• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>The Journal of Neuroscience >Electrical Neuroimaging of Voluntary Audiospatial Attention: Evidence for a Supramodal Attention Control Network
【2h】

Electrical Neuroimaging of Voluntary Audiospatial Attention: Evidence for a Supramodal Attention Control Network

机译：自愿性音频空间注意的电神经影像学：超模态注意控制网络的证据

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Previous attempts to investigate the supramodal nature of attentional control have focused primarily on identifying neuroanatomical overlap in the frontoparietal systems activated during voluntary shifts of spatial attention in different sensory modalities. However, the activation of the same neural structures is insufficient evidence for a supramodal system, as the same brain regions could interact with one another in very different ways during shifts of attention in different modalities. Thus, to explore the similarity of the functional networks, it is necessary to identify the neural structures involved and to examine the timing and sequence of activities within the network. To this end, we used an electrical neuroimaging technique to localize the neural sources of electroencephalographic signals recorded from human subjects during audiospatial shifts of attention and to examine the timing and sequence of activities within several regions of interest. We then compared the results to an analogous study of visuospatial attention shifts. Similar frontal and parietal regions were activated during visual and auditory shifts of attention, and the timing of activities within these regions was nearly identical. Following this modality-independent sequence of attention-control activity, activity in the relevant sensory cortex was enhanced in anticipation of the response-relevant target. These results are consistent with the hypothesis that a single supramodal network of frontal and parietal regions mediates voluntary shifts of spatial attention and controls the flow of sensory information in modality-specific sensory pathways.
机译：先前研究注意力控制的超模态性质的尝试主要集中于识别在不同感觉方式中空间注意力的自愿转移过程中激活的额顶额叶系统中的神经解剖学重叠。但是，相同的神经结构的激活不足以证明一种超模态系统，因为在不同模态的注意力转移过程中，相同的大脑区域可能以非常不同的方式彼此交互。因此，为了探索功能网络的相似性，有必要确定所涉及的神经结构，并检查网络内活动的时间和顺序。为此，我们使用了电神经成像技术来定位在注意力的音频空间转移过程中从人类对象记录的脑电图信号的神经源，并检查几个感兴趣区域内活动的时间和顺序。然后，我们将结果与视觉空间注意力转移的类似研究进行了比较。在注意力的视觉和听觉转移过程中激活了类似的额叶和顶叶区域，这些区域内的活动时间几乎相同。遵循这种与模式无关的注意力控制活动序列，在预期与反应相关的目标中，相关感觉皮层中的活动得以增强。这些结果与这样的假说是一致的：额叶和顶叶区域的单一超模态网络介导了空间注意力的自愿转移，并控制了模态特异性感觉途径中的感觉信息流。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号