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Influence of the transcutaneous vagus nerve stimulation on the pupillary light reflex

Influence of the transcutaneous vagus nerve stimulation on the pupillary light reflex

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00003316
Enrollment
35
Registered
2011-12-14
Start date
2011-05-31
Completion date
Unknown
Last updated
2025-04-07

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

Conditions

Healthy Volunteers

Interventions

Group 1: verum - adjustment of the ear electrode at the left ear, transcutaneous vagus nerve stimulation (t-VNS): frequency 25 Hz,adjust stimulation intensity above perception threshold and below pain

Sponsors

cerbomed GmbH
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 55 Years

Inclusion criteria

Inclusion criteria: healthy volunteers written informed consent form after volunteer information healthy in terms of medical history

Exclusion criteria

Exclusion criteria: anatomical and pathological abnormalities previous eye surgeries any medication (except contraceptives) participation in a clinical study within the last 4 weeks prior inclusion pregnant or breastfeeding women indications that the participant is expected not to comply with the clinical investigation plan (e.g. lacking willingness to cooperate)

Design outcomes

Primary

MeasureTime frame
parameters of the pupillary light reflex: initial pupil diameter, relative amplitude, constriction velocity time of measurement: befor t-VNS (PRE), during t-VNS (PERI) and after t-VNS (POST)

Secondary

MeasureTime frame
sensitive sensations (self-evaluation by the volunteer) screening for vegetative symptoms (self-evaluation by the volunteer) number of adverse events / incidents

Countries

Germany

Contacts

Public ContactAndreas Hertlep

cerbomed GmbH

Andreas.hartlep@cerbomed.com+49 9131 9202 76 0

Outcome results

None listed

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