Healthy adults, expected effect
Conditions
Interventions
Intervention type: Transcutaneous auricular vagus nerve stimulation
Stimulation site: tragus, earlobe (control condition)
Stimulation parameters: frequency 1-25 Hz, pulse width 100-500 microsecond
Sti
transcutaneous auricular vagus nerve stimulation, taVNS
Sponsors
Harada Tokiko
Ohira Hideki
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Healthy adults who do not meet the exclusion criteria 2. right-handed 3. Japanese native speakers 4. Those who wish to participate in the research, fully understand the content of the research and have obtained written consent
Exclusion criteria
Exclusion criteria: 1. Persons who have an interest in the principal investigator or co-investigator (e.g., graduate school students, students taking classes, etc.) 2. People with metal objects such as heart, nerve pacemakers, artery clips, etc. 3. People who have had a metal clip inserted due to an injury (because there is a possibility of residual metal in the body) 4. People who have a history of metal processing (because there is a possibility of residual metal in the body) 5. Those who are wearing orthodontic appliances or have metal implants (fillings and crowns are acceptable even with metal) 6. Persons wearing non-removable metal (eyelash extensions, nail parts, wigs, etc.) 7. people who have had brain surgery 8. People who have or have a history of mental illness 9. People with a history of claustrophobia or fear of the dark 10. Those who have a history of hernia, etc. and cannot maintain the same posture for a long time 11. Persons with visual impairment that interferes with daily life (excluding cases where the use of glasses or contact lenses does not interfere with daily life) or hearing impairment 12. People taking drugs (cold remedies, drugs that control the action of neurotransmitters, etc.) 13. People who cannot use both hands due to injury (because they will be pressing buttons in the experiment) 14. pregnant or possibly pregnant
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in brain activity measured by functional magnetic resonance imaging during transcutaneous auricular vagus nerve stimulation | — |
Secondary
| Measure | Time frame |
|---|---|
| Changes in heart rate and pupillary diameter during transcutaneous auricular vagus nerve stimulation | — |
Contacts
Public ContactTokiko Harada
Nagoya University
Outcome results
None listed