Exploring cortical attentional system by using fMRI during a continuous perfomance test

被引：44

作者：

Tana M.G. ^{[1
]}

Montin E. ^{[1
]}

Cerutti S. ^{[1
]}

Bianchi A.M. ^{[1
]}

机构：

[1] Department of Bioengineering, IIT Unit, Politecnico di Milano, Milan

来源：

Computational Intelligence and Neuroscience | 2010年 / 2010卷

关键词：

Functional neuroimaging - Magnetic resonance imaging - Brain;

D O I：

10.1155/2010/329213

中图分类号：

学科分类号：

摘要：

Functional magnetic resonance imaging (fMRI) was performed in eight healthy subjects to identify the localization, magnitude, and volume extent of activation in brain regions that are involved in blood oxygen level-dependent (BOLD) response during the performance of Conners' Continuous Performance Test (CPT). An extensive brain network was activated during the task including frontal, temporal, and occipital cortical areas and left cerebellum. The more activated cluster in terms of volume extent and magnitude was located in the right anterior cingulate cortex (ACC). Analyzing the dynamic trend of the activation in the identified areas during the entire duration of the sustained attention test, we found a progressive decreasing of BOLD response probably due to a habituation effect without any deterioration of the performances. The observed brain network is consistent with existing models of visual object processing and attentional control and may serve as a basis for fMRI studies in clinical populations with neuropsychological deficits in Conners' CPT performance. Copyright © 2010 M. G. Tana et al.

引用

共 24 条

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