Pilot studies on the influence of chronobiologically effective light during the day on parameters of vigilance, attention and responsiveness in healthy people

Pilot studies on the influence of chronobiologically effective light during the day on parameters of vigilance, attention and responsiveness in healthy people - Chronolite

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00035216

Enrollment

Registered

2025-01-09

Start date

2024-06-19

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy people

Interventions

Group 1: Application of chronobiologically effective light (E: 739 lx) on a single day at three time points for 1 hour each Group 2: Application of Standard light (E: 123 lx) on one single day at thre

Eligibility

Sex/Gender

All

Age

18 Years to 35 Years

Inclusion criteria

Inclusion criteria: - no occurence of sleep disorders requiring treatment - regular sleep/wake rhythm at least one week before the start of the study - no hormonal contraceptives

Exclusion criteria

Exclusion criteria: - participation in clinical pharmacology tests 4 weeks before the start of the study - drug use or alcohol abuse - known eye diseases - acute illnesses requiring treatment - chronic diseases of the cardiovascular system and neurological or psychiatric diseases - night shift work - extreme early or late chronotype

Design outcomes

Primary

Measure	Time frame
Test of Attentional Performance (TAP)	—

Secondary

Measure	Time frame
- Karolinska Sleepiness Scale (KSS) - Alpha Attenuation Test (AAT) - Heart Rate Variability (HRV) - Elektrodermal activity (EDA)	—

Countries

Germany

Contacts

Public ContactMartin Glos

Charité-Universitätsmedizin Berlin

ambulanz-schlafzentrum@charite.de+493045050

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026