Medical University of Hanover, Hanover, Germany.
Cluster of Excellence Hearing4all, Germany.
PLoS One. 2020 Jul 6;15(7):e0235435. doi: 10.1371/journal.pone.0235435. eCollection 2020.
In this clinical study, stereo perception of music samples and its contribution to music enjoyment in CI users is investigated. It is studied in free field as well as direct audio presentation.
20 bilateral and 9 bimodal CI users performed stereo detection tests and music enjoyment ratings. Music was presented either in mono or in stereo in free field or with direct audio presentation. Stereo detection was assessed with a 3-AFC paradigm. Music enjoyment was studied with scale ratings.
For bilateral CI users, stereo detection increased from 52% correct in free field to 86% with direct audio presentation. Increased music enjoyment with improved stereo detection was obtained. Bimodal CI users could not identify stereo sounds. Music enjoyment did not increase for stereo presentations in bimodal subjects.
For bilateral CI users, improved stereo detection might increase music enjoyment with direct audio presentation, which is likely due to bypassing the room acoustics. In bimodal CI users, no clear improvement was found, which is likely attributed due to the different hearing losses and therefore individually different interaural frequency overlaps between the hearing aid and the cochlear implant.
Direct audio presentation is an efficient method to improve music enjoyment in bilateral CI users.
本临床研究旨在调查音乐样本的立体感知及其对人工耳蜗使用者音乐享受的贡献。研究在自由场和直接音频呈现条件下进行。
20 名双侧和 9 名双侧加人工听觉装置（bimodal CI）使用者进行了立体检测测试和音乐享受评分。音乐在自由场中以单声道或立体声呈现，或通过直接音频呈现。立体检测采用 3-AFC 范式评估。音乐享受通过量表评分进行研究。
对于双侧人工耳蜗使用者，立体检测的正确率从自由场的 52%提高到直接音频呈现时的 86%。随着立体检测的改善，音乐享受也增加了。双侧加人工听觉装置使用者无法识别立体声声音。对于双侧加人工听觉装置使用者，立体呈现并没有增加音乐享受。
对于双侧人工耳蜗使用者，立体检测的改善可能通过绕过房间声学，提高直接音频呈现时的音乐享受。对于双侧加人工听觉装置使用者，没有明显的改善，这可能归因于不同的听力损失，因此助听器和人工耳蜗之间的个体间的听觉频率重叠不同。
直接音频呈现是提高双侧人工耳蜗使用者音乐享受的有效方法。
