首页> 美国卫生研究院文献>Human Brain Mapping >Temporal cues trick the visual and auditory cortices mimicking spatial cues in blind individuals
【2h】

Temporal cues trick the visual and auditory cortices mimicking spatial cues in blind individuals

机译:时间提示欺骗了视觉和听觉皮层模仿了盲人的空间提示

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。

摘要

In the absence of vision, spatial representation may be altered. When asked to compare the relative distances between three sounds (i.e., auditory spatial bisection task), blind individuals demonstrate significant deficits and do not show an event‐related potential response mimicking the visual C1 reported in sighted people. However, we have recently demonstrated that the spatial deficit disappears if coherent time and space cues are presented to blind people, suggesting that they may use time information to infer spatial maps. In this study, we examined whether the modification of temporal cues during space evaluation altered the recruitment of the visual and auditory cortices in blind individuals. We demonstrated that the early (50–90 ms) occipital response, mimicking the visual C1, is not elicited by the physical position of the sound, but by its virtual position suggested by its temporal delay. Even more impressively, in the same time window, the auditory cortex also showed this pattern and responded to temporal instead of spatial coordinates.
机译:在没有视觉的情况下,空间表示可能会改变。当被要求比较三种声音之间的相对距离(即听觉空间平分任务)时,盲人表现出明显的缺陷,并且没有表现出与事件相关的潜在反应,类似于视觉人群中报道的视觉C1。但是,我们最近证明,如果向盲人呈现连贯的时间和空间提示,则空间不足会消失,这表明他们可能使用时间信息来推断空间图。在这项研究中,我们检查了空间评估过程中时间线索的改变是否改变了盲人视觉和听觉皮质的募集。我们证明了模仿视觉C1的早期(50-90µms)枕骨反应不是由声音的物理位置引起的,而是由其时间延迟暗示的虚拟位置引起的。更令人印象深刻的是,在同一时间窗口中,听觉皮层也显示了这种模式,并响应了时间而不是空间坐标。

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