Brain Connectivity in Living vs. Nonliving Visual Stimuli

2017 24th National and 2nd International Iranian Conference on Biomedical Engineering (ICBME) Pub Date : 2017-11-01 DOI:10.1109/ICBME.2017.8430279

Tirdad Seifi Ala, Mohammad Ali Ahmadi-Pajouh, Fatemeh Zamanian

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Abstract

Our ability to distinguish different objects of different classes is a highly complex procedure taking place within brain network. Studying the process of object recognition can help us gain a better understanding of semantic knowledge in the brain, and henceforth can be put into use for clinical applications such as treatment of patients with deficits in identifying objects around them. In this article, an ERP experiment was conducted to see how brain connectivity changes due to living vs. nonliving visual stimuli. Imaginary part of coherency was calculated to assess the amount of synchronization among five pivotal cortical regions (frontal, parietal, occipital, left and right temporal) in the brain and two-way repeated-measure ANOVA was used for statistical analysis. The results indicated functional connectivity in living stimuli are higher in occipital-left temporal alpha oscillation, frontal-left temporal theta oscillations and frontal-parietal beta oscillations compared to nonliving stimuli. On the other hand, oscillations in left temporal-right temporal beta band and frontal-parietal theta band in nonliving stimuli showed more synchronizations compared to living group.

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活体与非活体视觉刺激的大脑连通性

我们区分不同类别的不同物体的能力是一个发生在大脑网络中的高度复杂的过程。研究物体识别的过程可以帮助我们更好地了解大脑中的语义知识，因此可以用于临床应用，例如治疗识别周围物体缺陷的患者。在这篇文章中，进行了一个ERP实验，以观察大脑连接如何因活体和非活体视觉刺激而变化。计算一致性的虚部来评估大脑中五个关键皮质区域(额叶、顶叶、枕叶、左右颞叶)的同步量，并使用双向重复测量方差分析进行统计分析。结果表明，与非活体刺激相比，活体刺激在枕叶-左颞叶α振荡、额叶-左颞叶θ振荡和额叶-顶叶β振荡中的功能连通性更高。另一方面，非活体刺激组的左颞-右颞β带和额-顶叶θ带的同步性明显高于活体刺激组。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2017 24th National and 2nd International Iranian Conference on Biomedical Engineering (ICBME)

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