视觉感知训练改善儿童学习障碍的神经机制及干预效果的研究进展

Advances in Research on the Neural Mechanisms and Intervention Efficacy of Visual Perceptual Training for Improving Learning Disabilities in Children

摘要: 视觉感知训练(Visual Perceptual Training, VPT)是一种通过针对性任务强化特定视觉处理技能的系统性干预方法，旨在优化大脑对视觉信息的接收、组织和理解能力。近年来，VPT在改善儿童学习障碍(Learning Disabilities, LD)方面展现出显著潜力。LD儿童普遍存在视觉感知缺陷，包括眼动控制、视觉空间处理及视觉记忆等核心能力的不足，不仅影响学习信息获取效率，还会引发学业成绩下降、认知资源分配异常和工作记忆超载等问题。VPT的理论基础源于大脑经验依赖性可塑性，可通过调节神经递质平衡、优化白质微结构、重组功能网络、诱导表观遗传代偿以及重塑特定脑区结构与功能等多层面机制，改善LD儿童的视觉信息处理能力。VPT可针对性改善阅读障碍、书写障碍及数学障碍，并在提升学业表现的同时增强学习动机与自信心。本文系统综述了VPT的作用原理与训练方法、改善LD的神经机制及干预效果以及影响干预效果的关键训练参数，旨在为LD的精准康复提供理论与实践依据。

Abstract: Visual Perceptual Training (VPT) is a systematic intervention method that enhances specific visual processing skills through targeted tasks, aimed at optimizing the brain’s ability to receive, organize, and interpret visual information. In recent years, VPT has demonstrated significant potential in ameliorating Learning Disabilities (LD) among children. Children with LD commonly exhibit deficits in visual perception, including core deficiencies in eye movement control, visual-spatial processing, and visual memory. These impairments not only reduce the efficiency of acquiring learning-related information but also contribute to academic underachievement, disrupted allocation of cognitive resources, and working memory overload. The theoretical foundation of VPT stems from the brain’s experience-dependent plasticity. It can improve visual information processing in children with LD through multi-level mechanisms, including: modulating neurotransmitter balance, optimizing white matter microstructure, reorganizing functional brain networks, inducing epigenetic compensation, and reshaping the structure and function of specific brain regions. VPT can effectively target and improve dyslexia, dysgraphia, and dyscalculia. Beyond enhancing academic performance, it concurrently strengthens academic motivation and self-efficacy. This article systematically reviews the principles and methods of VPT, the neural mechanisms and intervention efficacy for LD, as well as the key training parameters that affect intervention outcomes, thereby providing a theoretical and practical framework for the precision rehabilitation of learning disabilities.