Minimum spanning tree in analyzing audiovisual integration network: A developmental study

Document Type : Article

Authors

Institute for Cognitive & Brain Sciences, Shahid Beheshti University, Tehran, Iran

Abstract

Audiovisual integration (AVI) is a brain function that combines received information from visual and auditory sources. Delay in the development of multisensory integration functions makes functional problems in cases like autism spectrum disorder. However, the nature of the development of its network in the brain is poorly understood.
We used resting-state functional magnetic resonance imaging data from ADHD 200 publicly available dataset. There are 192 records from typically developing children (92 Girls) in open eyes conditions which we used to make AVI networks based on functional connectivities. The minimum spanning tree tool was used to have comparable networks. We explored the measures of the extracted trees to discover changes in the developmental trajectory.
The links of the AVI network undergo many changes before nine years and nine months, which form the main structure of the network. Most of these changes in links are related to the superior parietal gyrus area. The subsequent changes are related to setting the network performance, most of which are intra-regional links related to the superior temporal gyrus.
Based on our results, it is recommended to perform localization tasks for rehabilitation or enhancement of AVI in the early stages of AVI development.

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Scientia Iranica

Articles in Press, Accepted Manuscript
Available Online from 27 November 2023

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