Feasibility and Efficacy of Transcutaneous Auricular Vagus Nerve Stimulation for Insomnia in Survivors of Childhood Acute Lymphoblastic Leukemia

"Active transcutaneous auricular vagus nerve stimulation (tVNS) using the Soterix device.~Stimulation is delivered nightly for 20 minutes at 80% of the participant's discomfort threshold."

The sham stimulation used the Soterix device, but without active electrical stimulation. The procedure mimics the verum condition in duration and setup. Inactive stimulation is delivered nightly for 20 minutes at 80% of the participant's discomfort threshold.

Receive Pittsburgh Sleep Quality Index (PSQI); Insomnia Severity Index (ISI); Sleep diaries; Actigraphy via Fitbit Charge 5

Measured using CNS Vital Signs and DASS-21.