I love the expression (emphasis mine) that Thich Nhat Hanh used, in the quote below, to describe the dopamine effect that we feel when receiving a response through our devices.

We all crave connection, and many of us try to find it through our phones or e-mail. We feel a neurochemical sweetness when someone sends us a text or an e-mail, and we feel anxious when were not with our phones or near them.

~ from Silence: The Power of Quiet in a World Full of Noise