Illumination in Human Aging: Sleep and Mood Effects

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN69400161

Enrollment

Registered

2005-05-11

Start date

2004-02-01

Completion date

Unknown

Last updated

2015-01-13

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

Conditions

Depression and sleep disturbance Mental and Behavioural Disorders Depression

Interventions

One hour of bright green light treatment compared to one hour of dim red light treatment given within one hour of waking.

Eligibility

Inclusion criteria

Inclusion criteria: Human age 60-79 with no history of mania or diagnosis of bipolar disorder.

Exclusion criteria

Exclusion criteria: Not provided at time of registration

Design outcomes

Primary

Measure	Time frame
Mood scales, light recording, and wrist actigraphy	—

Secondary

Measure	Time frame
Not provided at time of registration	—

Countries

United States of America

Outcome results

None listed

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