Combined expectancies: electrophysiological evidence for the adjustment of expectancy effects.
Combined expectancies: electrophysiological evidence for the adjustment of expectancy effects.
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DOI：
10.1186/1471-2202-7-37
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发表时间：
2006-05-04
期刊：
影响因子：
2.4
通讯作者：
Münte TF
中科院分区：
文献类型：
--
作者：
Mattler U;van der Lugt A;Münte TF
当受试者使用线索为可能的刺激或可能的反应做准备时，有效的线索会促进反应时间，但无效的线索会延长反应时间。在关于综合预期效应的研究中，两个线索可以独立地提供关于即将到来的任务的两个维度的信息。在某些情况下，当一个维度上的提示无效时，另一个维度上的提示效果会降低。根据调整后的预期模型，线索影响不同的加工水平，并假设了一种机制，该机制对早期水平的线索有效性敏感，并导致对较晚水平的预期效应的在线调整。为了检验这一模型的预测能力，我们将刺激通道的线索与反应线索相结合。行为测量显示线索效应存在交互作用。侧化准备就绪电位(LRP)和N200波幅的电生理测量证实了该模型的预测。当通道线索有效而不是无效时，LRP表现出更大的反应线索对反应激活的影响。N200波幅在有效通道线索和无效反应线索下最大，在无效通道线索下最小，在两个有效线索下最小。研究结果支持这一观点，即早期水平期望的有效性调节了晚期水平期望的影响，在本研究中包括反应激活和反应冲突。
When subjects use cues to prepare for a likely stimulus or a likely response, reaction times are facilitated by valid cues but prolonged by invalid cues. In studies on combined expectancy effects, two cues can independently give information regarding two dimensions of the forthcoming task. In certain situations, cueing effects on one dimension are reduced when the cue on the other dimension is invalid. According to the Adjusted Expectancy Model, cues affect different processing levels and a mechanism is presumed which is sensitive to the validity of early level cues and leads to online adjustment of expectancy effects at later levels. To examine the predictions of this model cueing of stimulus modality was combined with response cueing. Behavioral measures showed the interaction of cueing effects. Electrophysiological measures of the lateralized readiness potential (LRP) and the N200 amplitude confirmed the predictions of the model. The LRP showed larger effects of response cues on response activation when modality cues were valid rather than invalid. N200 amplitude was largest with valid modality cues and invalid response cues, medium with invalid modality cues, and smallest with two valid cues. Findings support the view that the validity of early level expectancies modulates the effects of late level expectancies, which included response activation and response conflict in the present study.
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DOI：
10.1080/14640749208401284
发表时间：
1992-01-01
期刊：
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY SECTION A-HUMAN EXPERIMENTAL PSYCHOLOGY
影响因子：
--
作者：
KINGSTONE, A
通讯作者：
KINGSTONE, A
影响因子：
4.1
作者：
Leuthold, H;Sommer, W;Ulrich, R
通讯作者：
Ulrich, R
影响因子：
2.6
作者：
COLES, MGH;GRATTON, G;DONCHIN, E
通讯作者：
DONCHIN, E
DOI：
10.1080/02724988743000033
发表时间：
1987-02-01
期刊：
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY SECTION A-HUMAN EXPERIMENTAL PSYCHOLOGY
影响因子：
--
作者：
LAMBERT, A
通讯作者：
LAMBERT, A
DOI：
10.1080/02724980343000161
发表时间：
2004-02-01
期刊：
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY SECTION A-HUMAN EXPERIMENTAL PSYCHOLOGY
影响因子：
--
作者：
Mattler, U
通讯作者：
Mattler, U