Learning of Foreign Language Sounds Boosted by Non-invasive Nerve Stimulation

"By the end of the training, those participants were 13% better on average at classifying tones and reached peak performance twice as quickly as control participants who wore the tVNS device but never received stimulation."

https://scitechdaily.com/learning-of-foreign-language-sounds-boosted-by-non-invasive-nerve-stimulation/