Auditory Scene Analysis Deficits Across Dementia Subtypes: A Framework for Environmental Design

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Publicat a:Alzheimer's & Dementia vol. 21 (Dec 1, 2025)
Autor principal: Talebzadeh, Arezoo
Altres autors: Botteldooren, Dick
Publicat:
John Wiley & Sons, Inc.
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Accés en línia:Citation/Abstract
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LEADER 00000nab a2200000uu 4500
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022 |a 1552-5260 
022 |a 1552-5279 
024 7 |a 10.1002/alz70858_098774  |2 doi 
035 |a 3286565018 
045 0 |b d20251201 
100 1 |a Talebzadeh, Arezoo  |u University Ghent, Ghent, Flanders, Belgium, 
245 1 |a Auditory Scene Analysis Deficits Across Dementia Subtypes: A Framework for Environmental Design 
260 |b John Wiley & Sons, Inc.  |c Dec 1, 2025 
513 |a Journal Article 
520 3 |a Background Auditory Scene Analysis (ASA), the brain's ability to organize and interpret complex acoustic environments (Bragman, 1993), is differentially impaired across dementia subtypes. While research has established the impact of soundscape on behavioural and psychological symptoms of dementia (BPSD) (Janus et al., 2021; De Pessemier et al., 2022; Talebzadeh, Decoutere et al., 2023; Talebzadeh et al., 2024) limited work has examined how distinct ASA deficits in different forms of dementia should inform environmental design. This study synthesizes clinical trials and observational studies findings to develop a theoretical framework linking dementia‐specific ASA impairments to targeted soundscape interventions. Methods We conducted a systematic analysis of ASA deficits across dementia subtypes through multiple complementary approaches. First, we performed ethnographic observations in dementia care settings to understand the relationship between acoustic environments and behavioural responses. These observations informed the development of a randomized controlled trial (n = 28) examining soundscape augmentation effects on BPSD. Finally, we synthesized these findings through functional block diagrams mapping the relationship between auditory deficits and dementia variants, integrating both the theoretical ASA framework and empirical intervention outcomes. Results Analysis revealed distinct patterns of ASA impairment across dementia subtypes: Alzheimer's disease showed primary deficits in sound source segregation and spatial processing; posterior cortical atrophy demonstrated severe ASA segregation/grouping impairments exceeding typical Alzheimer's; frontotemporal dementia exhibited specific deficits in rhythm, pitch, and emotional processing; while Lewy body dementia showed disrupted reality monitoring and auditory hallucinations. The RCT demonstrated that soundscape augmentation could improve behavioural symptoms, with significant reductions in resistance to care scores (‐0.81, 95% CI ‐1.59 to ‐0.03, p = 0.042), though these improvements were not specifically linked to dementia subtypes. These findings, combined with the identified ASA deficit patterns, suggest the potential for more targeted interventions. Conclusions This work establishes a novel framework linking dementia‐specific ASA deficits to environmental design principles. Results indicate that soundscape interventions must be tailored to the particular pattern of auditory processing impairment in different dementia subtypes. These findings have significant implications for designing acoustic environments in dementia care settings and suggest that environmental modifications should consider both bottom‐up (primitive) and top‐down (schema‐based) auditory processing deficits specific to each form of dementia. 
653 |a Intervention 
653 |a Alzheimer's disease 
653 |a Brain 
653 |a Dementia 
653 |a Resistance 
653 |a Clinical trials 
653 |a Mapping 
653 |a Pitch 
653 |a Frontotemporal 
653 |a Auditory hallucinations 
653 |a Acoustics 
653 |a Hallucinations 
653 |a Psychological problems 
653 |a Frame analysis 
653 |a Subtypes 
653 |a Emotion recognition 
653 |a Segregation 
653 |a Auditory processing disorder 
653 |a Observational studies 
653 |a Clinical research 
653 |a Auditory processing 
653 |a Rhythm 
653 |a Diagrams 
653 |a Augmentation 
653 |a Ethnography 
653 |a Symptoms 
653 |a Variants 
653 |a Behavioral responses 
653 |a Soundscapes 
700 1 |a Botteldooren, Dick  |u University Ghent, Ghent, Flanders, Belgium, 
773 0 |t Alzheimer's & Dementia  |g vol. 21 (Dec 1, 2025) 
786 0 |d ProQuest  |t Consumer Health Database 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/3286565018/abstract/embedded/L8HZQI7Z43R0LA5T?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/3286565018/fulltextPDF/embedded/L8HZQI7Z43R0LA5T?source=fedsrch