APA Dictionary of Psychology
phase shift
- a disruption of the normal sleep–wake cycle, with the result that the individual is alert during a usual sleeping period and sleepy when they should be alert. See circadian rhythm sleep disorder; disorders of the sleep–wake cycle schedule.
- a change in the diurnal or circadian rhythm brought about, for example, by changes in daylight exposure or changing time zones.
Updated on 11/15/2023
ADVERTISEMENT
Word of the Day
ADVERTISEMENT
ADVERTISEMENT