Could a person raise their eyebrow when facial muscles affected by cva?

Depends: This depends on which facial muscles and nerves were affected, and if the nerves were affected, where along the pathway of the nerve was lesioned. Also, how and when the person began rehabilitative exercises post stroke.

Facial muscles are: More reliably impaired by peripheral vii nerve lesions, particularly the temporal ; zygomatic branches. Strokes can do this, but "central sparing" may preserve the eyes and forehead while flattening basil animal fold. The location of cvs, cerebral vs brainstem can change this as well.