重复视觉刺激可促进重度弱视的恢复。

Repetitive visual stimulation enhances recovery from severe amblyopia.

机构信息

Department of Biology, University of Maryland, College Park, Maryland 20742, USA.

出版信息

Learn Mem. 2013 May 16;20(6):311-7. doi: 10.1101/lm.030361.113.

Abstract

Severe amblyopia, characterized by a significant reduction in visual acuity through the affected eye, is highly resistant to reversal in adulthood. We have previously shown that synaptic plasticity can be reactivated in the adult rat visual cortex by dark exposure, and the reactivated plasticity can be harnessed to promote the recovery from severe amblyopia. Here we show that deprived-eye visually evoked responses are rapidly strengthened in dark-exposed amblyopes by passive viewing of repetitive visual stimuli. Surprisingly, passive visual stimulation rapidly enhanced visually evoked responses to novel stimuli and enhanced the recovery from severe amblyopia driven by performance of active visual discriminations. Thus a series of simple, noninvasive manipulations of visual experience can be used in combination to significantly guide the recovery of visual response strength, selectivity, and spatial acuity in adult amblyopes.

摘要

重度弱视的特征是受影响眼的视力明显下降,在成年后很难逆转。我们之前已经表明,在成年大鼠视觉皮层中,通过暗适应可以重新激活突触可塑性,并且可以利用重新激活的可塑性来促进重度弱视的恢复。在这里,我们表明通过被动观看重复的视觉刺激,在暗适应弱视者中,剥夺眼的视觉诱发反应可以迅速增强。令人惊讶的是,被动视觉刺激可以迅速增强对新刺激的视觉反应,并增强由主动视觉辨别驱动的重度弱视的恢复。因此,可以将一系列简单的、非侵入性的视觉经验操作组合使用,以显著引导成年弱视者的视觉反应强度、选择性和空间锐度的恢复。

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