自然阅读的脑成像研究及其与眼动技术结合

以往的研究者主要采用单词系列呈现的实验范式对词、句子和篇章等材料进行阅读脑成像研究。针对近年来使用自然阅读范式的功能磁共振(fMRI)研究进行分析,建议在该范式下使用脑-眼动同步记录的方式,并介绍了基于注视编码的fMRI数据分析原理。新的范式和技术提高了fMRI研究的生态效度,有利于对阅读中眼动加工的脑机制进行探索,是相关研究的新趋势。未来需要在自然阅读fMRI实验中结合实验设计及其他技术以克服时间分辨率低的问题,同时要注意探讨阅读和眼动脑区的关系。

The neuroimaging studies with naturalistic reading paradigm and co-registration of eye movement and fMRI

The previous neuroimaging studies mainly used the serial visual presentation paradigm to investigate the neural mechanism of reading with words,sentences and paragraphs.Recently,some studies have begun to use the naturalistic reading paradigm in fMRI experiments,which are introduced and discussed.It has been revealed that the co-registration of eye movement and fMRI is a good way to record the data in the naturalistic reading task.In addition,a method using self-paced eye movements as markers for hemodynamic brain responses during naturalistic reading is also introduced.As a trend for future neuroimaging studies of reading,the utilization of new paradigms and new methods provide a high ecological validity to explore the neural mechanism of eye movements in reading.The further research needs to take advantage of experimental designs and other relevant methods to overcome the limitation of fMRI in low resolution of time.Moreover,the relationship between neural systems for reading and eye movements requires further investigation.