Is the LAN effect in morphosyntactic processing an ERP artifact?
Is the LAN effect in morphosyntactic processing an ERP artifact?
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DOI：
10.1016/j.bandl.2019.01.003
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发表时间：
2019-04-01
影响因子：
2.5
通讯作者：
Davidson, Doug
中科院分区：
文献类型：
--
作者：
Caffarra, Sendy;Mendoza, Martha;Davidson, Doug
左前负波（LAN）是一种ERP成分，通常与形态句法加工有关，但最近的报道质疑LAN效应是否真的存在。本项目研究是否局域网效应，观察到的总平均响应本地协议违反，是两个不同的ERP效应（N400，P600）之间的重叠的结果，在一个水平的主题（n = 80），项目（n = 120），或审判（n = 6160）。对300 - 500 ms之间的ERP效应进行的按受试者、按项目和按试验分析显示，55%的参与者、46%的项目和49%的试验存在LAN。观察到许多双相LAN-P600反应的例子。混合线性模型显示，考虑受试者变异性后，LAN效应量并未降低。目前的研究结果表明，在某些情况下，总平均LAN效应代表了个体参与者、项目和试验的大脑反应。
The left anterior negativity (LAN) is an ERP component that has been often associated with morphosyntactic processing, but recent reports have questioned whether the LAN effect, in fact, exists. The present project examined whether the LAN effect, observed in the grand average response to local agreement violations, is the result of the overlap between two different ERP effects (N400, P600) at the level of subjects (n = 80), items (n = 120), or trials (n = 6160). By-subject, by-item, and by-trial analyses of the ERP effect between 300 and 500 ms showed a LAN for 55% of the participants, 46% of the items, and 49% of the trials. Many examples of the biphasic LAN-P600 response were observed. Mixed-linear models showed that the LAN effect size was not reduced after accounting for subject variability. The present results suggest that there are cases where the grand average LAN effect represents the brain responses of individual participants, items, and trials.