Definition and Etiology of Jet Lag Jet lag, formally known as desynchronosis or circadian rhythm sleep disorder, is a temporary physiological condition resulting from rapid travel across multiple time zones. It represents a fundamental maladjustment of the body’s internal biological clock, the SCN, to the external local time. This misalignment occurs because the speed of […]
Introduction and Core Definition of Phase Shift The concept of the Phase Shift in psychology and chronobiology refers fundamentally to a significant disturbance or alteration in an organism’s established sleep-wake cycle, known as the diurnal or circadian rhythm. This phenomenon manifests clinically when an individual’s internal biological timing no longer aligns optimally with external environmental […]