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Rapid changes in brain structure predict improvements induced by perceptual learning

机译:脑结构的快速变化预示着知觉学习会导致改善

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Practice-dependent changes in brain structure can occur in task relevant brain regions as a result of extensive training in complex motor tasks and long-term cognitive training but little is known about the impact of visual perceptual learning on brain structure. Here we studied the effect of five days of visual perceptual learning in a motion-color conjunction search task using anatomical MRI. We found rapid changes in gray matter volume in the right posterior superior temporal sulcus, an area sensitive to coherently moving stimuli, that predicted the degree to which an individual's performance improved with training. Furthermore, behavioral improvements were also predicted by volumetric changes in an extended white matter region underlying the visual cortex. These findings point towards quick and efficient plastic neural mechanisms that enable the visual brain to deal effectively with changing environmental demands.
机译:由于在复杂的运动任务中进行了广泛的培训和进行了长期的认知培训,与任务相关的大脑区域可能发生与实践有关的大脑结构变化,但对视觉感知学习对大脑结构的影响知之甚少。在这里,我们使用解剖学MRI研究了五天视觉知觉学习在运动色合搜索任务中的效果。我们发现右后颞上沟(对连贯移动​​的刺激敏感)的灰质体积快速变化,预示着训练后个人表现的改善程度。此外,行为改善也通过视觉皮层下方扩展的白质区域的体积变化来预测。这些发现指向快速有效的塑性神经机制,使视觉大脑能够有效应对不断变化的环境需求。

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