Visual scanning of facial expressions in schizophrenia

Citation
Bl. Schwartz et al., Visual scanning of facial expressions in schizophrenia, J NEUROP CL, 11(1), 1999, pp. 103-106
Citations number
19
Categorie Soggetti
Neurology
Journal title
JOURNAL OF NEUROPSYCHIATRY AND CLINICAL NEUROSCIENCES
ISSN journal
08950172 → ACNP
Volume
11
Issue
1
Year of publication
1999
Pages
103 - 106
Database
ISI
SICI code
0895-0172(199924)11:1<103:VSOFEI>2.0.ZU;2-O
Abstract
The authors previously observed that schizophrenic patients generated fewer fixations of less than or equal to 50.1 ms in response to faces than did i t clinical control group. This study examined whether deficits in short-dur ation eye movements were related to patients' problems in gestalt perceptio n of faces. Faces were presented in upright and inverted orientations to ex amine the effects of distorting facial gestalts on eye movements. Normal su bjects generated move saccades of less than or equal to 50.1 ms to upright than to inverted faces. Patients' saccades of less than or equal to 50.1 ms did not differ between orientations. Patterns of fixations and of saccades >50.1 ms did not differ between groups. The results may indicate deficits in these patients in search strategies that underlie perception of facial g estalts.