Is there a term called "mirror face"??

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Feb 10th 2012 05:03
My teacher for one of the English courses I've taken said that, a person whose face expressions are changing spontaneously in a noticeable way as a reaction to what he heard or saw, is called a person with "mirror face".
On the other hand, the one who doesn't give any reaction is called a person with "mask face".

When I googled that, I didn't find any results!!
Are those terms really existed in English??


Thank you.