From some old notes of mine - old yes, but still very relevant!!

From Barksblog

I caught part of C-SPAN's Washington Journal this morning while on the exercise bike at the gym. As usual, the sound was muted and the closed caption was on.
As a result, I couldn't hear the guests, one of whom was Rich Lowry, editor of the National Review. Watching video with no sound is a great way to assess body language. I ask myself, is this someone I would listen to? In Lowry's case, the answer was yes.
He appeared engaged and engaging. And there was one particular eye movement he has evidently mastered that takes much practice for most people (TV news anchors included). When he referenced his notes, he did not lower his head. Rather, he cast only his eyes down, and then only briefly. This gives the illusion of not breaking eye contact since the full face is still visible to viewers.
Try it, It is a subtle move, but nonetheless not easy to execute. But if you spend any amount of time on television, it is a tactic worth placing in your arsenal.