Neural consequences of binaural beat stimulation on auditory sentence comprehension: an EEG study

听力学 立体声录音 判决 脑电图 两分听 心理学 刺激 理解力 积极倾听 语音识别 沟通 神经科学 医学 计算机科学 人工智能 程序设计语言
作者
Jeahong Kim,Hyun‐Woong Kim,Jessica Kovar,Yune Sang Lee
出处
期刊:Cerebral Cortex [Oxford University Press]
被引量:1
标识
DOI:10.1093/cercor/bhad459
摘要

Abstract A growing literature has shown that binaural beat (BB)—generated by dichotic presentation of slightly mismatched pure tones—improves cognition. We recently found that BB stimulation of either beta (18 Hz) or gamma (40 Hz) frequencies enhanced auditory sentence comprehension. Here, we used electroencephalography (EEG) to characterize neural oscillations pertaining to the enhanced linguistic operations following BB stimulation. Sixty healthy young adults were randomly assigned to one of three listening groups: 18-Hz BB, 40-Hz BB, or pure-tone baseline, all embedded in music. After listening to the sound for 10 min (stimulation phase), participants underwent an auditory sentence comprehension task involving spoken sentences that contained either an object or subject relative clause (task phase). During the stimulation phase, 18-Hz BB yielded increased EEG power in a beta frequency range, while 40-Hz BB did not. During the task phase, only the 18-Hz BB resulted in significantly higher accuracy and faster response times compared with the baseline, especially on syntactically more complex object-relative sentences. The behavioral improvement by 18-Hz BB was accompanied by attenuated beta power difference between object- and subject-relative sentences. Altogether, our findings demonstrate beta oscillations as a neural correlate of improved syntactic operation following BB stimulation.
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