ABSTRACT
Powerful demonstrations of parallel impairments of imagery and recognition have come from cases where there are category-specific impairments affecting both imagery and recognition. Some reports of face recognition impairments have described intact face imagery in prosopagnosic patients. This chapter investigates face imagery for the patients, H. J. A. and P. H., whose visual recognition abilities are extensively described. H. J. A'. s problems with face recognition arise in context of a perceptual impairment that compromises the integration of features into a coherent representation. There were therefore grounds to suggest that face imagery might be better preserved for H. J. A. than for P. H., and this is what the authors sought to document with formal testing. Cases of prosopagnosia with preserved visual imagery were also discussed by Levine and Calvanio, who raised several questions concerning their validity. Results are shown together with data for six age-matched controls for each person. From the control data, it is clear that the tests used with H. J. A. and P. H. was of equivalent difficulty.
