人类听觉脑干和中等潜伏反应中的双耳相互作用受到声音频段,侧面化可预测性和辅助模式的影响
Kazunari Ikeda1, Tom A Campbell2
1Laboratory of Cognitive Psychophysiology, Tokyo Gakugei University, Koganei, Tokyo 184-8501, Japan.
Hearing research
|August 13, 2024
概括
这项关于听觉唤起潜力的研究发现,在双耳交互组件 (BIC) 幅度中低频声音的主导地位始于Na延迟. 选择性注意力会影响听觉脑干反应 (ABR),但不会影响中延迟反应 (MLR).
科学领域:
- 神经科学是一个神经科学.
- 听觉神经科学 听觉神经科学
- 精神声学是一种精神声学.
背景情况:
- 双耳交互组件 (BIC) 通过将双耳响应与单耳响应的总和进行比较来量化双耳听力.
- 了解整个听觉系统层面的BIC发展对于听觉处理研究至关重要.
研究的目的:
- 调查在听觉系统内BIC振幅中低频主导的开始.
- 检查BIC振幅如何与声音频率和侧面化可预测性不同.
- 为了确定选择性注意力对BIC在听觉脑干 (ABR) 和中等潜伏 (MLR) 响应中的影响.
主要方法:
- 使用重复测量设计,与16名参与者进行了测试.
- 刺激包括双耳或单耳呈现的低通道 (<1000 Hz) 或高通道 (>2000 Hz) 点击.
- 操纵的变量是横向化可预测性和辅助模式 (听觉或视觉).
主要成果:
- 在Na-BIC期间和之后出现了BIC振幅的低频主导,而二声波和总和单声波的振幅仅在Na波之后才出现主导.
- 在可预测的横向化低度和高度点击之间没有观察到相当的BIC振幅.
- 选择性注意力调节的ABR-BICs,但不是MLR-BICs.
结论:
- 在声音横向化中低频的优势源于Na的延迟.
- 这种低频优势似乎独立于外皮皮质 - 结肠道通路的影响.
- 研究结果突出显示,频率和注意力效应在不同的听觉通路水平上有不同的处理.
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