Subconcussion revealed by sound processing in the brain.
Subconcussion revealed by sound processing in the brain.
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DOI：
10.1249/esm.0000000000000011
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发表时间：
2023
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我们测试了一种假设，即听觉处理的客观测量揭示了不符合脑震荡临床定义的头部创伤病史。第一组大学生运动员(n=709)参加19个项目，根据他们所从事的运动，采用“接触性”(317名男性，212名女性)和“非接触性”(58名男性，122名女性)的流行分类进行分组。参与者使用对语音的频率跟随反应(FFR)进行评估。对与语音刺激的基频(F0)相对应的频段内FFR活动的幅度进行了严格的检查，这是脑震荡患者的一种结果。我们发现接触水平和性别是主要影响因素。接触性运动员的FFR-F0小于非接触性运动员，女性大于男性。存在性交接触，接触组男性的FFR-F0小于其他三组。二次分析发现，男性运动员的FFR-F0与参加接触性运动的时间长短有关。这些发现表明，在没有脑震荡但运动中经常进行身体接触的人中，可以观察到大脑感觉处理的中断。这一证据表明，大脑中的声音处理是运动员亚脑震荡的客观标志。
We tested the hypothesis that an objective measure of auditory processing reveals a history of head trauma that does not meet the clinical definition of concussion. Division I collegiate student-athletes (n = 709) across 19 sports were divided into groups, based on their sport, using prevailing classifications of “contact” (317 males, 212 females) and “noncontact” (58 males, 122 females). Participants were evaluated using the frequency-following response (FFR) to speech. The amplitude of FFR activity in a frequency band corresponding to the fundamental frequency (F0)—the voice pitch—of the speech stimulus, an outcome reduced in individuals with concussions, was critically examined. We found main effects of contact level and sex. The FFR-F0 was smaller in contact athletes than noncontact athletes and larger in females than males. There was a contact by sex interaction, with the FFR-F0 of males in the contact group being smaller than the three other groups. Secondary analyses found a correlation between FFR-F0 and length of participation in contact sports in male athletes. These findings suggest that the disruption of sensory processing in the brain can be observed in individuals without a concussion but whose sport features regular physical contact. This evidence identifies sound processing in the brain as an objective marker of subconcussion in athletes.