Event‐related potentials in a self‐paced novelty oddball task
Event‐related potentials in a self‐paced novelty oddball task
复制标题
自定进度的新颖古怪任务中的事件相关电位
作者：
H. Nittono;P. Ullsperger
对受试者按下自定步速的按键所触发的事件相关电位(ERPs)与以外部步速呈现的相同刺激的ERPs进行比较。14名参与者对穿插在1000赫兹标准音调和各种独特的新奇声音之间的2000赫兹目标音调做出了回应。目标刺激和新刺激在自我触发条件下的P3波幅大于机器触发条件下的P3，机器触发条件下的刺激呈现间隔与自我触发条件下相同。这种影响在额部到中央的头皮部位非常明显。当刺激的时机明确时，与刺激评估相关的神经活动可能增加，并表现为一个大的晚期正向事件相关电位成分。
The event-related potentials (ERPs) to the stimuli triggered by a participant's self-paced key press were compared with the ERPs to the same stimuli presented at an external pace. Fourteen participants responded to 2000 Hz target tones interspersed among 1000 Hz standard tones and various unique novel sounds. The amplitudes of the P3s elicited by target and novel stimuli were larger in the self-triggered condition than in the machine-triggered condition in which the stimuli were presented automatically with the same intervals as in the self-triggered condition. The effect was prominent at fronto-central scalp sites. When the timing of stimulus is unequivocal, a neural activity related to stimulus evaluation may increase and manifest itself as a large late positive ERP component.
DOI：
10.1016/s0013-4694(97)96053-3
发表时间：
1997-08-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
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作者：
Cycowicz, YM;Friedman, D
通讯作者：
Friedman, D