Prosopagnosia

True prosopagnosy preserves the perception of human faces. However the latt er faces cannot be identified even by patients who have kept an intact impl icit recognition. After a thorough examination of the visual recognition di sorder, other kinds of information may be involved like, an one hand, those of places, landscapes and building constructions or; an the other hand tho se of animals. We observed that a transitorily prosopagnosic farmer was def initively unable to recognize his cows Arguments for a right hemisphere dom inance are discussed.