Attentional orienting and reorienting is indicated by human event-related brain potentials
Attentional orienting and reorienting is indicated by human event-related brain potentials
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DOI：
10.1097/00001756-199810260-00003
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发表时间：
1998-10-26
期刊：
影响因子：
1.7
通讯作者：
Wolff, C
中科院分区：
文献类型：
--
作者：
Schröger, E;Wolff, C
我们研究了与事件相关的潜在迹象，以引导刺激的与任务无关、分散注意力的方面，以及随后重新引导刺激的与任务相关的方面。在三种条件下运行相同的实验方案来操纵声音的任务相关性。正如预期的那样，干扰物在每种情况下（即使声音被忽略）都会引发 MMN（反映大脑预先注意变化的检测），并在注意声音时引发随后的 N2b 和 P3（反映朝向干扰物的方向）。后期的消极情绪仅限于受试者区分长音和短音的情况，因为与任务无关的频率偏差而分散了注意力。 “重新定向消极性”（RON）可能反映了在分心后重新定向到与任务相关的刺激方面的过程。 (C) 1998 年利平科特威廉姆斯和威尔金斯。
WE investigated event-related potential indications for the orienting towards task-irrelevant, distracting aspects of stimulation and for the subsequent reorienting towards task-related aspects of stimulation. An identical experimental protocol was run in three conditions manipulating the task relevance of the sounds. As to be expected, distracters elicited the MMN (reflecting the brain's pre-attentive change detection) in each condition (even when the sounds were ignored) and subsequent N2b and P3 (reflecting orienting towards the distracter) when the sounds were attended. A late negativity was confined to a condition in which subjects discriminating long from short sounds were distracted by task-irrelevant frequency deviations. The 'reorienting negativity' (RON) probably reflects processes in the context of reorienting towards task-relevant aspects of stimulation following distraction. (C) 1998 Lippincott Williams & Wilkins.