Department of Neuroscience, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.
Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.
Neuropsychol Rehabil. 2023 Jul;33(6):989-1017. doi: 10.1080/09602011.2022.2053168. Epub 2022 Mar 24.
While the inferior longitudinal fasciculus was more strongly related to spelling behaviour in skilled adults, the uncinate fasciculus was more strongly related to spelling behaviour in impaired adults. We found strong left lateralization of the arcuate fasciculus and inferior longitudinal fasciculus in both groups. However, lateralization of the inferior frontal occipital fasciculus was more strongly related to spelling response time behaviour in skilled adults, whereas lateralization of the uncinate fasciculus was more strongly related to spelling accuracy behaviour in the impaired adults.
This study provides some useful information for understanding the underlying white matter pathways that support spelling in skilled and impaired adults and underscore the advantage of adopting multiple spelling tasks and outcomes (i.e., response time and accuracy) to better characterize brain-behaviour relationships in skilled and impaired adults.
在熟练成年人中，下额枕束与拼写行为的相关性更强，而在障碍成年人中，钩束与拼写行为的相关性更强。我们发现，两组人群的弓状束和下额枕束都有强烈的左侧偏侧化。然而，在熟练成年人中，下额枕额束的偏侧化与拼写反应时行为的相关性更强，而在障碍成年人中，钩束的偏侧化与拼写准确性行为的相关性更强。
本研究为理解支持熟练和障碍成年人拼写的潜在白质通路提供了一些有用的信息，并强调采用多种拼写任务和结果（即反应时间和准确性）来更好地描述熟练和障碍成年人的大脑行为关系的优势。
