nighttime alertness and performance nighttime alertness sleepiness
Conditions
Interventions
Light oscillating in intensity, with a period of 1-8 minutes.
Sponsors
Rijksuniversiteit Groningen
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: healthy men and women, aged 18-30y normal chronotype women using hormonal anticonception
Exclusion criteria
Exclusion criteria: short (9h) extreme early (MSFsc5.77h) chronic (psychiatric or somatic) disease sleep disorder eye complaints or eye surgery in the past (excluding use of contact lenses or glasses) use of chronic (photosensitizing) medication in 3 months prior to the start of the study regularly use of sleep medication or stimulating drugs colour blindness more than 3 glasses of alcohol on working days, and or the regularly use of drugs more than 8 caffinated drinks per day regularly napping (more than 2 times a week) shiftwork in 3 months prior to the start of the study and/or going out on more than two days per week until at least 7 am travelled across more than 1 timezone in the month prior to the start of the study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Performance, alertness and sleepiness | — |
Secondary
| Measure | Time frame |
|---|---|
| Skin temperature, salivary melatonin concentration, heart rate and electroencephalography EEG power in the delta and theta frequency bands. | — |
Countries
Netherlands
Outcome results
None listed