Semantic richness and the activation of concepts in semantic memory: evidence from event-related potentials.
Semantic richness and the activation of concepts in semantic memory: evidence from event-related potentials.
复制标题
语义丰富性和语义记忆中概念的激活：与事件相关的电位的证据。
DOI：
10.1016/j.brainres.2009.05.092
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发表时间：
2009-07-28
期刊：
影响因子：
2.9
通讯作者：
McRae K
中科院分区：
文献类型：
--
作者：
Kounios J;Green DL;Payne L;Fleck JI;Grondin R;McRae K
语义丰富度是指与概念相关的语义信息量。反应时间（RT）研究表明，涉及丰富概念的单词比涉及贫乏概念的单词引起更快的反应，这表明更丰富的概念被激活得更快。在最近的一项功能神经影像研究中，更丰富的概念引起更少的神经活动，这被解释为更快的激活。这些发现的解释似乎与事件相关电位（ERP）研究相冲突，该研究表明没有证据表明概念激活的速度受到典型语义变量的影响。解决这一明显的矛盾非常重要，因为对 40 年语义记忆 RT 研究的解释取决于语义丰富度等因素是否影响初始概念激活的持续时间或后来的决策和响应过程。与之前关于语义因素对 ERP 影响的研究一致，本研究表明，丰富度影响 P2 和 N400 ERP 成分（相对于行为反应早期）的幅度，但不影响潜伏期，这表明丰富度对 RT 的影响反映了对下游决策或响应机制的时间影响，而不是对上游概念激活的影响。
Semantic richness refers to the amount of semantic information associated with a concept. Reaction-time (RT) studies have shown that words referring to rich concepts elicit faster responses than those referring to impoverished ones, suggesting that richer concepts are activated more quickly. In a recent functional neuroimaging study, richer concepts evoked less neural activity, which was interpreted as faster activation. The interpretations of these findings appear to conflict with event-related potential (ERP) studies showing no evidence that speed of concept activation is influenced by typical semantic variables. Resolution of this apparent contradiction is important because the interpretation of 40 years of semantic-memory RT studies depends on whether factors such as semantic richness influence the duration of initial concept activation or later decision and response processes. Consistent with previous studies of the effects of semantic factors on ERP, the present study shows that richness influences the magnitude, but not the latency, of the P2 and N400 ERP components (which are early relative to behavioral responses), suggesting that effects of richness on RT reflect temporal effects on downstream decision or response mechanisms rather than on upstream concept activation.
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DOI：
10.1037/0278-7393.20.4.804
发表时间：
1994-07-01
影响因子：
2.6
作者：
KOUNIOS, J;HOLCOMB, PJ
通讯作者：
HOLCOMB, PJ
影响因子：
22.4
作者：
CHANG, TM
通讯作者：
CHANG, TM
影响因子：
2.6
作者：
MEYER, DE
通讯作者：
MEYER, DE
影响因子：
3.7
作者：
HOLCOMB, PJ
通讯作者：
HOLCOMB, PJ
DOI：
10.1016/s0022-5371(69)80069-1
发表时间：
1969-01-01
期刊：
JOURNAL OF VERBAL LEARNING AND VERBAL BEHAVIOR
影响因子：
--
作者：
COLLINS, AM;QUILLIAN, MR
通讯作者：
QUILLIAN, MR