Perceptual filling-in of stereoscopically presented targets.
| Autor: | Couto MF; Departamento de Biologia Animal, Universidade de Brasília, Brasília, DF, CEP 71745-607 Brazil. mcouto@linkexpress.com.br, Pessoa VF |
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| Jazyk: | angličtina |
| Zdroj: | Arquivos brasileiros de oftalmologia [Arq Bras Oftalmol] 2007 Jan-Feb; Vol. 70 (1), pp. 101-4. |
| DOI: | 10.1590/s0004-27492007000100018 |
| Abstrakt: | Purpose: To investigate the influence of parametric variation on the filling-in latency of stereoscopically presented stimuli. Methods: Anaglyphs were created using two circular patches of 0.3 masculine diameter, 0.5 masculine disparity and 6 masculine eccentricity from fixation point. Targets were presented at the visual field midline, 90 masculine and 270 masculine positions, with crossed and uncrossed disparity. The time elapsed for disappearance of the target under voluntary steady fixation was computed. Eighteen subjects tested. Results: There was no significant difference between crossed and uncrossed disparities, nor between near or far from the vertical horopter line. The significant difference was between upper and lower visual field positions. Conclusion: The results show that: (i) stereoscopic presentation does not influence the target filling-in latency; (ii) differences between dorsal and ventral visual stream might influence target filling-in latency. |
| Databáze: | MEDLINE |
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