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Ascribing Meaning to Sound in the Avian Auditory System
Ascribing Meaning to Sound in the Avian Auditory System
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104846
- ISBN
- 9798297601161
- DDC
- 616
- 저자명
- Thomas, Logan.
- 서명/저자
- Ascribing Meaning to Sound in the Avian Auditory System
- 발행사항
- [Sl] : University of California, Berkeley, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 94 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-04, Section: B.
- 주기사항
- Advisor: Theunissen, Frederic E.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2025.
- 초록/해제
- 요약Understanding how neural systems encode and categorize complex acoustic signals remains a fundamental challenge in neuroscience. The neural mechanisms underlying vocal repertoire recognition, functional organization across auditory processing stages, and behavioral context effects on neural coding remain unclear. This dissertation investigates neural coding in the avian auditory system across three dimensions: ensemble coding for call-type categorization, functional specialization between auditory regions, and task-dependent modulation during behavioral engagement. We recorded from primary (Field L, CLM) and secondary (NCM, CMM) auditory areas in zebra finches using chronic electrode arrays during passive playback, encoding model analysis, and operant conditioning tasks. Novel methodologies characterized neural tuning across narrow-spiking (NS) and broad-spiking (BS) neuronal populations. Primary auditory Field L employed dense coding optimized for acoustic segmentation, while secondary NCM utilized sparse coding specialized for categorical identification. During operant conditioning, Field L maintained stable acoustic representations regardless of behavioral outcome, while NCM showed task-dependent enhancement and represented perceptual categories, with selective decorrelation of inhibitory networks during active categorization. The avian auditory system employs a hierarchical architecture where primary regions implement dense coding for segmentation and secondary regions use sparse coding for identification. Transformation from acoustic to semantic representations involves ensemble strategies, with behavioral context selectively modulating higher-order categorical processing through reward-sensitive mechanisms and neural decorrelation. These findings reveal complementary coding strategies across auditory processing stages and demonstrate context-dependent categorical processing. The results advance understanding of sensory hierarchies and have implications for speech processing, categorical perception, and neural mechanisms of learned acoustic categories.
- 일반주제명
- Neurosciences
- 일반주제명
- Acoustics
- 일반주제명
- Animal sciences
- 키워드
- Auditory
- 키워드
- Bird
- 키워드
- Encoding model
- 키워드
- Semantics
- 키워드
- Systems
- 기타저자
- University of California, Berkeley Biophysics
- 기본자료저록
- Dissertations Abstracts International. 87-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■007cr#unu||||||||
■020 ▼a9798297601161
■035 ▼a(MiAaPQ)AAI32173821
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aThomas, Logan.
■24510▼aAscribing Meaning to Sound in the Avian Auditory System
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a94 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-04, Section: B.
■500 ▼aAdvisor: Theunissen, Frederic E.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2025.
■520 ▼aUnderstanding how neural systems encode and categorize complex acoustic signals remains a fundamental challenge in neuroscience. The neural mechanisms underlying vocal repertoire recognition, functional organization across auditory processing stages, and behavioral context effects on neural coding remain unclear. This dissertation investigates neural coding in the avian auditory system across three dimensions: ensemble coding for call-type categorization, functional specialization between auditory regions, and task-dependent modulation during behavioral engagement. We recorded from primary (Field L, CLM) and secondary (NCM, CMM) auditory areas in zebra finches using chronic electrode arrays during passive playback, encoding model analysis, and operant conditioning tasks. Novel methodologies characterized neural tuning across narrow-spiking (NS) and broad-spiking (BS) neuronal populations. Primary auditory Field L employed dense coding optimized for acoustic segmentation, while secondary NCM utilized sparse coding specialized for categorical identification. During operant conditioning, Field L maintained stable acoustic representations regardless of behavioral outcome, while NCM showed task-dependent enhancement and represented perceptual categories, with selective decorrelation of inhibitory networks during active categorization. The avian auditory system employs a hierarchical architecture where primary regions implement dense coding for segmentation and secondary regions use sparse coding for identification. Transformation from acoustic to semantic representations involves ensemble strategies, with behavioral context selectively modulating higher-order categorical processing through reward-sensitive mechanisms and neural decorrelation. These findings reveal complementary coding strategies across auditory processing stages and demonstrate context-dependent categorical processing. The results advance understanding of sensory hierarchies and have implications for speech processing, categorical perception, and neural mechanisms of learned acoustic categories.
■590 ▼aSchool code: 0028.
■650 4▼aNeurosciences
■650 4▼aAcoustics
■650 4▼aAnimal sciences
■653 ▼aAuditory
■653 ▼aBird
■653 ▼aEncoding model
■653 ▼aSemantics
■653 ▼aSystems
■690 ▼a0317
■690 ▼a0475
■690 ▼a0986
■71020▼aUniversity of California, Berkeley▼bBiophysics.
■7730 ▼tDissertations Abstracts International▼g87-04B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359185▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
