A Florida-based startup wants your music to make you even happier. Called Nervana, the company has created a pair of headphones with a patent-pending vagus nerve stimulation generator. That generator syncs music to an electrical signal that aims to trigger the release of dopamine, a feel-good neurotransmitter. The result is supposed to be an intense buzz of happiness that can be felt for hours after turning off this "lifestyle and wellness device."
Read more here: https://electronics.howstuffworks.com/future-tech/headphones-that-could-make-you-happy.htm