Behavioral Oscillations in Visual Attention Modulated by Task Difficulty.
Behavioral Oscillations in Visual Attention Modulated by Task Difficulty.
复制标题
任务难度调节视觉注意力的行为振荡
DOI：
10.3389/fpsyg.2017.01630
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发表时间：
2017
影响因子：
3.8
通讯作者：
Zhang M
中科院分区：
文献类型：
--
作者：
Chen A;Wang A;Wang T;Tang X;Zhang M
注意力的聚光灯充满了离散的时刻，并周期性地运作。近年来，视觉注意的行为振荡现象得到了广泛的研究，但其周期性不同。任务难度可能是引起注意周期模式不一致的一个重要因素。本研究探讨了视觉注意在困难和容易的任务中的行为振荡。使用了一种改进的高时间分辨率线索-靶范例，其中线索-靶刺激起始时间（SOA）以20 ms的步长从0.1变化到1.08 s。在困难条件下，目标检测的准确率为65%，在容易条件下，目标检测的准确率为75%。振荡模式进行了分析和观察的行为表现。在困难的版本中可以看到θ节律。然而，注意力振荡增加到一个更高的频率在简单的版本。任务难度与所有波段的功率呈负相关。我们的研究结果表明，当任务容易时，注意聚光灯切换得更快，而当任务困难时，为了获得更多的信息，注意聚光灯切换得更慢。注意聚光的灵活机制被证明，任务需求调制注意振荡。
The spotlight of attention is full of discrete moments and operates periodically. Recently, it has been well-documented there were behavioral oscillations in visual attention, however, different periodicities were demonstrated. Task difficulty may be an important factor causing disagreement in attentional periodic patterns. The present study examined behavioral oscillations in visual attention during difficult and easy tasks. A modified high temporal resolution cue-target paradigm in which the cue-target stimulus onset asynchrony (SOAs) varied from 0.1 to 1.08 s in steps of 20 ms was used. The target was detected with the accuracy of 65% in the difficult condition and 75% in the easy condition. Oscillatory patterns were analyzed and observed in behavioral performance. A theta rhythm was visible in the difficult version. However, attention oscillation increased to a higher frequency in the easy version. Task difficulty was negatively related to power for all bands. Our findings suggest that the attention spotlight switched faster when the task was easy, while, it switched much more slowly when the task was difficult in order to obtain more information. A flexible mechanism for attention spotlight was demonstrated, and task demand modulated attention oscillations.
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影响因子：
16.2
作者：
Fries P
通讯作者：
Fries P
影响因子：
4.6
作者：
Drewes J;Zhu W;Wutz A;Melcher D
通讯作者：
Melcher D
影响因子：
2.5
作者：
Boudreau, C. Elizabeth;Williford, Tori H.;Maunsell, John H. R.
通讯作者：
Maunsell, John H. R.
DOI：
10.3758/bf03208181
发表时间：
1990-05-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
ERIKSEN, CW;WEBB, JM;FOURNIER, LR
通讯作者：
FOURNIER, LR
影响因子：
9.2
作者：
Landau, Ayelet Nina;Schreyer, Helene Marianne;Fries, Pascal
通讯作者：
Fries, Pascal