眼动与脑电同步记录技术在心理语言学研究中的新进展  

Advances of Co-Registration of Eye Movement and EEG in Psycholinguistic Studies

作　　者：李诸洋[1] 刘璐[1] 

机构地区：[1]天津师范大学心理与行为研究院,天津300074

出　　处：《心理科学》2017年第4期850-855,共6页Journal of Psychological Science

摘　　要：传统的心理语言学研究手段存在一定的弊端,眼动和脑电同步记录技术具有高时间和高空间分辨率的特性,能够在自然阅读情境下探讨人在阅读中认知加工的时间进程及其相应的神经机制。本文在阐述眼动与脑电同步记录的必要性和方法的基础上,较为全面地介绍了近10年来同步记录技术在心理语言学研究中的新进展,并对该技术的应用前景进行了展望,以期对国内从事心理语言学领域的研究者有一定的启示。Brain-electric correlates of reading have traditionally been studied with word-by-word presentation, called serial visual presentation （SVP）, a condition that eliminated important aspects of the normal reading process and precluded direct comparisons between neural activity and oculomotor behavior, so that the results obtained by this method had lower ecological validity, which was difficult to be popularized. And EM only described a summation of all cognitive processing occurring during reading, which could not show the sequence of the cognitive processes. There was a new methodology for studying psycholinguistic, which combines EM and EEG to track the time course of cognitive processes. This technique has the advantage of coupling accurate time measures from Event-related potentials （ERPs） and the location of the eye on the stimulus, which could compensate for the lack of EM and ERPs, so it could be used to explore the time course of cognitive processes and its neural mechanism in the process of reading under the natural reading condition. The technique needed two computers, which were connected through parallel ports. The computer A was used for stimulus presentation and the eye-movement acquisition. And the computer B was used to collect the EEG signals by means of the EEG amplifier. It should be noted that eye tracker and EEG amplifier must have the same sampling rate. The computer A would send a synchronization signal （TTL Pulse） to computer B as soon as the stimulus was presented on the screen. The synchronization signal could allow the EM and EEG signals to be recorded simultaneously, which could provide an accurate mark for the off-line analysis of EEG data. It should be pointed that saccade offset or the onset of the first fixation were treated as the reference mark of EEG segment obtained by co-registration of the EM and EEG record, which was different from traditional ERP off-line analysis. Some studies have begun to make use of this technique to explore fundamental phenomena of psychol

关 键 词：眼动与脑电同步技术 自然阅读 心理语言学 

分 类 号：B842.5[哲学宗教—基础心理学]