BRAIN POTENTIALS DURING SENTENCE VERIFICATION - AUTOMATIC ASPECTS OF COMPREHENSION
BRAIN POTENTIALS DURING SENTENCE VERIFICATION - AUTOMATIC ASPECTS OF COMPREHENSION
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DOI：
10.1016/0301-0511(85)90008-0
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发表时间：
1985-01-01
影响因子：
2.6
通讯作者：
PERRY, NW
中科院分区：
文献类型：
--
作者：
FISCHLER, I;CHILDERS, DG;PERRY, NW
大学生学习了一系列与虚构人物及其职业相关的事实（例如马修是一名律师）。事件相关的大脑电位（ERP）被记录下来，同时他们随后观看了一系列分段呈现的此类陈述（例如马修/是一名/牙医）。在刺激后 200-420 毫秒（峰值 N320）的时间间隔内，错误地完成陈述的职业的 ERP 比真实陈述的 ERP 显着更负面，无论受试者是否需要对每个陈述做出决定或被动地查看呈现的片段（实验 1 和 2）。后来在“响应”试验中观察到 ERP 呈阳性，错误完成的延迟时间比真实完成的时间更长；但这种积极成分在“无反应”试验中被大大减弱。针对错误完成的增强型 N320 并未因要求受试者在某些试验中做出错误反应而受到影响（实验 3）。结论是，关注所呈现的单词会导致在先前言语输入的上下文中自动分析其含义，并且 ERP 可以指示该分析输出的性质。
College students learned a set of facts relating fictitious people and their occupations (e.g. Matthew is a lawyer). Event-related brain potentials (ERPs) were recorded while they subsequently viewed a series of such statements presented in segments (e.g. Matthew/is a/dentist). ERPs to occupations completing statements falsely were significantly more negative than those to true statements in an interval 200-420 msec poststimulus (peak N320), whether subjects were required to make a decision about each statement or passively view the presented segments (Experiments 1 and 2). A later ERP positivity was observed during ''response'' trials that was of longer latency for false than true completions; but this positive component was greatly attenuated during ''no-response'' trials. The enhanced N320 for false completions was not affected by requiring subjects on some trials to respond incorrectly (Experiment 3). It is concluded that attending to a presented word results in an automatic analysis of its meaning in the context of a preceding verbal input, and that ERPs can indicate the nature of the output of that analysis.