TEMPORAL PROCESSING IN THE READING DISABLED

特定阅读障碍（SRD）是在超过3%的儿童中发现的， 国家尽管残疾普遍存在，但它仍然被定义为 由于没有发现可靠的SRD诊断测试，因此排除了该测试。 这种失败的原因之一是SRD是一种异质性疾病。 视觉和听觉处理缺陷，记忆障碍， 感觉间整合均已被证明存在于SRD受试者中。 这个项目旨在研究时间处理的作用， 特别是与视觉系统相关的，在SRD受试者中。视觉 诱发电位将用于研究单独的视觉通路， 都与SRD有牵连以前的研究表明，当 视觉系统内的平行通路被单独评估， 在SRD受试者中发现大细胞通路受损，而 小细胞通路未受损。大细胞途径被认为 参与处理运动和深度，因此参与 来评估物体在太空中的位置小细胞途径 是用来评估物体的形状的减值 因此，大细胞途径可能解释了 一些SRD主题的字母和单词似乎在页面上移动。的 将在SRD中评估这些个体视觉通路的功能 成人和儿童。这些研究的结果将与 关于具体阅读缺陷的信息，以及时间测量 在听觉和运动领域的处理。调查正在 旨在评估SRD是否是一种影响颞叶的疾病， 同时在视觉、听觉和运动领域进行处理，或 是否有一组受试者只患有其中一种疾病， 流程.这一信息可能会导致更准确的描述 参与阅读障碍的过程。希望这将 导致对残疾的更客观的诊断， 对更好地治疗和/或补救个人 困难

Specific reading disability (SRD) is found in over 3% of children in this country. Despite the prevalence o the disability, it is still defined by exclusion since no reliable diagnostic tests for SRD have been found. Part of the reason for this failure is that SRD is a heterogeneous disorder. Deficits in visual and auditory processing, memory impairments and intersensory integration have all been shown to exist in SRD subjects. This project is designed to investigate the role of temporal processing, especially in relation to the visual system, in SRD subjects. Visual evoked potentials will be used to study separate visual pathways which have been implicated in SRD. Previous studies have suggested that when parallel pathways within the visual system are assessed separately, the magnocellular pathway is found to be impaired in SRD subjects, while the parvocellular pathway is unimpaired. The magnocellular pathway is thought to be involved in processing movement and depth and is therefore involved in assessing the location of objects in space. The parvocellular pathway is involved in assessing the form of an object. Impairment of the magnocellular pathway might therefore explain the anecdotal reports of some SRD subjects that letters and words appear to move on the page. The functions of these individual visual pathways will be assessed in SRD adults and children. The results of these studies will be combined with information on specific reading deficits, and with measures of temporal processing in the auditory and motor domains. The investigation is designed to assess whether SRD is a disorder which affects the temporal processing in the visual, auditory and motor domains simultaneously, or whether there are groups of subjects with disorders of only one of these processes. This information could lead to a more precise description of the processes involved in reading disability. This, it is hoped, will result in a more objective diagnosis of the disability, with concurrent implications for better treatment and/or remediation of individual difficulties.