• The role of head movement in s...

Treffer: The role of head movement in sound localization compensation in individuals with single-sided deafness.

Title:
The role of head movement in sound localization compensation in individuals with single-sided deafness.
Authors:
Chen Y; Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, China., Zhu M; Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, China., Liu Q; Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, China., Qiao Y; Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, China., Yang J; Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, China., Shang Y; Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, China. Electronic address: yyingshang@aliyun.com.
Source:
Hearing research [Hear Res] 2025 Nov; Vol. 467, pp. 109409. Date of Electronic Publication: 2025 Aug 22.
Publication Type:
Journal Article
Language:
English
Journal Info:
Publisher: Elsevier/North-Holland Biomedical Press Country of Publication: Netherlands NLM ID: 7900445 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-5891 (Electronic) Linking ISSN: 03785955 NLM ISO Abbreviation: Hear Res Subsets: MEDLINE
Imprint Name(s):
Original Publication: Amsterdam, Elsevier/North-Holland Biomedical Press.
MeSH Terms:
Sound Localization* , Head Movements* , Hearing Loss, Unilateral*/physiopathology , Hearing Loss, Unilateral*/psychology , Hearing Loss, Unilateral*/diagnosis, Humans ; Male ; Female ; Acoustic Stimulation ; Adult ; Young Adult ; Cues ; Middle Aged ; Reaction Time ; Case-Control Studies ; Time Factors ; Adolescent
Contributed Indexing:
Keywords: Functional compensation; Horizontal orientation; Single-sided deafness; Sound localization; Spatial perception
Entry Date(s):
Date Created: 20250829 Date Completed: 20251031 Latest Revision: 20251031
Update Code:
20251101
DOI:
10.1016/j.heares.2025.109409
PMID:
40882584
Database:
MEDLINE

Weitere Informationen

The most important cues for sound-source localization in normal hearing (NH) individuals are interaural time differences (ITDs) and interaural level differences (ILDs), information that is lacking in patients with single-sided deafness (SSD). Findings from previous studies suggested that longer duration of deafness correlated with better ability of sound localization despite the sustained absence of these binaural cues in SSD patients. To investigate the role of head movements in the compensatory mechanisms of sound localization, we performed sound localization tests for patients with congenital SSD under both head-fixed and head-moveable conditions. A total of 35 congenital SSD patients and 33 NH individuals were included, and sound localization tests were performed in a horizontal 360° sound field using warble tones of 500 and 3000 Hz. The accuracy rate and root mean square (RMS) error of the deviation angle were calculated. Head movement significantly increased sound localization accuracy in both the SSD and NH groups, as evidenced by higher accuracy rates and lower RMS errors. Compared with the NH group, the SSD group presented significantly longer reaction times for both sound signals only under the head-movable condition. Compared with NH participants, SSD patients presented significantly greater differences in RMS errors and accuracy rates for 3000 Hz warble tones between the head-fixed and head-movable conditions. Our findings suggest that the differences in the received acoustic signals due to different head orientations provide important clues for sound localization in SSD patients and may be one of the crucial compensatory strategies.
(Copyright © 2025 Elsevier B.V. All rights reserved.)

Declaration of competing interest There are no conflicts of interest, financial, or otherwise.