Laboratory of Language Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences (PAS), Warsaw, Poland.
Bioimaging Research Center, Institute of Physiology and Pathology of Hearing, Warsaw, Poland, Kajetany, Mazovia, Poland.
Child Dev. 2024 Jul-Aug;95(4):e236-e252. doi: 10.1111/cdev.14080. Epub 2024 Feb 23.
This study investigated the neural basis of letter and speech sound (LS) integration in 53 typical readers (35 girls, all White) during the first 2 years of reading education (ages 7-9). Changes in both sensory (multisensory vs unisensory) and linguistic (congruent vs incongruent) aspects of LS integration were examined. The left superior temporal cortex and bilateral inferior frontal cortex showed increasing activation for multisensory over unisensory LS over time, driven by reduced activation to speech sounds. No changes were noted in the congruency effect. However, at age nine, heightened activation to incongruent over congruent LS pairs were observed, correlating with individual differences in reading development. This suggests that the incongruency effect evolves at varying rates depending on reading skills.
本研究调查了 53 名典型阅读者（35 名女孩，均为白人）在阅读教育的头 2 年（7-9 岁）期间字母和语音（LS）整合的神经基础。研究考察了 LS 整合的感觉（多感觉与单感觉）和语言（一致与不一致）方面的变化。左侧颞上回和双侧额下回的多感觉 LS 激活随时间增加，而语音的激活减少。一致性效应没有变化。然而，在 9 岁时，观察到不一致的 LS 对强于一致的 LS 对的激活增加，与阅读发展的个体差异相关。这表明，不一致效应的发展速度取决于阅读技能。
