Collective plasticity of binocular interactions in the adult visual system.
Sci Rep
; 14(1): 10494, 2024 05 07.
Article
em En
| MEDLINE
| ID: mdl-38714660
ABSTRACT
Binocular visual plasticity can be initiated via either bottom-up or top-down mechanisms, but it is unknown if these two forms of adult plasticity can be independently combined. In seven participants with normal binocular vision, sensory eye dominance was assessed using a binocular rivalry task, before and after a period of monocular deprivation and with and without selective attention directed towards one eye. On each trial, participants reported the dominant monocular target and the inter-ocular contrast difference between the stimuli was systematically altered to obtain estimates of ocular dominance. We found that both monocular light- and pattern-deprivation shifted dominance in favour of the deprived eye. However, this shift was completely counteracted if the non-deprived eye's stimulus was selectively attended. These results reveal that shifts in ocular dominance, driven by bottom-up and top-down selection, appear to act independently to regulate the relative contrast gain between the two eyes.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Visão Binocular
/
Dominância Ocular
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article