This study compares event-related potentials (ERPs) elicited by variations of sound location in free and reverberant fields. The virtual sound sources located at azimuths $0°–40°$ were synthesized with head-related transfer functions and binaural room impulse responses for free and reverberant fields, respectively. The sound stimulus at 0° was assigned as standard in the oddball paradigm. Results show that the P3 amplitude is larger in the free field and acoustical conditions have no significant effect on the amplitudes of N2 and mismatch negativity. Moreover, a linear relationship between sound angle and amplitude of ERP components is observed.

中文翻译：

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自由和混响场中声音位置变化的比较：与事件相关的潜在研究。

这项研究比较了由自由和混响声场中声音位置变化引起的事件相关电位（ERP）。位于方位角的虚拟声源$0°–40°$分别用与头部相关的传递函数和对自由和混响场的双耳室冲激响应进行合成。0°处的声音刺激在奇数球范式中指定为标准。结果表明，P3振幅在自由场中较大，并且声学条件对N2振幅和失配负性没有明显影响。此外，观察到声角与ERP组件的振幅之间存在线性关系。