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  • Title: Face recognition impairments despite normal holistic processing and face space coding: evidence from a case of developmental prosopagnosia.
    Author: Susilo T, McKone E, Dennett H, Darke H, Palermo R, Hall A, Pidcock M, Dawel A, Jeffery L, Wilson CE, Rhodes G.
    Journal: Cogn Neuropsychol; 2010 Dec; 27(8):636-64. PubMed ID: 22074472.
    Abstract:
    Holistic processing and face space coding are widely considered primary perceptual mechanisms behind good face recognition. Here, however, we present the case of S.P., a developmental prosopagnosic who demonstrated severe impairments in face memory and face perception, yet showed normal holistic processing and face space coding. Across three composite experiments, S.P. showed normal-strength holistic processing for upright faces and no composite effect for inverted faces. Across five aftereffect experiments, S.P. showed normal-sized face aftereffects, which derived normally from face space rather than shape-generic mechanisms. The case of S.P. implies: (a) normal holistic processing and face space coding can be insufficient for good face recognition even when present in combination; and (b) the focus of recent literature on holistic processing and face space should be expanded to include other potential face processing mechanisms (e.g., part-based processing). Our article also highlights the importance of internal task reliability in drawing inferences from single-case studies.
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