Neuropsyhological studies involving patients with

experiments on monkeys in parallel with human subjects would enable a more direct comparison (Kanwisher intro)

Haxby et al have proposed on the basis of a iwde range brain imaging and other data such as that found in the neurpsholocical literature, a model of the human neural system that mediates face perpcetion. The model has a branching structure that emphasises a distinction between the representaion of invariant apsects of faces, which underlie the recognition of identity, and therepresentation of variant aspects that uneerlie perceprion of information pertinent for socal communication. The model has a heirachical structure that distingiushes a core system for the visual analysis of afaces and an extended syte that processes the meaning of nfomation obtained from faces. The core system cocnsists of three bilateral regions witham anatomical configuration in which the inferiroe occipital region may provide input to the lateral fusiform and superior temporal sulcal regions.

prosopagnosia (McNeil and Warrington, 1993; ), a selective impairment of the ability to recognize familiar faces despite a largely preserved ability to recognize objects, provides strong evidence that distinct neural systems mediate face perception. The compelling study of patient WJ showed that prospagnosia cannot b seen as a more general impairment for within category-category discriminations. The mCneil and Warrington study of Wj a ptient who exhibited profound proaopagnoisa was however able to recofnise another group of visually and easil confussble stimuli, the faces of sheep. Double dissociations have also been found, patient CK (REF) exhibited impaired reading and object rcognition despoite normal face recognition, indicating that the neural systems involved in face recognition and object recognition are dissociated. The lesions associated with prospagnosia are found in the ventral occipitotemporal cortex and are usually bilateral(ref dam sergent) however there is evidence of cases of prosopagnosia associated with damage confined to the right hemisphere (Derenzi and Derenzi et al.)

Some topics in this essay:
Neuro Haxby, Elizabeth Haxby, HAX Fmri, Results FFA, , Moscovitch Moscovitch, Kanwisher Kanwisher, McNeil Warrington, CK REF, Johnson Infnats, fusiform gyrus, neural system, eye gaze, et al, neural systems, recognition identity, brain imaging, haxby et al, responsive regions, stronger response, object recognition, functional brain imaging, perception involves recognition, neural systems involved, involves recognition identity,