Event-related potentials and serial position effects in a visual probe recognition task.
Event-related potentials and serial position effects in a visual probe recognition task.
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视觉探针识别任务中的事件相关电位和串行位置效应。
DOI：
10.1017/s0048577298970457
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发表时间：
1998
期刊：
影响因子：
3.7
通讯作者：
Moreno,S
中科院分区：
文献类型：
--
作者：
CritesJr,SL;Devine,JV;Lozano,DI;Moreno,S
在两个实验中，我们探讨了使用事件相关脑电位（ERP）在图片识别过程中诱发的效用，以检查认知和神经过程的基础首因和近因效应。每个实验由210次试验组成，其中识别探针遵循12个图片序列（105个匹配和105个不匹配试验）。105次匹配-探针试验包括35次试验，其中探针匹配主要记忆集项目（位置1-3），35次探针匹配中间记忆集项目（位置6-8），35次探针匹配最近记忆集项目（位置10-12）。行为结果显示，近因，但在这两个实验中的首因效应。与初始和中间探针相比，最近探针在大约300至400 ms诱发的ERP更积极;这种增强的积极性出现在一个正分量的峰值约为315毫秒，一个负分量的峰值约为365毫秒。这些发现更符合短期记忆的概念，即长期记忆中的元素的激活，而不是作为一个独特的记忆储存（或存储）与长期记忆分离。
In two experiments, we explored the utility of using event-related brain potentials (ERPs) evoked during picture recognition to examine the cognitive and neural processes underlying primacy and recency effects. Each experiment consisted of 210 trials in which a recognition probe followed a 12-picture sequence (105 match and 105 nonmatch trials). The 105 match-probe trials consisted of 35 trials in which the probe matched a prime memory set item (Positions 1–3), 35 in which the probe matched a middle memory set item (Positions 6–8), and 35 in which the probe matched a recent memory set item (Positions 10–12). Behavioral results revealed recency but not primacy effects in both experiments. Recent probes, compared with prime and middle probes, evoked ERPs that were more positive from approximately 300 to 400 ms; this enhanced positivity occurred in a positive component peaking around 315 ms and a negative component peaking around 365 ms. These findings fit more closely with the notion of short-term memory as an activation of elements in long-term memory than as a distinct memory store (or stores) separate from long-term memory.