获取途径

作者

Wang B. Li B. Wang W. Qian S. Liu K. Sun G.

作者单位

Postgraduates Department, Taishan Medical University, Taian, China Department of Medical Imaging, Jinan Military General Hospital, Jinan, China

刊名

Chinese Journal of Medical Imaging Technology

年份

2016

卷号

Vol.32 No.5

页码

705-708

ISSN

1003-3289

关键词

Functional magnetic resonance imaging Visual cortex

摘要

Objective: To explore the brain anatomical distribution and significance of the preattentional visual cortex during the automatic processing for visual deviant stimulus. Methods: Totally 20 healthy right-handed men underwent visual deviant stimulus using classical oddball passive paradigm. The standard stimulus presented as red square, with the probability of 80%, while the deviation of the stimulus presented as green square, with the probability of 20%, and then the signals of fMRI were observe...更多

Objective: To explore the brain anatomical distribution and significance of the preattentional visual cortex during the automatic processing for visual deviant stimulus. Methods: Totally 20 healthy right-handed men underwent visual deviant stimulus using classical oddball passive paradigm. The standard stimulus presented as red square, with the probability of 80%, while the deviation of the stimulus presented as green square, with the probability of 20%, and then the signals of fMRI were observed. Results: A total of 15 subjects were included in the final analysis. The button accuracies before, during and after the fMRI examination were no less than 95%, and there were no statistically significant differences in reaction time . While fMRI revealed statistical significantly increased BOLD signals in the right fusiform gyrus , part of the right temporal lobe, occipital lobe and parahippocampal gyrus, the left occipital lobe, bilateral superior and middle frontal gyrus and left anterior/posterior central gyrus. Conclusion: fMRI can be used to reveal the anatomical distribution of the preattentional visual cortex clearly and provide a more specific inspection method for the clinical diagnosis of preattentional visual cortex damage, as well as reference for the corresponding disease research.收起

文献类型

期刊

浏览量

2