Occlusion contributes to temporal processing differences between crossed and uncrossed stereopsis in random-dot displays.
Vision Res
; 39(2): 331-9, 1999 Jan.
Article
en En
| MEDLINE
| ID: mdl-10326139
ABSTRACT
Stereoscopic depth discrimination was investigated in crossed and uncrossed directions using stimuli defined by binocular disparity differences embedded in dynamic random-dot stereograms. Across three experiments, fixation was directed to a point on the display screen (which placed crossed stimuli in front of and uncrossed stimuli behind, the background dots of the stereogram), to a point in front of the display screen (which placed both crossed and uncrossed stimuli in front of the background dots), and to a point behind the display screen (which placed both crossed and uncrossed stimuli behind the background dots). Results showed that depth discrimination was always good when the stimuli appeared in front of the background dots of the stereogram, whereas discrimination was always poor when the stimuli appeared behind the background dots. These results suggest that differences between crossed and uncrossed stereopsis as reported in past research arose, in part, from effects related to occlusion.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Disparidad Visual
/
Percepción de Profundidad
Tipo de estudio:
Clinical_trials
Límite:
Humans
Idioma:
En
Revista:
Vision Res
Año:
1999
Tipo del documento:
Article
País de afiliación:
Estados Unidos