scholarly journals Lost in sound: auditory perceptual abilities in neurodegenerative diseases

Brain ◽  
2020 ◽  
Vol 143 (9) ◽  
pp. 2626-2627
Author(s):  
Teppo Särkämö ◽  
Aleksi J Sihvonen
Keyword(s):  
Neurodegenerative Diseases ◽  
Auditory Scene Analysis ◽  
Scene Analysis ◽  
Cortical Atrophy ◽  
Posterior Cortical Atrophy ◽  
Auditory Scene ◽  
Perceptual Abilities

This scientific commentary refers to ‘Impairments of auditory scene analysis in posterior cortical atrophy’, by Hardy et al. (doi:10.1093/brain/awaa221).

scholarly journals Impairments of auditory scene analysis in posterior cortical atrophy

Brain ◽  
2020 ◽  
Vol 143 (9) ◽  
pp. 2689-2695 ◽  
Author(s):  
Chris J D Hardy ◽  
Keir X X Yong ◽  
Johanna C Goll ◽  
Sebastian J Crutch ◽  
Jason D Warren
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Auditory Scene Analysis ◽  
Cross Sectional Study ◽  
Scene Analysis ◽  
Cortical Atrophy ◽  
Posterior Cortical Atrophy ◽  
Cross Sectional ◽  
Auditory Scene ◽  
Sound Source Segregation

Abstract Although posterior cortical atrophy is often regarded as the canonical ‘visual dementia’, auditory symptoms may also be salient in this disorder. Patients often report particular difficulty hearing in busy environments; however, the core cognitive process—parsing of the auditory environment (‘auditory scene analysis’)—has been poorly characterized. In this cross-sectional study, we used customized perceptual tasks to assess two generic cognitive operations underpinning auditory scene analysis—sound source segregation and sound event grouping—in a cohort of 21 patients with posterior cortical atrophy, referenced to 15 healthy age-matched individuals and 21 patients with typical Alzheimer’s disease. After adjusting for peripheral hearing function and performance on control tasks assessing perceptual and executive response demands, patients with posterior cortical atrophy performed significantly worse on both auditory scene analysis tasks relative to healthy controls and patients with typical Alzheimer’s disease (all P < 0.05). Our findings provide further evidence of central auditory dysfunction in posterior cortical atrophy, with implications for our pathophysiological understanding of Alzheimer syndromes as well as clinical diagnosis and management.

Attention effects on auditory scene analysis: insights from event-related brain potentials

2014 ◽  
Vol 78 (3) ◽  
pp. 361-378 ◽  
Author(s):  
Mona Isabel Spielmann ◽  
Erich Schröger ◽  
Sonja A. Kotz ◽  
Alexandra Bendixen
Keyword(s):  
Auditory Scene Analysis ◽  
Scene Analysis ◽  
Brain Potentials ◽  
Auditory Scene

Perceptual Processes in Orchestration

2018 ◽  
Author(s):  
Meghan Goodchild ◽  
Stephen McAdams
Keyword(s):  
Auditory Scene Analysis ◽  
Scene Analysis ◽  
Auditory Grouping ◽  
Musical Scores ◽  
Auditory Scene ◽  
Music Research

The study of timbre and orchestration in music research is underdeveloped, with few theories to explain instrumental combinations and orchestral shaping. This chapter will outline connections between the orchestration practices of the nineteenth and early twentieth centuries and perceptual principles based on recent research in auditory scene analysis and timbre perception. Analyses of orchestration treatises and musical scores reveal an implicit understanding of auditory grouping principles by which many orchestral effects and techniques function. We will explore how concurrent grouping cues result in blended combinations of instruments, how sequential grouping into segregated melodies or stratified (foreground and background) layers is influenced by timbral similarities and dissimilarities, and how segmental grouping cues create formal boundaries and expressive gestural shaping through changes in instrumental textures. This exploration will be framed within an examination of historical and contemporary discussion of orchestral effects and techniques.

scholarly journals Intelligibility Redux

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
Anna Zayaruznaya
Keyword(s):  
Cognitive Psychology ◽  
School Culture ◽  
20Th Century ◽  
Auditory Scene Analysis ◽  
Scene Analysis ◽  
Multiple Texts ◽  
Human Ability ◽  
Auditory Scene ◽  
Choir School

The medieval composers of polytextual motets have been charged with rendering multiple texts inaudible by superimposing them. While the limited contemporary evidence provided by Jacobus’s comments in theSpeculum musicaeseems at first sight to suggest that medieval listeners would have had trouble understanding texts declaimed simultaneously, closer scrutiny reveals the opposite: that intelligibility was desirable, and linked to modes of performance. This article explores the ways in which 20th-century performance aesthetics and recording technologies have shaped current ideas about the polytextual motet. Recent studies in cognitive psychology suggest that human ability to perform auditory scene analysis—to focus on a given sound in a complicated auditory environment—is enhanced by directional listening and relatively dry acoustics. But the modern listener often encounters motets on recordings with heavy mixing and reverb. Furthermore, combinations of contrasting vocal timbres, which can help differentiate simultaneously sung texts, are precluded by a blended, uniform sound born jointly of English choir-school culture and modernist preferences propagated under the banner of authenticity. Scholarly accounts of motets that focus on sound over sense are often influenced, directly or indirectly, by such mediated listening.

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