Bright light therapy and brain imaging: A randomized controlled study

Bright light therapy and brain imaging: A randomized controlled study - Bright light therapy and brain imaging

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019220

Enrollment

200

Registered

2015-10-05

Start date

2015-10-16

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Healthy adults Mood disorder

Interventions

High-intensity light irradiation to healthy adults: bright white light 10000 lux, 30 minutes in the morning, 28days, daily Light irradiation to healthy adults: dim red light 50 lux, 30 minutes in the

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy adults or affective disorder patient over the age of 20, agreement is obtained in writing with respect to participation in this study.

Exclusion criteria

Exclusion criteria: a) People who are suffering from serious physical illness. b)During pregnancy, lactating women. c)Subjects at discretion of the doctors who is judged inappropriate.

Design outcomes

Primary

Measure	Time frame
Morphometric and functional brain imaging Comparison of before and after intervention	—

Secondary

Measure	Time frame
mental state, temperament, circadian rhythm, cognition and executive function, BDNF, melatonin, lifestyle and so on	—

Countries

Japan

Contacts

Public ContactHirakawa Hirofumi Hirakawa Hirofumi

Oita university, faculty of medicine Department of neuropsychiatry

hira-hiro@oita-u.ac.jp097-586-5823

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026