...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Neurophysiology >Somatosensory interactions reveal feature-dependent computations
【24h】

Somatosensory interactions reveal feature-dependent computations

机译：躯体感应互动揭示了特征依赖的计算

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

Our ability to perceive and discriminate textures is based on the processing of high-frequency vibrations generated on the fingertip as it scans across a surface. Although much is known about the processing of vibration amplitude and frequency information when cutaneous stimulation is experienced at a single location on the body, bow these stimulus features are processed when touch occurs at multiple locations is poorly understood. We evaluated participant's ability to discriminate tactile cues (100-300 Hz) on one hand while they ignored distractor cues experienced on their other hand. We manipulated the relative positions of the hands to characterize how limb position influenced cutaneous touch interactions. In separate experiments, participants judged either the frequency or intensity of mechanical vibrations. We found that vibrations experienced on one hand always systematically modulated the perception of vibrations on the other hand. Notably, bimanual interaction patterns and their sensitivity to hand locations differed according to stimulus feature. Somatosensory interactions in intensity perception were only marked by attenuation that was invariant to hand position manipulations. In contrast, interactions in frequency perception consisted of both bias and sensitivity changes that were more pronounced when the hands were held in close proximity. We implemented models to infer the neural computations that mediate somatosensory interactions in the intensity and frequency dimensions. Our findings reveal obligatory and feature-dependent somatosensory interactions that may be supported by both feature-specific and feature-general operations.
机译：我们的感知和辨别纹理的能力是基于处理指尖在触发器上产生的高频振动的处理。虽然当在体内的单个位置处经历皮肤刺激时，振动幅度和频率信息的处理很多，但是当在多个位置处发生触摸时，处理这些刺激特征的弯曲这些刺激特征很差。我们评估了参与者在一方面歧视触觉线索（100-300赫兹）的能力，而他们忽略了另一只手的患者。我们操纵手的相对位置，以表征如何影响皮肤触摸相互作用的肢体。在单独的实验中，参与者判断机械振动的频率或强度。我们发现一方面遇到的振动总是系统地调制振动的感知。值得注意的是，根据刺激特征，对手部的相互作用模式及其对手位置的敏感性不同。强度感知的躯体感觉互动互动仅被衰减标记为不变地手动位置操纵。相反，频率感知的相互作用由双手紧邻时更加明显的偏差和敏感性变化组成。我们实施了模型以推断出介导强度和频率尺寸中的躯体感应型相互作用的神经计算。我们的研究结果揭示了可能由特定特定和功能通用操作支持的强制性和特征依赖性躯体感应互动。

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