Vagus nerve stimulation (VNS) has been used to address the
symptoms of treatment-resistant depression (Rush et al., 2000)
and is proposed to also alleviate anxiety effects (George et al.,
2008). Transcutaneous VNS (tVNS) offers a less invasive
treatment mechanism for clinical populations; however, little is
known about tVNS effects on mood and anxiety in a non-
clinical adult population. Using auricular tVNS, the present
study showed that 10 minutes of tVNS immediately preceding
second-language learning across three consecutive days
reduced state negative affect, somatic anxiety, and cognitive
anxiety, dependent on task performance and/or trait
mood/anxiety.