The study explores how transcutaneous vagus nerve stimulation (tVNS) affects learning new movements in older adults. tVNS is a method where gentle electrical pulses are sent to the vagus nerve through the skin. In this study, participants will be put into two groups: one will receive real tVNS, and the other will receive a sham or fake version. Both groups will have sessions where they practice controlling their finger movements. The goal is to see if the real tVNS helps them learn these movements faster. The sessions will occur in a lab, and there will be no electrical stimulation during testing. Participants must be between 65-84 years old, right-handed, and in good health. They will have four visits as part of the study.

• Duration & Visits: Four lab sessions.
• Eligibility: Must be 65-84 years old, right-handed, healthy.
• Risks: Minor discomfort from ear electrodes, no electrical tests.