Acoustic Change Complex Evoked by Horizontal Sound Location Change in Young Adults With Normal Hearing.
Acoustic Change Complex Evoked by Horizontal Sound Location Change in Young Adults With Normal Hearing.
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听力正常的年轻人水平声音位置变化引起的声学变化综合体
DOI：
10.3389/fnins.2022.908989
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发表时间：
2022
影响因子：
4.3
通讯作者：
Zhang, Juan
中科院分区：
文献类型：
--
作者：
Fan, Zhi-Tong;Zhao, Zi-Hui;Sharma, Mridula;Valderrama, Joaquin T.;Fu, Qian-Jie;Liu, Jia-Xing;Fu, Xin;Li, Huan;Zhao, Xue-Lei;Guo, Xin-Yu;Fu, Luo-Yi;Wang, Ning-Yu;Zhang, Juan
关键词：
声学变化复合体（ACC）是由连续声音刺激的变化引起的皮层听觉诱发电位。本研究旨在探讨：（1）水平声音位置的改变是否可以引发ACC； (2)声音位置的变化与ACC的幅度或潜伏期之间的关系； (3)定位行为测量、最小可听角(MAA)和ACC之间的关系。共有 36 名听力正常的成年人参与了这项研究。声场内设置一个半径为1.2m的180°水平弧形支架，参与者坐在中心位置。 MAA 在两个替代的强制选择环境中进行测量。 ACC的客观脑电图记录是在±45°、±15°、±5°和±2°四组位置变化的情况下进行的。测试刺激是 1 秒、60 ± 2 dB SPL、间隔 2 秒的 125–6,000 Hz 宽带噪声。评估了 4 个位置下 ACC 的 N1'-P2' 幅度、N1' 潜伏期和 P2' 潜伏期。采用方差分析分析电极位置和声位变化方向对ACC波形的影响。结果表明：(1)通过改变水平声定位位置可以成功引出ACC。 ACC的诱发率随着位置变化的增加而增加。 (2)随着声音位置变化的增加，N1′-P2′振幅增大，N1′和P2′潜伏期减小。测试角度对 N1′–P2′ 振幅 [F(1.91,238.1) = 97.172, p < 0.001]、N1′ 潜伏期 [F(1.78,221.90) = 96.96, p < 0.001] 和 P2′ 潜伏期 [F(1.87,233.11) = 79.97, p < 的影响0.001]显示有统计学意义。 (3) 声音位置变化的方向对 ACC 峰值幅度或延迟没有显着影响。 (4) ACC测试的声音位置辨别阈值(±5°处的引出率97.0%)高于MAA阈值(2.08±0.5°)。目前的研究结果表明，虽然ACC阈值高于MAA任务的行为阈值，但ACC可以作为评估声音定位能力的客观方法。本文讨论了这项研究对临床实践和定位技能评估的影响，尤其是对儿童的影响。
Acoustic change complex (ACC) is a cortical auditory-evoked potential induced by a change of continuous sound stimulation. This study aimed to explore: (1) whether the change of horizontal sound location can elicit ACC; (2) the relationship between the change of sound location and the amplitude or latency of ACC; (3) the relationship between the behavioral measure of localization, minimum audible angle (MAA), and ACC. A total of 36 normal-hearing adults participated in this study. A 180° horizontal arc-shaped bracket with a 1.2 m radius was set in a sound field where participants sat at the center. MAA was measured in a two-alternative forced-choice setting. The objective electroencephalography recording of ACC was conducted with the location changed at four sets of positions, ±45°, ±15°, ±5°, and ±2°. The test stimulus was a 125–6,000 Hz broadband noise of 1 s at 60 ± 2 dB SPL with a 2 s interval. The N1′–P2′ amplitudes, N1′ latencies, and P2′ latencies of ACC under four positions were evaluated. The influence of electrode sites and the direction of sound position change on ACC waveform was analyzed with analysis of variance. Results suggested that (1) ACC can be elicited successfully by changing the horizontal sound location position. The elicitation rate of ACC increased with the increase of location change. (2) N1′–P2′ amplitude increased and N1′ and P2′ latencies decreased as the change of sound location increased. The effects of test angles on N1′–P2′ amplitude [F(1.91,238.1) = 97.172, p < 0.001], N1′ latency [F(1.78,221.90) = 96.96, p < 0.001], and P2′ latency [F(1.87,233.11) = 79.97, p < 0.001] showed a statistical significance. (3) The direction of sound location change had no significant effect on any of the ACC peak amplitudes or latencies. (4) Sound location discrimination threshold by the ACC test (97.0% elicitation rate at ±5°) was higher than MAA threshold (2.08 ± 0.5°). The current study results show that though the ACC thresholds are higher than the behavioral thresholds on MAA task, ACC can be used as an objective method to evaluate sound localization ability. This article discusses the implications of this research for clinical practice and evaluation of localization skills, especially for children.
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