Maglione A G, Scorpecci A, Malerba P, Marsella P, Giannantonio S, Colosimo A, Babiloni F, Vecchiato G
Giovanni Vecchiato, PhD, Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy, E-mail:
Methods Inf Med. 2015;54(6):500-4. doi: 10.3414/ME15-01-0005. Epub 2015 May 13.
The aim of the present study is to investigate the variations of the electroencephalographic (EEG) alpha rhythm in order to measure the appreciation of bilateral and unilateral young cochlear implant users during the observation of a musical cartoon. The cartoon has been modified for the generation of three experimental conditions: one with the original audio, another one with a distorted sound and, finally, a mute version.
The EEG data have been recorded during the observation of the cartoons in the three experimental conditions. The frontal alpha EEG imbalance has been calculated as a measure of motivation and pleasantness to be compared across experimental populations and conditions.
The EEG frontal imbalance of the alpha rhythm showed significant variations during the perception of the different cartoons. In particular, the pattern of activation of normal-hearing children is very similar to the one elicited by the bilateral implanted patients. On the other hand, results related to the unilateral subjects do not present significant variations of the imbalance index across the three cartoons.
The presented results suggest that the unilateral patients could not appreciate the difference in the audio format as well as bilaterally implanted and normal hearing subjects. The frontal alpha EEG imbalance is a useful tool to detect the differences in the appreciation of audiovisual stimuli in cochlear implant patients.
本研究旨在调查脑电图（EEG）阿尔法节律的变化，以衡量双侧和单侧年轻人工耳蜗使用者在观看音乐卡通片时的感受。该卡通片已被修改以生成三种实验条件：一种是原始音频，另一种是失真声音，最后是静音版本。
在三种实验条件下观看卡通片时记录EEG数据。计算额叶阿尔法EEG失衡作为动机和愉悦度的指标，以便在不同实验人群和条件之间进行比较。
在感知不同卡通片时，阿尔法节律的EEG额叶失衡表现出显著变化。特别是，听力正常儿童的激活模式与双侧植入患者引发的模式非常相似。另一方面，单侧受试者的结果在三部卡通片中失衡指数没有显著变化。
呈现的结果表明，单侧患者无法像双侧植入和听力正常的受试者那样感知音频格式的差异。额叶阿尔法EEG失衡是检测人工耳蜗患者视听刺激感受差异的有用工具。
