Adapting to an aftereffect.
J Vis
; 8(3): 29.1-10, 2008 Mar 27.
Article
em En
| MEDLINE
| ID: mdl-18484835
ABSTRACT
We report a new type of orientation-contingent color aftereffect in which the color aftereffect is opposite to the classical McCollough effect, i.e., the perceived color of the aftereffect is the same as the inducer's color. Interleaved exposure to red, horizontal and achromatic (gray), horizontal gratings led to a long-lasting aftereffect in which achromatic horizontal gratings appeared reddish. The effect, termed the anti-McCollough effect, although weaker than the classical aftereffect, remained stable for a moderate duration of time (24 hours). Unlike the classical aftereffect, which is known to not transfer interocularly, the new after-aftereffect transferred 100%, suggesting that its locus in the brain was downstream of the classical effect. It is likely that neurons in a higher-order area adapted to the classical color aftereffect that was represented in a lower-order area, thus forming an aftereffect of an aftereffect, i.e., an after-aftereffect. Our finding has implications as to how neural activity in lower- and higher-level areas in the brain interacts to yield conscious visual experience.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Reconhecimento Visual de Modelos
/
Adaptação Ocular
/
Percepção de Cores
/
Pós-Efeito de Figura
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
J Vis
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Estados Unidos