Does the Gazing Direction's principle in visual composition has been confirmed by an eye-tracking study?

I would like to appreciate if some scientist have assessed this important principle of art,

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Lecture, Fantin-Latour

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any hint would be great,

thanks

Great design resource

100 Things Every Designer Needs to Know About People (Voices That Matter) Submitted June 16, 2019 at 07:43PM by JoonDoe http://bit.ly/2XhtqiF