阅读系统中的半球优势会在整个发育过程中改变对人脸处理侧化的贡献。

IF 4.6 2区 医学 Q1 NEUROSCIENCES Developmental Cognitive Neuroscience Pub Date : 2024-07-22 DOI:10.1016/j.dcn.2024.101418
Xinyang Liu , Danni He , Miaomiao Zhu , Yinghui Li , Longnian Lin , Qing Cai
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引用次数: 0

摘要

脸部处理在右半球占主导地位。这种侧化可能受到同一系统内的共侧化及不同系统间的影响,如阅读习得的神经竞争。然而,这种关系模式在发育过程中是如何变化的仍是未知数。本研究考察了不同年龄组的核心面孔处理和文字处理的侧化情况。通过比较 36 名学龄儿童和 40 名年轻成人的 fMRI 数据,我们研究了侧向化是否存在年龄和区域效应,以及系统内和系统间的侧向化关系在发育过程中如何变化。我们的研究结果表明,在被动观看面孔和文本时,两个年龄组的核心面孔系统都出现了明显的右半球侧化,而阅读相关区域则出现了明显的左半球侧化。在观看面孔时,所有参与者的大脑高级功能区都表现出更强的侧向性,而在观看文字时,只有成年人表现出这种侧向性。在两个年龄组中,面孔加工都存在系统内的共侧化,而只有成人发现了系统间的关系。具体来说,阅读过程中布罗卡区的功能侧化对人脸感知过程中FFA的功能不对称具有负向预测作用。本研究从成熟期的角度为阅读诱导的神经竞争理论在中国人群中的应用提供了初步的神经影像学证据。
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Hemispheric dominance in reading system alters contribution to face processing lateralization across development

Face processing dominates the right hemisphere. This lateralization can be affected by co-lateralization within the same system and influence between different systems, such as neural competition from reading acquisition. Yet, how the relationship pattern changes through development remains unknown. This study examined the lateralization of core face processing and word processing in different age groups. By comparing fMRI data from 36 school-aged children and 40 young adults, we investigated whether there are age and regional effects on lateralization, and how relationships between lateralization within and between systems change across development. Our results showed significant right hemispheric lateralization in the core face system and left hemispheric lateralization in reading-related areas for both age groups when viewing faces and texts passively. While all participants showed stronger lateralization in brain regions of higher functional hierarchy when viewing faces, only adults exhibited this lateralization when viewing texts. In both age cohorts, there was intra-system co-lateralization for face processing, whereas an inter-system relationship was only found in adults. Specifically, functional lateralization of Broca’s area during reading negatively predicted functional asymmetry in the FFA during face perception. This study initially provides neuroimaging evidence for the reading-induced neural competition theory from a maturational perspective in Chinese cohorts.

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来源期刊
CiteScore
7.60
自引率
10.60%
发文量
124
审稿时长
6-12 weeks
期刊介绍: The journal publishes theoretical and research papers on cognitive brain development, from infancy through childhood and adolescence and into adulthood. It covers neurocognitive development and neurocognitive processing in both typical and atypical development, including social and affective aspects. Appropriate methodologies for the journal include, but are not limited to, functional neuroimaging (fMRI and MEG), electrophysiology (EEG and ERP), NIRS and transcranial magnetic stimulation, as well as other basic neuroscience approaches using cellular and animal models that directly address cognitive brain development, patient studies, case studies, post-mortem studies and pharmacological studies.
期刊最新文献
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