Effect of environmental light on local blood flow of the human brain

Effect of environmental light on regional blood flow of the human brain - Light dark MRI of the human brain

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000051457

Enrollment

500

Registered

2023-06-30

Start date

2021-01-12

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

dementia

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: out-patients complaining of subjective or objective memory decline

Exclusion criteria

Exclusion criteria: Participants with cognitive decline due to organic pathology (stroke, brain tumors, brain injury, postoperative) were excluded .

Design outcomes

Primary

Measure	Time frame
Analysis of human brain function using 3D-pseudo-continuous arterial spin labeling and BOLD signals of functional MRI under light and dark conditions to find the statistically significant changes of brain functions.	—

Secondary

Measure	Time frame
BOLD signals change following the variable repetition time (TR).	—

Countries

Japan

Contacts

Public ContactHiroshi Nawashiro

Tokorozawa Central Hospital Department of Neurosurgery

hiroshinawashiro@yahoo.co.jp+81-4-2994-1265

Outcome results