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The chemosensory characterization of healthy volunteers.

The chemosensory characterization of healthy volunteers. - ChemChar

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00028496
Enrollment
400
Registered
2022-05-03
Start date
2022-05-15
Completion date
Unknown
Last updated
2025-10-06

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

Conditions

None

Interventions

Group 1: In the present project, different chemosensory functions as well as responses to chemosensory substances will be investigated: emotional evaluation, perceptual evaluation of chemosensory subs

Sponsors

Universitätsklinikum der RWTH Aachen
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 55 Years

Inclusion criteria

Inclusion criteria: from 18 to 55 years - Not taking any medication (antidepressants, neuroleptics) or drugs. - Normal temperature, proof of vaccinated or recovered status regarding COVID.19, or proof of a daily negative test regarding COVID.19.

Exclusion criteria

Exclusion criteria: - Women and men older than 55 - for women: Pregnancy and lactation - smoking - olfactory and respiratory dysfunctions (frequent nosebleeds or nosebleeds experienced within the last 3 days, chronic nasal diseases; upper respiratory tract infections, chronic rhinitis; pulmonary diseases (e.g., asthma, other pulmonary diseases) - diseases with CNS involvement, head injury (e.g. stroke, so-called cerebrovascular insufficiency, multiple sclerosis, traumatic brain injury) - previous operations on head, heart, vessels - metabolic diseases (e.g. diabetes mellitus, pheochromocytoma, hyper- or hypothyroidism) - history of psychiatric disorders (SKID light, BDI for diagnosis) - Other significant medical conditions (e.g., hepatic insufficiency, renal insufficiency, gastric or intestinal ulcers) - acute allergies to food odors and tastes, generally acute food allergies - ingestion of medications or drugs

Design outcomes

Primary

MeasureTime frame
The purpose of this study is to characterize a suitable subject sample for planned studies, as well as to optimize the stimuli used. The scents or flavors will not always be presented in the same order so that no order effect occurs. Because previous studies have reported that women and men could smell differently, we will study equal numbers of men and women to detect such an effect.

Secondary

MeasureTime frame
With the help of the proposed screening and pilot study protocol, it should be possible to perform a basal chemosensory characterization of 400 healthy subjects and to create suitable chemosensory stimuli. These subjects and stimuli will then be available for further research.

Countries

Germany

Contacts

Public ContactRea Rodriguez-Raecke

Universitätsklinikum RWTH Aachen

rrodriguez@ukaachen.de+49 241 80 37438

Outcome results

None listed

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