中国电子科技2009，Vol.7Issue(3)：236-239,4.
fMRI Study Revealing Neural Mechanisms of the Functions of SOA in Spatial Orienting
fMRI Study Revealing Neural Mechanisms of the Functions of SOA in Spatial Orienting
摘要
Abstract
It is well documented that orienting attention plays an important role in visual search. However, it remains unclear how the executive brain regions will act when two different stimulus onset asynchrony (SOA) are used in visual search. In this work, event-related fMRI was used to investigate neural mechanisms on the functions of SOA in endogenous and exogenous orienting. The results showed that in the endogenous orienting, long SOA versus short SOA resulted in widespread cortical activation mainly including right medial frontal gyrus and bilateral middle frontal gyri. Conversely, in exogenous orienting, long SOA compared to short SOA resulted in only activations in bilateral middle frontal gyri. These findings indicated that these two spatial orienting involved different brain areas and neural mechanisms.关键词
Endogenous orienting/ event-related fMRI/ exogenous orienting/ stimulus onset asynchronies (SOA).Key words
Endogenous orienting/ event-related fMRI/ exogenous orienting/ stimulus onset asynchronies (SOA).引用本文复制引用
Yin Tian,Qian Zhang,De-Zhong Yao..fMRI Study Revealing Neural Mechanisms of the Functions of SOA in Spatial Orienting[J].中国电子科技,2009,7(3):236-239,4.基金项目
This work was supported by the National Natural Science Foundation of China under Grant No. 30525030, 60701015, and 60736029. （）
