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Statistical Analysis of Inter-Trial Variability in Stimulus-Related Task Responses in Autism Spectrum Disorders
Statistical Analysis of Inter-Trial Variability in Stimulus-Related Task Responses in Autism Spectrum Disorders
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103630
- ISBN
- 9798315790990
- DDC
- 574
- 저자명
- Dong, Mingfei.
- 서명/저자
- Statistical Analysis of Inter-Trial Variability in Stimulus-Related Task Responses in Autism Spectrum Disorders
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 182 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Senturk, Damla.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약Autism spectrum disorder (ASD) is a prevalent neurodevelopmental condition characterized by early-emerging impairments in social behavior and communication, as well as behavioral and sensory differences. Recent evidence indicates that, rather than a general failure to synchronize neural activity, individuals with ASD exhibit greater intra-individual trial-to-trial variability in responses, including those measured by eye tracking (ET) and electroencephalography (EEG), to stimulus-related tasks. This dissertation develops statistical methods to analyze and characterize such inter-trial variability across different types of trial-level data from experiments conducted by the Autism Biomarkers Consortium for Clinical Trials (ABC-CT).In Chapter 1, we propose a novel functional outcome, referred to as the viewing profile, which captures common gaze patterns over trial time. Functional data analysis techniques, such as functional principal component analysis (FPCA) can be applied to the viewing profiles to investigate overall trends and variations of the target gaze behavior across subjects and diagnostic groups. Application of this functional data analysis approach on ET data from a visual exploration (VE) paradigm demonstrates significant group differences between children with autism and their typically developing peers in the consistency of looking at faces early in the trial.In Chapter 2, we introduce nonlinear (shape-invariant) mixed effects (NLME) models to study intra-individual inter-trial EEG response variability. The proposed multilevel NLME models quantify variability in interpretable and widely recognized signal features (e.g., latency and amplitude) while also regularizing estimation based on noisy trial-level data. A computationally efficient minorization-maximization (MM) algorithm enables the adaptation of NLME models to large-scale datasets that are challenging for existing algorithms and computational tools. Application of the NLME framework to EEG data from the visual evoked potential (VEP) paradigm reveals that children with autism exhibit greater intra-individual inter-trial variability in P1 latency compared to their neurotypical peers.In Chapter 3, we propose a multilevel multivariate FPCA for high-dimensional functional outcomes, motivated by the joint modeling of evoked and induced event-related spectral perturbations (ERSPs) as functions of time and frequency. Incorporating novel computational methods, the proposed approach efficiently scales to higher-dimensional functional outcomes and an increasing number of variates in the multivariate functional outcome vector. Application to ERSP data collected during the VEP paradigm provides new insights into autism-specific neural activity patterns, as well as subject- and trial-level variability.
- 일반주제명
- Biostatistics
- 일반주제명
- Neurosciences
- 일반주제명
- Biomedical engineering
- 일반주제명
- Medical imaging
- 키워드
- Eye-tracking
- 기타저자
- University of California, Los Angeles Biostatistics 0132
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■007cr#unu||||||||
■020 ▼a9798315790990
■035 ▼a(MiAaPQ)AAI32046851
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aDong, Mingfei.
■24510▼aStatistical Analysis of Inter-Trial Variability in Stimulus-Related Task Responses in Autism Spectrum Disorders
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a182 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Senturk, Damla.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aAutism spectrum disorder (ASD) is a prevalent neurodevelopmental condition characterized by early-emerging impairments in social behavior and communication, as well as behavioral and sensory differences. Recent evidence indicates that, rather than a general failure to synchronize neural activity, individuals with ASD exhibit greater intra-individual trial-to-trial variability in responses, including those measured by eye tracking (ET) and electroencephalography (EEG), to stimulus-related tasks. This dissertation develops statistical methods to analyze and characterize such inter-trial variability across different types of trial-level data from experiments conducted by the Autism Biomarkers Consortium for Clinical Trials (ABC-CT).In Chapter 1, we propose a novel functional outcome, referred to as the viewing profile, which captures common gaze patterns over trial time. Functional data analysis techniques, such as functional principal component analysis (FPCA) can be applied to the viewing profiles to investigate overall trends and variations of the target gaze behavior across subjects and diagnostic groups. Application of this functional data analysis approach on ET data from a visual exploration (VE) paradigm demonstrates significant group differences between children with autism and their typically developing peers in the consistency of looking at faces early in the trial.In Chapter 2, we introduce nonlinear (shape-invariant) mixed effects (NLME) models to study intra-individual inter-trial EEG response variability. The proposed multilevel NLME models quantify variability in interpretable and widely recognized signal features (e.g., latency and amplitude) while also regularizing estimation based on noisy trial-level data. A computationally efficient minorization-maximization (MM) algorithm enables the adaptation of NLME models to large-scale datasets that are challenging for existing algorithms and computational tools. Application of the NLME framework to EEG data from the visual evoked potential (VEP) paradigm reveals that children with autism exhibit greater intra-individual inter-trial variability in P1 latency compared to their neurotypical peers.In Chapter 3, we propose a multilevel multivariate FPCA for high-dimensional functional outcomes, motivated by the joint modeling of evoked and induced event-related spectral perturbations (ERSPs) as functions of time and frequency. Incorporating novel computational methods, the proposed approach efficiently scales to higher-dimensional functional outcomes and an increasing number of variates in the multivariate functional outcome vector. Application to ERSP data collected during the VEP paradigm provides new insights into autism-specific neural activity patterns, as well as subject- and trial-level variability.
■590 ▼aSchool code: 0031.
■650 4▼aBiostatistics
■650 4▼aNeurosciences
■650 4▼aBiomedical engineering
■650 4▼aMedical imaging
■653 ▼aAutism spectrum disorder
■653 ▼aElectroencephalography
■653 ▼aEye-tracking
■653 ▼aFunctional principal component analysis
■653 ▼aVisual exploration
■690 ▼a0308
■690 ▼a0574
■690 ▼a0541
■690 ▼a0317
■71020▼aUniversity of California, Los Angeles▼bBiostatistics 0132.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358011▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


