关键词: Hebb mechanisms dyslexia eye fixations eye tracking reading

来  源:   DOI:10.3390/brainsci13101478   PDF(Pubmed)

Abstract:
When reading, dyslexic readers exhibit more and longer fixations than normal readers. However, there is no significant difference when dyslexic and control readers perform only visual tasks on a string of letters, showing the importance of cognitive processes in reading. This linguistic and cognitive processing requirement in reading is often perturbed for dyslexic readers by perceived additional letters and word mirror images superposed on the primary images on the primary cortex, inducing internal visual crowding. Here, we show that while for a normal reader, the number and the duration of fixations remain invariant whatever the nature of the lighting, the excess of fixations and total duration of reading can be controlled for a dyslexic reader using the Hebbian mechanisms to erase extra images in optimized pulse-width lighting. In this case, the number of fixations can then be reduced by a factor of about 1.8, recovering the normal reading experiment.
摘要:
阅读时,诵读困难的读者比普通读者表现出更多和更长的关注。然而,当阅读障碍和控制读者只对一串字母执行视觉任务时,没有显着差异,显示认知过程在阅读中的重要性。阅读中的这种语言和认知处理要求通常会由于阅读困难的读者而被感知到的附加字母和单词镜像图像叠加在主要皮层的主要图像上而受到干扰,诱导内部视觉拥挤。这里,我们表明,对于普通读者来说,无论照明的性质如何,固定的数量和持续时间都保持不变,可以使用Hebbian机制在优化的脉冲宽度照明中擦除额外的图像来控制阅读障碍读者的过量注视和阅读的总持续时间。在这种情况下,然后,固定的数量可以减少约1.8倍,恢复正常的阅读实验。
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