Responses to facial and non-facial stimuli presented tachistoscopically in either or both visual fields by patients with the Capgras delusion and paranoid schizophrenics.
Abstract
An experiment was carried out designed primarily to test A B Joseph's suggestion that patients with Capgras delusion may have problems integrating information between the two cortical hemispheres; and at the same time it was meant to examine J Cutting's ideas linking schizophrenia in general, and the Capgras delusion in particular, to right hemisphere dysfunction. Three patients with the Capgras delusion and three matched controls diagnosed as paranoid schizophrenics were briefly presented pairs of line-drawn object and photographs of faces randomly in the left visual field, the right visual field or bilaterally. The results with objects revealed no particular pattern of performance for either group; but, when faces were shown, the controls revealed the usual left visual field/right hemisphere advantage while for the Capgras group this was reversed. The results are not consistent with a simple prediction from Joseph's hypothesis but they are in accord with Cutting's theory-though they also pose some problems for it, which are discussed.
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- Berson RJ. Capgras' syndrome. Am J Psychiatry. 1983 Aug;140(8):969–978. [PubMed] [Google Scholar]
- TODD J. The syndrome of Capgras. Psychiatr Q. 1957 Apr;31(2):250–265. [PubMed] [Google Scholar]
- Christodoulou GN, Malliara-Loulakaki S. Delusional misidentification syndromes and cerebral 'dysrhythmia'. Psychiatr Clin (Basel) 1981;14(4):245–251. [PubMed] [Google Scholar]
- Joseph AB. Focal central nervous system abnormalities in patients with misidentification syndromes. Bibl Psychiatr. 1986;(164):68–79. [PubMed] [Google Scholar]
- Ardila A, Rosseli M. Temporal lobe involvement in Capgras syndrome. Int J Neurosci. 1988 Dec;43(3-4):219–224. [PubMed] [Google Scholar]
- MacCallum WA. Capgras symptoms with an organic basis. Br J Psychiatry. 1973 Dec;123(577):639–642. [PubMed] [Google Scholar]
- Daniel DG, Swallows A, Wolff F. Capgras delusion and seizures in association with therapeutic dosages of disulfiram. South Med J. 1987 Dec;80(12):1577–1579. [PubMed] [Google Scholar]
- Lewis SW. Brain imaging in a case of Capgras' syndrome. Br J Psychiatry. 1987 Jan;150:117–121. [PubMed] [Google Scholar]
- Christodoulou GN. The syndrome of Capgras. Br J Psychiatry. 1977 Jun;130:556–564. [PubMed] [Google Scholar]
- Bidault E, Luauté JP, Tzavaras A. Prosopagnosia and the delusional misidentification syndromes. Bibl Psychiatr. 1986;(164):80–91. [PubMed] [Google Scholar]
- Kosslyn SM. Seeing and imagining in the cerebral hemispheres: a computational approach. Psychol Rev. 1987 Apr;94(2):148–175. [PubMed] [Google Scholar]
- Rhodes G. Lateralized processes in face recognition. Br J Psychol. 1985 May;76(Pt 2):249–271. [PubMed] [Google Scholar]
- Snodgrass JG, Vanderwart M. A standardized set of 260 pictures: norms for name agreement, image agreement, familiarity, and visual complexity. J Exp Psychol Hum Learn. 1980 Mar;6(2):174–215. [PubMed] [Google Scholar]
- Ellis HD. Recognizing faces. Br J Psychol. 1975 Nov;66(4):409–426. [PubMed] [Google Scholar]
- Kapur N, Turner A, King C. Reduplicative paramnesia: possible anatomical and neuropsychological mechanisms. J Neurol Neurosurg Psychiatry. 1988 Apr;51(4):579–581.[PMC free article] [PubMed] [Google Scholar]
- Ellis HD, Young AW. Accounting for delusional misidentifications. Br J Psychiatry. 1990 Aug;157:239–248. [PubMed] [Google Scholar]