taVNS on Pupillary Response and Perceptual Learning

The Effect of Transcutaneous Auricular Vagal Nerve Stimulation (taVNS) on Pupillary Response and Perceptual Learning

This study has two parts. The study team will evaluate transcutaneous auricular vagal nerve stimulation (taVNS) and two sham settings during a passive task while measuring pupillary response. Second, the study team will assign either taVNS, sham, or no intervention during a go/no-go task and evaluate perceptual learning over three sessions which will also include measuring the pupillary response and electroencephalogram (EEG).

Inclusion Criteria:

• Healthy individuals 18 to 65
• Normal audiometric testing

Exclusion Criteria:

• Co-morbidities including cardiomyopathies, arrhythmias
• Implantable devices including vagal stimulators, pacemakers
• Presence of metallic implants
• Pregnancy