通过回声识别物体:量化三维形状信息在回声定位,视觉和触觉之间进行的交叉传输
Santani Teng1, Caroline Danforth2,3, Nickolas Paternoster2,4
1Smith-Kettlewell Eye Research Institute, San Francisco, CA, United States.
Frontiers in neuroscience
|March 5, 2024
概括
盲人使用回声定位来通过声音感知物体. 这项研究表明,来自回声定位的信息转移到触摸,有助于对象的歧视,并且可与某种分辨率的视觉感知相提并论.
科学领域:
- 认知科学 认知科学
- 神经科学是一个神经科学.
- 感官感知是一种感官感知.
背景情况:
- 主动回声定位使盲人能够使用自我生成的声音和返回的回声来感知他们的环境.
- 了解声定位衍生的3D形状信息如何与触觉和视觉等其他感官集成,对于有效的对象交互至关重要.
研究的目的:
- 研究从声回声到其他感官,特别是触觉的物体级信息的交叉传输.
- 量化这种跨模式传输的分辨率,并将其与视觉感知进行比较.
主要方法:
- 使用延迟匹配样本任务,盲人专家和视力初学者使用回声定位来检查物体,然后进行触觉歧视.
- 视觉参与者还执行了触觉区分任务,使用新奇物体的模糊图像来等同视觉和回声声学感知.
主要成果:
- 盲人回声定位器对常见和新的物体都显示出突出的触觉歧视,表明成功的跨模式转移.
- 视觉参与者对熟悉的物体表现更好,这表明先前的知识有助于新手回声定位器.
- 视觉触觉区分性能与大约2.5°的视觉模糊内核的回声触觉区分相匹配,提供了回声声学信息质量的定量衡量标准.
结论:
- 通过回声定位感知到的对象信息有效地转移到盲人的触觉感.
- 回声触觉感知的分辨率与特定水平的视觉模糊度相当,为回声声学信息质量提供了一个基准.
- 通过了解感官替代的局限性和能力,这些发现可以为盲人辅助技术的发展提供信息.
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