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Titolo:
Covert recognition in acquired and developmental prosopagnosia
Autore:
Barton, JJS; Cherkasova, M; OConnor, M;
Indirizzi:
Beth Israel Deaconess Med Ctr, Dept Neurol, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr Boston MA USA 02215 l, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr, Dept Ophthalmol, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr Boston MA USA 02215 l, Boston, MA 02215 USA Harvard Univ, Sch Med, Cambridge, MA 02138 USA Harvard Univ Cambridge MA USA 02138 niv, Sch Med, Cambridge, MA 02138 USA Boston Univ, Dept Biomed Engn, Boston, MA 02215 USA Boston Univ Boston MAUSA 02215 v, Dept Biomed Engn, Boston, MA 02215 USA
Titolo Testata:
NEUROLOGY
fascicolo: 7, volume: 57, anno: 2001,
pagine: 1161 - 1168
SICI:
0028-3878(20011009)57:7<1161:CRIAAD>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
RIGHT-HEMISPHERE DAMAGE; FACE RECOGNITION; FACIAL RECOGNITION; UNFAMILIAR FACES; OVERT RECOGNITION; FALSE RECOGNITION; PERCEPTION; PATIENT; KNOWLEDGE; FAMILIAR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Barton, JJS Beth Israel Deaconess Med Ctr, Dept Neurol, KS 452,330 Brookline Ave, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr KS 452,330 Brookline Ave Boston MA USA 02215
Citazione:
J.J.S. Barton et al., "Covert recognition in acquired and developmental prosopagnosia", NEUROLOGY, 57(7), 2001, pp. 1161-1168

Abstract

Background: Some patients with prosopagnosia have covert recognition, meaning that they retain some familiarity or knowledge of facial identity of which they are not aware. Objective: To test the hypothesis that prosopagnosic patients with right occipitotemporal lesions and impaired face perceptionlack covert processing, whereas patients with associative prosopagnosia and bilateral anterior temporal lesions possess it. Methods: Eight patients with prosopagnosia were tested with a battery of four face recognition teststo determine their ability to discriminate between famous and unknown faces. Results: Measures of overt familiarity revealed better residual discrimination in patients with acquired prosopagnosia than in those with the developmental form. With forced-choice methods using famous faces paired with unknown faces, no patient demonstrated covert familiarity. However, when the semantic cue of the name of the famous face was provided, covert processingwas present in all five patients with acquired prosopagnosia, including the three with extensive right-sided lesions and impaired perceptual discrimination of facial configuration. Sorting unrecognized faces by occupation was also performed above chance in three of these five patients. In contrast,none of the three patients with developmental prosopagnosia bad covert processing, even though two demonstrated flawless performance on similar testsof name (rather than face) recognition. Overt familiarity correlated highly with the degree of covert recognition. Conclusions: Extensive right occipitotemporal lesions with significant deficits in face perception are not incompatible with covert face processing. Covert processing is absent in developmental prosopagnosia, because this condition likely precludes the establishment of a store of accurate facial memories. The presence of covert processing correlates with the degree of residual overt familiarity, indicatingthat these are related phenomena.

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Documento generato il 23/01/20 alle ore 03:53:39