Selective Listening in Multi-Source Environments: Understanding the Role of Rhythm in Young and Older Listeners- [electronic resource]
Selective Listening in Multi-Source Environments: Understanding the Role of Rhythm in Young and Older Listeners- [electronic resource]
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101920
- ISBN
- 9798380609579
- DDC
- 618.97
- 서명/저자
- Selective Listening in Multi-Source Environments: Understanding the Role of Rhythm in Young and Older Listeners - [electronic resource]
- 발행사항
- [S.l.]: : Indiana University., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(144 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-04, Section: A.
- 주기사항
- Advisor: Bent, Tessa;Shen, Yi.
- 학위논문주기
- Thesis (Ph.D.)--Indiana University, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 초록/해제
- 요약Understanding speech in complex, multi-source listening environments is a challenging component of everyday communication. The temporal patterning and rhythmic structure of both target (to-be-attended) signals and competing background (unattended) signals are crucial to navigating these acoustic environments. Previous research has shown that altering the natural rhythmic structure of target speech degrades speech recognition (the target rhythm effect), while the same alterations to competing backgrounds facilitate speech understanding in certain conditions (the background rhythm effect). This role of rhythm is in general agreement with attentional entrainment where internal attentional rhythms are entrained by the rhythmic structure of external stimuli. However, the process of attentional entrainment in the presence of multiple competing rhythmic signals is not fully understood.The current dissertation develops a vowel sequence identification paradigm designed to probe attentional entrainment in multi-source environments, while avoiding potential confounds associated with using naturally produced speech stimuli. In this paradigm, listeners identify synthetic vowels within a target sequence presented alongside a competing background sequence. The target and background sequences allow for independent rhythm alteration without distorting the acoustic qualities of the stimuli, while preventing temporal overlap of stimuli. With this paradigm the dissertation pursues three goals: (1) replicating the target and background rhythm effects using highly-controlled stimuli with minimal linguistic information, (2) investigating the conditions where a background rhythm effect is elicited and (3) identifying potential age-related differences in the sensitivity to rhythmic information on multi-source listening. In two experiments both young adult and older listeners were recruited to investigate the role of rhythm separately in the target and competing background sequences. The results of these experiments were able to replicate the target and background rhythm effects found in previous studies, expanding the role of rhythm in selective listening beyond speech. Further, the background rhythm effect depended on the background sequence consisting of synthetic vowels similar to the target vowels. Finally, the identification performance of older listeners exhibited less sensitivity to rhythm alteration in both the target and background. These results demonstrate the importance of considering rhythm and attentional entrainment in understanding the difficulties in navigating multi-source environments, especially among older listeners.
- 일반주제명
- Acoustics.
- 일반주제명
- Aging.
- 일반주제명
- Speech therapy.
- 일반주제명
- Communication.
- 키워드
- Attention
- 키워드
- Entrainment
- 키워드
- Hearing
- 키워드
- Rhythm
- 기타저자
- Indiana University Speech Language & Hearing Sciences
- 기본자료저록
- Dissertations Abstracts International. 85-04A.
- 기본자료저록
- Dissertation Abstract International
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