The relationship within and between the extrinsic and intrinsic systems indicated by resting state correlational patterns of sensory cortices

Tian, Lixia, Jiang, Tianzi, Liu, Yong, Yu, Chunshui, Wang, Kun, Zhou, Yuan, Song, Ming and Li, Kuncheng (2007) The relationship within and between the extrinsic and intrinsic systems indicated by resting state correlational patterns of sensory cortices. NeuroImage, 36 3: 684-690. doi:10.1016/j.neuroimage.2007.03.044


Author Tian, Lixia
Jiang, Tianzi
Liu, Yong
Yu, Chunshui
Wang, Kun
Zhou, Yuan
Song, Ming
Li, Kuncheng
Title The relationship within and between the extrinsic and intrinsic systems indicated by resting state correlational patterns of sensory cortices
Journal name NeuroImage   Check publisher's open access policy
ISSN 1053-8119
1095-9572
Publication date 2007-04-01
Sub-type Article (original research)
DOI 10.1016/j.neuroimage.2007.03.044
Volume 36
Issue 3
Start page 684
End page 690
Total pages 7
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Language eng
Formatted abstract
Much Research has been done on extrinsic and intrinsic systems, which consist of brain regions associated with the processing of externally and internally oriented stimuli, respectively. However, understanding of the underlying relationships within and between these two systems is relatively limited. To improve our understanding of these underlying relationships, we investigated the positive and negative correlations of three regions of interest (ROIs) located in the auditory, visual and somatosensory systems by using resting state functional MRI (fMRI) with a large sample size. We found that all three sensory systems exhibited significant negative correlation with the intrinsic system. In contrast, positive correlations between these sensory cortices and brain regions outside their respective system were limited. The present study extended former findings by indicating that multiple subsystems rather than a single subsystem of the extrinsic system are inherently negatively correlated with the intrinsic system. We suggest that these negative correlations between the extrinsic and intrinsic systems may explain the phenomenon that externally and internally oriented processes can always disturb or even interrupt each other.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Brain Institute Publications
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Created: Thu, 20 Oct 2011, 12:20:05 EST by Debra McMurtrie on behalf of Queensland Brain Institute