First-order structure induces the 3-D curvature contrast effect.
Vision Res
; 41(28): 3829-35, 2001 Dec.
Article
em En
| MEDLINE
| ID: mdl-11738450
ABSTRACT
A 3-D curvature contrast effect has been reported in shading-and-texture-defined (Curran & Johnson (1996). Vision Research 36, 3641-3653) and in stereoscopically defined (te Pas, Rogers, & Ledgeway (2000). Current Psychology Letters Brain, Behaviour and Cognition 1, 117-126) stimuli. Our experiments show that a clear 3-D curvature contrast effect also occurs in motion-defined stimuli. The magnitude of the effect is similar in motion-, stereo- and shading-and-texture defined stimuli, suggesting that the 3-D curvature contrast effect is shape-based. We find a distinct contrast effect that is similar in the case of inducers that contain second-order (curvature) information and in the case of inducers that contain only first-order (slant and tilt) information. The effect with inducers that contain only zeroth-order (depth) information is very small. We conclude that the first-order structure is sufficient to induce a 3-D contrast effect.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Percepção de Profundidade
/
Percepção de Forma
/
Percepção de Movimento
Limite:
Humans
Idioma:
En
Revista:
Vision Res
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Holanda