Anticipatory neural dynamics of spatial-temporal orienting of attention in younger and older adults.
Anticipatory neural dynamics of spatial-temporal orienting of attention in younger and older adults.
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DOI：
10.1016/j.neuroimage.2018.05.002
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发表时间：
2018-09
期刊：
影响因子：
5.7
通讯作者：
Nobre AC
中科院分区：
文献类型：
--
作者：
Heideman SG;Rohenkohl G;Chauvin JJ;Palmer CE;van Ede F;Nobre AC
空间和时间的期望协同作用，以促进视觉感知。在目前的研究中，我们试图调查的预期振荡标记相结合的时空定向，并测试这些是否随着年龄的增长而下降。我们使用脑磁图（MEG）研究了年轻人和老年人的预期神经动力学与联合时空定向的注意力。参与者进行了一个线索的隐蔽时空定向任务，需要的视觉目标的歧视。这些提示指示了目标将在何时何地出现。在这两个年龄组中，有效的时空线索显着提高感知灵敏度和减少反应时间。在MEG数据中，空间定向的主要影响是后α和β振荡的偏侧化预期调制。与以前的报告相反，这种调制在老年人中没有减弱;相反，它甚至更明显。时间定向的主要效应是对后α和β振荡的双侧抑制。这种影响仅限于年轻人。我们的研究结果还揭示了一个惊人的相互作用之间的预期空间和时间的定向在伽玛波段（60-75赫兹）。当单独考虑两个年龄组时，这种影响只在老年人中明显存在，并且只在老年人中存在统计评估。总之，这些观察提供了几个新的见解，支持单独的神经动力学以及空间和时间的注意力定向的综合影响，并建议不同的神经动力学与注意力定向出现差异敏感的老化。年轻人和老年人都受益于线索时空期望。与空间期望相关的α和β偏侧化在老年人中得到保留甚至加强。时间预期调节年轻人而不是老年人α振荡的减少。结合时空的期望增加对侧伽马振荡老年人。不同的预期神经动力学可能对衰老敏感。
Spatial and temporal expectations act synergistically to facilitate visual perception. In the current study, we sought to investigate the anticipatory oscillatory markers of combined spatial-temporal orienting and to test whether these decline with ageing. We examined anticipatory neural dynamics associated with joint spatial-temporal orienting of attention using magnetoencephalography (MEG) in both younger and older adults. Participants performed a cued covert spatial-temporal orienting task requiring the discrimination of a visual target. Cues indicated both where and when targets would appear. In both age groups, valid spatial-temporal cues significantly enhanced perceptual sensitivity and reduced reaction times. In the MEG data, the main effect of spatial orienting was the lateralised anticipatory modulation of posterior alpha and beta oscillations. In contrast to previous reports, this modulation was not attenuated in older adults; instead it was even more pronounced. The main effect of temporal orienting was a bilateral suppression of posterior alpha and beta oscillations. This effect was restricted to younger adults. Our results also revealed a striking interaction between anticipatory spatial and temporal orienting in the gamma-band (60–75 Hz). When considering both age groups separately, this effect was only clearly evident and only survived statistical evaluation in the older adults. Together, these observations provide several new insights into the neural dynamics supporting separate as well as combined effects of spatial and temporal orienting of attention, and suggest that different neural dynamics associated with attentional orienting appear differentially sensitive to ageing. Both younger and older adults benefit from cued spatial-temporal expectation. Alpha and beta lateralisation linked to spatial expectation is preserved and even strengthened in older adults. Temporal expectation modulates decreases in alpha oscillations in younger but not older adults. Combined spatial-temporal expectation increases contralateral gamma oscillations in older adults. Different anticipatory neural dynamics may be differentially sensitive to ageing.
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影响因子：
16.2
作者：
Fries P
通讯作者：
Fries P
DOI：
10.1073/pnas.1011284108
发表时间：
2011-07-05
影响因子：
11.1
作者：
Buffalo, Elizabeth A.;Fries, Pascal;Desimone, Robert
通讯作者：
Desimone, Robert
影响因子：
5.7
作者：
Deiber, Marie-Pierre;Ibanez, Vicente;Giannakopoulos, Panteleimon
通讯作者：
Giannakopoulos, Panteleimon
影响因子：
3.2
作者：
Handel, Barbara F.;Haarmeier, Thomas;Jensen, Ole
通讯作者：
Jensen, Ole
DOI：
10.3758/bf03214307
发表时间：
1991-03-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
KAERNBACH, C
通讯作者：
KAERNBACH, C