Orientation dependency for foveal line stimuli: detection and intensity discrimination, resolution, orientation discrimination and vernier acuity.

Westheimer, G; Beard, B L

Westheimer, G; Beard, B L.

Afiliación

Westheimer G; Department of Molecular and Cell Biology, University of California, Berkeley 94720, USA. gwest@socrates.berkeley.edu

Vision Res ; 38(8): 1097-103, 1998 Apr.

Article en En | MEDLINE | ID: mdl-9666969

RESUMEN

Thresholds were measured for five tasks: line detection, intensity discrimination, two-line resolution, vernier acuity and line-orientation discrimination. For each task, 30 arcmin lines were presented foveally in eight retinal meridians to assess similarities in orientation anisotropies across tasks in the same observer. Three observers were tested. The pattern of the orientation anisotropy differs across tasks. Meridional anisotropies exist in detection, increment discrimination thresholds, and vernier acuity but the classical oblique effect is consistently found only in orientation discrimination.

Asunto(s)

Reconocimiento Visual de Modelos/fisiología; Discriminación en Psicología; Femenino; Humanos; Psicometría; Psicofísica; Rotación; Umbral Sensorial/fisiología

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Reconocimiento Visual de Modelos Tipo de estudio: Diagnostic_studies / Prognostic_studies Límite: Female / Humans Idioma: En Revista: Vision Res Año: 1998 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links