Zapping the ear to tune the body? scientists probe inner sensations

This study explored whether a gentle electrical stimulation to the ear (transauricular vagal nerve stimulation) can change how healthy people sense signals from inside their bodies, like pain, their heartbeat, and temperature. Fifty healthy adults participated in experiments where they received this ear stimulation and then performed tasks to measure these internal sensations. The goal was to understand the basic science of 'interoception' (body awareness) and how this non-invasive tool might influence it.