Clinical Research Directory

Inclusion Criteria: * Healthy young adults * Age range 18-25 years * Current or prior users of e-cigarettes Exclusion Criteria: Participants will be excluded from the study if they: * Have any rash, infection, swelling, cut, soreness, drug patch, surgical scar on the neck area * Have any implantable medical device in their body such as a pacemaker, hearing aid implant, or any other metallic/electronic device * Have any hearing or vision problems that are not corrected * Are pregnant or breastfeeding * Have any learning disabilities * Have a medical history of any of the following condition * Meningitis * Traumatic brain injury * Seizure * Syncope * Schizophrenia * Schizoaffective disorder * Bulimia (eating disorder) * Other serious neurological illness * Have a medical history of any of the following cardiac disorder * Carotid atherosclerosis or carotid artery disease * Cervical vagotomy * First degree atrioventricular block or prolonged QT interval * Are taking any medications for to treat hypertension, arrhythmias, or are on calcium channel blockers