Spatial Attention and Temporal Expectation Exert Differential Effects on Visual and Auditory Discrimination.
Spatial Attention and Temporal Expectation Exert Differential Effects on Visual and Auditory Discrimination.
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DOI：
10.1162/jocn_a_01567
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发表时间：
2020-08
影响因子：
3.2
通讯作者：
Haegens S
中科院分区：
文献类型：
--
作者：
Wilsch A;Mercier MR;Obleser J;Schroeder CE;Haegens S
对即将到来的刺激的预期塑造了感觉系统的状态，优化了神经和行为反应。在这里，我们研究了脑振荡在介导空间和时间预期中的作用。由于空间注意力和时间期望往往与视觉和听觉处理，分别，我们直接对比的视觉和听觉方式，并询问这些预期机制是否在这两个领域是相似的。我们记录了健康的人类参与者进行听觉和视觉目标的歧视任务，其中跨模态线索提供了时间和空间信息，即将到来的刺激呈现脑磁图。受先前研究结果的启发，我们特别感兴趣的是δ（1-3 Hz）和α（8- 1 - 3 Hz）波段振荡状态，以预期目标呈现及其对任务绩效的影响。我们的研究结果支持这样的观点，即空间注意在视觉领域有更强的影响，而时间期望效应在听觉领域更为突出。对于空间注意操作，我们发现视觉系统中存在一种典型的α偏侧化模式，这种模式与反应速度相关。提供一个有节奏的时间线索导致增加postcue同步的低频节奏，虽然这种效果是更宽的性质，这表明一般的相位重置，而不是频率特定的神经夹带。此外，我们观察到三角带同步与额叶地形，这与性能，特别是在听觉任务。结合起来，这些研究结果表明，空间和时间的预期通过自上而下的低频振荡的功率和相位调制，分别。
Anticipation of an impending stimulus shapes the state of the sensory systems, optimizing neural and behavioral responses. Here, we studied the role of brain oscillations in mediating spatial and temporal anticipations. Because spatial attention and temporal expectation are often associated with visual and auditory processing, respectively, we directly contrasted the visual and auditory modalities and asked whether these anticipatory mechanisms are similar in both domains. We recorded the magnetoencephalogram in healthy human participants performing an auditory and visual target discrimination task, in which cross-modal cues provided both temporal and spatial information with regard to upcoming stimulus presentation. Motivated by prior findings, we were specifically interested in delta (1–3 Hz) and alpha (8–13 Hz) band oscillatory state in anticipation of target presentation and their impact on task performance. Our findings support the view that spatial attention has a stronger effect in the visual domain, whereas temporal expectation effects are more prominent in the auditory domain. For the spatial attention manipulation, we found a typical pattern of alpha lateralization in the visual system, which correlated with response speed. Providing a rhythmic temporal cue led to increased postcue synchronization of low-frequency rhythms, although this effect was more broadband in nature, suggesting a general phase reset rather than frequency-specific neural entrainment. In addition, we observed delta-band synchronization with a frontal topography, which correlated with performance, especially in the auditory task. Combined, these findings suggest that spatial and temporal anticipations operate via a top-down modulation of the power and phase of low-frequency oscillations, respectively.
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DOI：
10.1523/jneurosci.1338-11.2011
发表时间：
2011-07-06
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Fiebelkorn IC;Foxe JJ;Butler JS;Mercier MR;Snyder AC;Molholm S
通讯作者：
Molholm S
DOI：
10.1523/jneurosci.2164-11.2011
发表时间：
2011-12-14
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Gomez-Ramirez M;Kelly SP;Molholm S;Sehatpour P;Schwartz TH;Foxe JJ
通讯作者：
Foxe JJ
影响因子：
9.8
作者：
Auksztulewicz R;Friston KJ;Nobre AC
通讯作者：
Nobre AC
影响因子：
5.3
作者：
Busch, Niko A.;Dubois, Julien;VanRullen, Rufin
通讯作者：
VanRullen, Rufin
额叶网络中的动态相互作用是有节奏的空间关注的基础。
影响因子：
16.2
作者：
Fiebelkorn IC;Pinsk MA;Kastner S
通讯作者：
Kastner S