...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Neurophysiology >Increased preparation time reduces, but does not abolish, action history bias of saccadic eye movements
【24h】

Increased preparation time reduces, but does not abolish, action history bias of saccadic eye movements

机译：增加的准备时间减少，但不会废除，行动历史偏见扫视眼球运动

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The characteristics of movements are strongly history-dependent. Marinovic et al. (Marinovic W, Poh E, de Rugy A, Carroll TJ. eLife 6: e26713, 2017) showed that past experience influences the execution of limb movements through a combination of temporally stable processes that are strictly use dependent and dynamically evolving and context-dependent processes that reflect prediction of future actions. Here we tested the basis of history-dependent biases for multiple spatiotemporal features of saccadic eye movements under two preparation time conditions (long and short). Twenty people performed saccades to visual targets. To prompt context-specific expectations of most likely target locations, 1 of 12 potential target locations was specified on similar to 85% of the trials and each remaining target was presented on similar to 1% trials. In long preparation trials participants were shown the location of the next target 1 s before its presentation onset, whereas in short preparation trials each target was first specified as the cue to move. Saccade reaction times and direction were biased by recent saccade history but according to distinct spatial tuning profiles. Biases were purely expectation related for saccadic reaction times, which increased linearly as the distance from the repeated target location increased when preparation time was short but were similar to all targets when preparation time was long. By contrast, the directions of saccades were biased toward the repeated target in both preparation time conditions, although to a lesser extent when the target location was precued (long preparation). The results suggest that saccade history affects saccade dynamics via both use- and expectation-dependent mechanisms and that movement history has dissociable effects on reaction time and saccadic direction.
机译：运动的特征是历史依赖性的强烈。 Marinovic等人。 （Marinovic W，Poh E，De Rugy A，Carroll TJ。Elife 6：E26713,2017）显示过去的经验通过时间上稳定的过程的组合来影响肢体运动，这些过程严格使用依赖性和动态发展和依赖于上下文的发展反映未来行动预测的过程。在这里，我们在两种准备时间条件（长短短路）下进行扫视眼球运动的多个时空特征的历史依赖性偏差的基础。二十人对视觉目标进行了扫视。为了提示对最有可能的目标位置的上下文特定期望，指定了12个潜在目标地点的1个，类似于85％的试验，并且每个剩余目标都有类似于1％的试验。在长时间制备试验中，参与者显示在其呈现前的下一个目标1s的位置，而在短时间制备试验中，每个目标首先被指定为提示移动。扫视反应时间和方向被最近的扫视历史偏置，但根据不同的空间调谐曲线。偏差纯粹是对扫视反应时间相关的预期，随着从制备时间短但是当准备时间长时间与来自重复目标位置的距离增加而导致线性增加。相反，扫视方向在两种制备时间条件下朝向重复的靶标偏向，尽管在预测目标位置时在较小程度上（长制剂）。结果表明，扫视历史通过使用和期望依赖的机制影响扫视动力学，并且运动历史对反应时间和扫视方向具有可解释的影响。

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