在真实和虚拟环境中比较听觉距离感知和噪音提示的作用:基于事件相关潜力的研究
Benjamin Stodt1, Daniel Neudek2, Stephan Getzmann1
1Leibniz Research Centre for Working Environment and Human Factors at the TU Dortmund (IfADo), Ardeystraße 67, Dortmund 44139, Germany.
Hearing research
|February 13, 2024
概括
这项研究发现,虽然大脑在现实和虚拟现实中类似地处理声音距离,但准确的声音强度感知对于在虚拟环境中表现良好至关重要.
科学领域:
- 听觉感知是一种听觉感知.
- 虚拟现实声学 虚拟现实声学
- 神经科学是一个神经科学.
背景情况:
- 在现实和虚拟环境中,准确的声音距离感知是至关重要的.
- 虚拟现实 (VR) 为声学模拟提供了潜力,但在复制距离线索方面面临挑战.
- 了解VR中距离感知的神经认知相关性是必不可少的.
研究的目的:
- 为了比较行为和脑电图 (EEG) 结果,在真实与虚拟环境中检测声音距离变化.
- 调查噪音操纵对两种环境中的距离感知的影响.
- 在虚拟和真实声学环境中评估神经认知处理,包括不匹配负面性 (MMN),P3a和P3b.
主要方法:
- 在现实和虚拟反响环境中使用了带有EEG的活跃听觉奇怪范式.
- 参与者 (N=20) 使用操纵杆检测到声音源距离 (近,中,远) 的变化.
- 听觉刺激的声音强度要么是自然的,要么在所有模拟的源位置上都匹配.
主要成果:
- 目标声音距离的行为检测在虚拟环境中减少,特别是与匹配的声音强度相匹配.
- 脑电图分析显示,在各种环境中,神经认知模式 (MMN,P3a,P3b) 具有相似性,VR中的延迟变化较小.
- 噪音操纵在VR中显著影响了行为表现,但并没有影响EEG模式.
结论:
- 声音距离变化的神经认知处理在现实环境和虚拟环境之间在很大程度上是相当的.
- 准确的音量表示对于在虚拟声环境中实现高任务性能至关重要.
- 虚拟现实对研究听觉感知充满希望,前提是像声音强度这样的关键感官线索被精心染.
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