...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Neurophysiology >Task context determines whether common or separate inhibitory signals underlie the control of eye-hand movements
【24h】

Task context determines whether common or separate inhibitory signals underlie the control of eye-hand movements

机译：任务上下文确定是否普通或单独的抑制信号底部控制眼球运动的控制

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

Whereas inhibitory control of single effector movements has been widely studied, the control of coordinated eye-band movements has received less attention. Nevertheless, previous studies have contradictorily suggested that either a common or separate signal/s is/are responsible for inhibition of coordinated eye-hand movements. In continuation of our previous study. we varied behavioral contexts and used a stochastic accumulation-to-threshold model, which predicts a scaling of the mean reaction time distribution with its variance, to study the inhibitory control of eye-hand movements. Participants performed eye-hand movements in different task conditions, and in each condition they had to redirect movements in a fraction of trials. Task contexts where the behavior could be best explained by a common initiation signal had similar error responses for eye and hand, despite having different mean reaction times, indicating a common inhibitory signal. In contrast, behavior that could be best explained by separate initiation signals had dissimilar error responses for eye and hand indicating separate inhibitory signals. These behavioral responses were further validated using electromyography and computational models having either a common or separate inhibitory control signal/s. Interestingly, in a particular context, whereas in majority trials a common initiation and inhibitory signal could explain the behavior, in a subset of trials separate initiation and inhibitory signals predicted the behavior better. This highlights the flexibility that exists in the brain and in effect reconciles the heterogeneous results reported by previous studies.
机译：虽然对单一效应器运动的抑制控制已被广泛研究，但对协调的戒指运动的控制受到更少的关注。然而，以前的研究已经矛盾地建议，常见或单独的信号/ s是/负责抑制协调的眼睛手动运动。在继续我们以前的研究中。我们改变了行为背景并使用了随机累积对阈值模型，其预测了与其方差的平均反应时间分布的缩放，以研究眼球运动的抑制控制。参与者在不同的任务条件下进行了眼球运动，并且在每个条件下，他们必须在一小部分试验中重定向运动。尽管具有不同的平均反应时间，但是对于眼睛和手的最佳误差响应具有类似的误差响应的任务背景，尽管具有不同的平均反应时间，表明常见的抑制信号。相反，单独发起信号可以最好地解释的行为具有对眼睛和手表示单独的抑制信号的不同误差响应。使用具有常见或单独抑制控制信号/ s的电灰度摄影和计算模型进一步验证这些行为响应。有趣的是，在特定的背景下，而在多数试验中，常见的起始和抑制信号可以解释行为，在试验的子集中，单独的启动和抑制信号更好地预测行为。这突出了大脑中存在的灵活性，并且效果调整了以前研究报告的异质结果。

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