...
首页> 外文期刊>Current Opinion in Neurobiology >Dissociating explicit timing from temporal expectation with fMRI.
【24h】

Dissociating explicit timing from temporal expectation with fMRI.

机译:使用fMRI将明确的时间预期与时间预期分离。

获取原文
获取原文并翻译 | 示例
           

摘要

Explicit timing is engaged whenever subjects make a deliberate estimate of discrete duration in order to compare it with a previously memorised standard. Conversely, implicit timing is engaged, even without a specific instruction to time, whenever sensorimotor information is temporally structured and can be used to predict the duration of future events. Both emergent timing (motor) and temporal expectation (perceptual) are forms of implicit timing. Recent fMRI studies demonstrate discrete neural substrates for explicit and implicit timing. Specifically, basal ganglia are activated almost invariably by explicit timing, with co-activation of prefrontal, premotor and cerebellar areas being more context-dependent. Conversely, implicit perceptual timing (or "temporal expectation") recruits cortical action circuits, comprising inferior parietal and premotor areas, highlighting its role in the optimisation of prospective behaviour.
机译:每当受试者对离散时间进行故意的估计时,都要进行明确的计时,以便将其与以前存储的标准进行比较。相反,每当感觉运动信息在时间上被结构化并且可以用来预测未来事件的持续时间时,即使没有特定的时间指令,也会采用隐式计时。出现时间(运动)和时间期望(感知)都是隐式时间的形式。最近的功能磁共振成像研究表明,离散神经底物可用于显式和隐式计时。具体来说,基底神经节几乎总是通过明确的时机激活,前额,运动前和小脑区域的共同激活更加依赖于上下文。相反,内隐的感知时机(或“时间期望”)会吸引皮质动作回路,包括顶下壁和运动前区域,突出了其在优化预期行为中的作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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