human visual ecology and orientation anisotropies in acuity.the visual environment of cree indians from the east coast of james bay, quebec, is different from that of city-raised euro-canadians. so also are their corresponding orientation anisotropies in visual acuity. a euro-canadian sample exhibited the usual higher resolution for vertically and horizontally oriented gratings as compared with oblique orientations, while a cree indian sample did not. the most parsimonious explanation of these acuity differences is that orientation-specific detectors in ...19734752214
comparing the clinical presentation of first-episode psychosis across different migrant and ethnic minority groups in montreal, explore differences in severity and nature of symptoms of first-episode psychosis (fep) according to ethnic group and migrant status.201222546062
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