How selective is the impairment?
Aspects of face processing may be spared
- Face matching
- Age and gender ID
- Facial Emotion ID
Non-face stimuli may be affected
Impaired within class animal recognition
- former bird watcher: "all the birds look the same"
- farmer: unable to distinguish among his cows (zooagnosia???)
Some pure cases exist: DeRenzi (1986)