Analysis of the effect of essential oil scent on cognitive function in a simulated bathroom environment

Analysis of effects of essential oil exposure on cognitive function in simulated bathing environment - Effects of essential oil exposure on cognitive function

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000038774

Enrollment

Registered

2019-12-03

Start date

2019-12-03

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 young adult

Interventions

Resting position(Only 20 minutes at a time) Put only the head in the enclosed space(Only 20 minutes at a time) Place only essential oil in the enclosed space(Only 20 minutes at a time, 1 ppm of 1,8-ci

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Adults with no abnormal olfaction

Exclusion criteria

Exclusion criteria: History of sinusitis or chronic illness

Design outcomes

Primary

Measure	Time frame
Paced Auditory Serial Addition test(Immediately after exposure to essential oil)	—

Secondary

Measure	Time frame
Miyake Memory test, 1 minute word recall task	—

Countries

Japan

Contacts

Public ContactJun-ichi Iiyama

Kumamoto Health Science University Department of Health Science

iiyama@kumamoto-hsu.ac.jp096-275-2111

Outcome results

None listed

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