatment of circadian rhythm disorders. This approach works by exposing individuals to specific wavelengths of light to help reset or regulate their internal biological clock, which is essential for maintaining a healthy sleep-wake cycle. Circadian rhythm disorders, such as delayed sleep phase disorder or seasonal affective disorder, can significantly impact a person's sleep patterns and overall well-being, making light therapy a valuable intervention in reestablishing regular sleep patterns.

The other options, while related to sleep disturbances, do not typically benefit from bright light therapy. Sleep apnea is characterized by interruptions in breathing during sleep and is usually addressed through lifestyle changes, CPAP therapy, or surgical interventions rather than light exposure. Chronic insomnia, which refers to persistent difficulty in falling or staying asleep, often requires cognitive behavioral therapy or medication rather than light therapy alone. Nightmares, though unsettling, generally do not respond to light therapy; instead, they may be treated with approaches that involve relaxation techniques or addressing underlying psychological issues. Thus, bright light therapy is most effectively aligned with addressing the specific needs of circadian rhythm disorders.