서브메뉴
검색
Examining Neural and Cognitive Aging Following Traumatic Brain Injury Among Middle and Older Adults
Examining Neural and Cognitive Aging Following Traumatic Brain Injury Among Middle and Older Adults
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105634
- ISBN
- 9798297962453
- DDC
- 616
- 서명/저자
- Examining Neural and Cognitive Aging Following Traumatic Brain Injury Among Middle and Older Adults
- 발행사항
- [Sl] : The Ohio State University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 201 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Hayes, Jasmeet P.
- 학위논문주기
- Thesis (Ph.D.)--The Ohio State University, 2025.
- 초록/해제
- 요약Aging is characterized by pervasive decline of white matter and cognition. However, this decline is highly variable, and many studies identify traumatic brain injury (TBI) as a risk factor for accelerated neural and cognitive aging. It is often thought that TBI may accelerate cognitive decline by exacerbating age-related decline of white matter integrity. However, previous research has largely examined white matter integrity using analyses that assume spatial homogeneity of white matter disruptions. The purpose of study 1 was to examine how TBI may impact white matter throughout the aging process by examining the independent effects of TBI and interactions between TBI and age. The purpose of study 2 was to examine how TBI may impact cognitive aging by examining the independent effects of TBI and interactions between TBI and white matter integrity. Participants in study 1 included 118 middle and older adults ranging in age from 40-86 years old with demographic, TBI, and neuroimaging data collected as part of the Fitness, Aging, Stress, and TBI Repository (FASTER); two of these individuals were missing cognitive data and were excluded from study 2. Lifetime TBI history was assessed with the Boston Assessment of Traumatic Brain Injury - Lifetime (BAT-L). There were 44 participants with a history of TBI, 36 of whom had a mild TBI while 8 had a moderate/severe TBI. Diffusion weighted imaging scans were collected and analyzed with a voxel-wise, cluster-based approach, which is sensitive to heterogenous white matter abnormalities, to quantify number of fractional anisotropy (FA) and mean diffusivity (MD) potholes. Episodic memory and executive functioning composite scores were computed from a battery of neuropsychological tests. In study 1, hierarchical linear regressions were implemented to examine the effects of TBI and age on white matter integrity adjusting for sex and education. In study 2, hierarchical linear regressions were implemented to examine the effects of TBI and white matter integrity on episodic memory and executive functioning, adjusting for age, sex, and education. Results showed there were no independent effects of TBI or interactions between TBI and age on white matter potholes throughout the brain, however a history of TBI was associated with more FA potholes in the fornix. There were also no independent effects of TBI or interactions between TBI and white matter potholes on episodic memory or executive functioning. There was, however, a significant effect of age on white matter potholes throughout the brain, measured via both FA and MD, episodic memory, and executive functioning, indicating decreased white matter integrity and cognition at older ages. Lastly, findings showed that males had more FA potholes than females and females had higher episodic memory performance than males, but there were no sex differences in terms of MD potholes or executive functioning. Overall, these results show decreased white matter and cognition throughout the aging process. Further, findings show that TBI may have regionally specific effects, particularly in the fornix, but there were no chronic whole-brain or cognitive consequences. Future research should consider the role of other risk and protective factors to understand who may be most susceptible to negative outcomes following TBI and throughout the aging process.
- 일반주제명
- Neurosciences
- 일반주제명
- Aging
- 일반주제명
- Health sciences
- 일반주제명
- Clinical psychology
- 일반주제명
- Cognitive psychology
- 키워드
- Cognition
- 기타저자
- The Ohio State University Psychology
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017360895
■00520260202105634
■006m o d
■007cr#unu||||||||
■020 ▼a9798297962453
■035 ▼a(MiAaPQ)AAI32384277
■035 ▼a(MiAaPQ)OhioLINKosu175205103504364
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aMoody, Jena Nicole.
■24510▼aExamining Neural and Cognitive Aging Following Traumatic Brain Injury Among Middle and Older Adults
■260 ▼a[Sl]▼bThe Ohio State University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a201 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Hayes, Jasmeet P.
■5021 ▼aThesis (Ph.D.)--The Ohio State University, 2025.
■520 ▼aAging is characterized by pervasive decline of white matter and cognition. However, this decline is highly variable, and many studies identify traumatic brain injury (TBI) as a risk factor for accelerated neural and cognitive aging. It is often thought that TBI may accelerate cognitive decline by exacerbating age-related decline of white matter integrity. However, previous research has largely examined white matter integrity using analyses that assume spatial homogeneity of white matter disruptions. The purpose of study 1 was to examine how TBI may impact white matter throughout the aging process by examining the independent effects of TBI and interactions between TBI and age. The purpose of study 2 was to examine how TBI may impact cognitive aging by examining the independent effects of TBI and interactions between TBI and white matter integrity. Participants in study 1 included 118 middle and older adults ranging in age from 40-86 years old with demographic, TBI, and neuroimaging data collected as part of the Fitness, Aging, Stress, and TBI Repository (FASTER); two of these individuals were missing cognitive data and were excluded from study 2. Lifetime TBI history was assessed with the Boston Assessment of Traumatic Brain Injury - Lifetime (BAT-L). There were 44 participants with a history of TBI, 36 of whom had a mild TBI while 8 had a moderate/severe TBI. Diffusion weighted imaging scans were collected and analyzed with a voxel-wise, cluster-based approach, which is sensitive to heterogenous white matter abnormalities, to quantify number of fractional anisotropy (FA) and mean diffusivity (MD) potholes. Episodic memory and executive functioning composite scores were computed from a battery of neuropsychological tests. In study 1, hierarchical linear regressions were implemented to examine the effects of TBI and age on white matter integrity adjusting for sex and education. In study 2, hierarchical linear regressions were implemented to examine the effects of TBI and white matter integrity on episodic memory and executive functioning, adjusting for age, sex, and education. Results showed there were no independent effects of TBI or interactions between TBI and age on white matter potholes throughout the brain, however a history of TBI was associated with more FA potholes in the fornix. There were also no independent effects of TBI or interactions between TBI and white matter potholes on episodic memory or executive functioning. There was, however, a significant effect of age on white matter potholes throughout the brain, measured via both FA and MD, episodic memory, and executive functioning, indicating decreased white matter integrity and cognition at older ages. Lastly, findings showed that males had more FA potholes than females and females had higher episodic memory performance than males, but there were no sex differences in terms of MD potholes or executive functioning. Overall, these results show decreased white matter and cognition throughout the aging process. Further, findings show that TBI may have regionally specific effects, particularly in the fornix, but there were no chronic whole-brain or cognitive consequences. Future research should consider the role of other risk and protective factors to understand who may be most susceptible to negative outcomes following TBI and throughout the aging process.
■590 ▼aSchool code: 0168.
■650 4▼aNeurosciences
■650 4▼aAging
■650 4▼aHealth sciences
■650 4▼aClinical psychology
■650 4▼aCognitive psychology
■653 ▼aTraumatic brain injury
■653 ▼aWhite matter microstructure
■653 ▼aCognition
■690 ▼a0622
■690 ▼a0317
■690 ▼a0566
■690 ▼a0493
■690 ▼a0633
■71020▼aThe Ohio State University▼bPsychology.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0168
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360895▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


