An examination of the association between chronic sleep restriction and electrocortical arousal in college students.
Clin Neurophysiol
; 126(3): 549-57, 2015 Mar.
Article
in En
| MEDLINE
| ID: mdl-25043966
ABSTRACT
OBJECTIVE:
The deleterious neurocognitive effects of laboratory-controlled short-term sleep deprivation are well-known. The present study investigated neurocognitive changes arising from chronic sleep restriction outside the laboratory.METHODS:
Sleep patterns of 24 undergraduates were tracked via actigraphy across a 15-week semester. At the semester beginning, at a midpoint, and a week before finals, students performed the Psychomotor Vigilance Test (PVT) and cortical arousal was measured via event-related potentials (ERP) and resting state electroencephalography (EEG).RESULTS:
Average daily sleep decreased between Session 1 and Sessions 2 and 3. Calculated circadian rhythm measures indicated nighttime movement increased and sleep quality decreased from Sessions 1 and 2 to Session 3. Parallel to the sleep/activity measures, PVT reaction time increased between Session 1 and Sessions 2 and 3 and resting state alpha EEG reactivity magnitude and PVT-evoked P3 ERP amplitude decreased between Session 1 and Sessions 2 and 3. Cross-sectional regressions showed PVT reaction time was negatively associated with average daily sleep, alpha reactivity, and P3 changes; sleep/circadian measures were associated with alpha reactivity and/or P3 changes.CONCLUSIONS:
Small, but persistent sleep deficits reduced cortical arousal and impaired vigilant attention.SIGNIFICANCE:
Chronic sleep restriction impacts neurocognition in a manner similar to laboratory controlled sleep deprivation.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Arousal
/
Attention
/
Sleep Deprivation
/
Cerebral Cortex
/
Evoked Potentials
Type of study:
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Clin Neurophysiol
Journal subject:
NEUROLOGIA
/
PSICOFISIOLOGIA
Year:
2015
Document type:
Article