Barbara L. Fredrickson, a professor of psychology at the University of North Carolina, Chapel Hill, and her colleagues have recently completed research that suggests that our biological capacity to socialize and interact with others face-to-face is something that can be measured. There is a link called the vagal nerve that connects our heart to our brains, the strength of which can be measured through variations in heart rate. The stronger that link, the healthier a person is and the higher their capacity for human connection. With practice, the strength of this connection increases, but likewise decreases without use. The more enmeshed we become with technology, the less capable we may be of human interface.
Read the full article here: Your Phone vs. Your Heart