The Effect of Transcutaneous Vagal Nerve Stimulation (tVNS) on Cerebral Vasospasm Secondary to Aneurysmal Subarachnoid Hemorrhage

Participants will receive up to 4 sessions per day of up to 20-minute stimulation, over the next 10 days of their inpatient hospital stay, following endovascular treatment. Stimulation will be provided by the tVNS device through a small electrode placed around the ear that will send low intensity, pulsed, electrical pulses the vagus nerve.