Heather Sellers has prosopagnosia, which causes her to be unable to recognize her own face in a mirror. Her trouble derives from a lack of top-down processing.
Individuals with prosopagnosia have a wide range of face processing and other cognitive and visual impairments.
Many people struggle to extract information other than identity from a face, and may have difficulty interpreting a person's gender, age, or emotional expression.
Some patients with prosopagnosia are unable to recognize certain facial expressions, determine a person's age or gender, or follow someone's gaze.
Others may not recognize themselves in the mirror or in photographs. Prosopagnosia can impair a person's ability to recognize objects such as locations or automobiles.
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