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- W4377012020 endingPage "14" @default.
- W4377012020 startingPage "14" @default.
- W4377012020 abstract "Center-surround contrast suppression-typically induced when a center pattern is surrounded by another pattern with similar spatial features-is considered a perceptual analogue of center-surround neurophysiology in the visual system. Surround suppression strength is altered in a range of brain conditions affecting young people (e.g., schizophrenia, depression, migraine) and is modulated by various neurotransmitters. The early teen years are associated with neurotransmitter changes in the human visual cortex, which could impact on excitation-inhibition balance and center-surround antagonistic effects. Hence, we predict that early adolescence is associated with perceptual changes in center-surround suppression.In this cross-sectional study, we tested 196 students at every age from 10 to 17 years and 30 adults (aged 21-34 years) to capture the preteen, adolescent, and adult periods. Contrast discrimination thresholds were measured for a central, circular, vertical sinusoidal grating pattern (0.67° radius, 2 cyc/deg spatial frequency, 2 deg/s drift rate) with and without the surround (4° radius, otherwise same spatial properties as the center). Individual suppression strength was determined by comparing the perceived contrast of the target with and without the surround.After excluding unreliable data (7% of total), we found an effect of age on perceptual center-surround contrast suppression strength, F(8,201) = 2.30, P = 0.02, with weaker suppression in the youngest adolescents relative to adults (Bonferroni pairwise comparisons between adults vs 12-year-olds P = 0.01; adults vs 13-year-olds P = 0.002).Our data demonstrate different center-surround interactions in the visual system-a key building block for visual perception-in early adolescence relative to adulthood." @default.
- W4377012020 created "2023-05-19" @default.
- W4377012020 creator A5000346520 @default.
- W4377012020 creator A5000899137 @default.
- W4377012020 creator A5021308196 @default.
- W4377012020 creator A5057845482 @default.
- W4377012020 creator A5082977269 @default.
- W4377012020 date "2023-05-18" @default.
- W4377012020 modified "2023-09-27" @default.
- W4377012020 title "Perceptual Center-Surround Contrast Suppression in Adolescence" @default.
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- W4377012020 doi "https://doi.org/10.1167/iovs.64.5.14" @default.