Translation
As far as I can understand english,
"To perceive something" or "to notice something" are very good translations of the french verb "percevoir".
"To notice" seems however better in the context : to see and become conscious of ...
Il the aoa (wrong) value was indeed displayed, the information was "in sight", but the crew didn't become conscious that it was wrong, showing steady small aoa at the time effective aoa should was increasing while they were slowing down, checking stall related protections. AoA indication is in itself a protection ... And they failed to notice that that protection didn't display a value coherent with the slow speed.
All three crew members? Not cross-checking available information?