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What Spontaneous Movements Tell Us About Decision-Making and Behavioral States
What Spontaneous Movements Tell Us About Decision-Making and Behavioral States
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105642
- ISBN
- 9798270213046
- DDC
- 616
- 저자명
- Yin, Chaoqun.
- 서명/저자
- What Spontaneous Movements Tell Us About Decision-Making and Behavioral States
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 119 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisor: Churchland, Anne K.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약Switching between different behavioral states is a common part of daily life. Sometimes we are better engaged in facing challenges at work, while at other times we just want to call it a day and head home early. Despite the ubiquity of behavioral state fluctuation, its neural mechanism is still largely unknown. I applied a behavioral model to the choice patterns of mice trained to perform a decision-making task, in which mice made left-or-right choices based on auditory stimuli. The model revealed one engaged state, characterized by stimulus-based choices, and two disengaged states, characterized by strong left or right choice biases. Analyzing neural activity of the dorsal cortex collected with wide-field imaging further showed that, surprisingly, the averaged activity across the dorsal cortex was unchanged across engagement states, even in the brain regions traditionally believed to be involved in decision-making, such as the parietal cortex. However, the trial-to-trial variance in neural activity was increased during disengagement. Further analyses showed that this extra neural variance was not simply noise associated with bad performance. In fact, seemingly paradoxically, a higher percentage of neural activity was meaningful during disengagement. A closer look further revealed that the neural activity associated with the task variables (stimulus, upcoming choice, etc.) remained consistent across engaged and disengaged states, but movement-related neural activity (whisking, paw movement, etc.) increased during disengagement. This increase resulted from two sources: 1) for some types of movements, each single movement accounted for modestly more neural activity during disengagement. 2) The pattern of spontaneous movement during disengagement became less stereotyped. Interestingly, quantified by motion energy, mice did not move more during disengagement even though their movement became less stereotyped and less predictive Overall, my thesis work uncovered that movements and cognition are intertwined, pointing to a close link between movements and cognition.
- 일반주제명
- Neurosciences
- 일반주제명
- Physiology
- 일반주제명
- Psychology
- 키워드
- Neural mechanism
- 키워드
- Decision-making
- 키워드
- Parietal cortex
- 키워드
- Auditory stimuli
- 기타저자
- University of California, Los Angeles Neuroscience 004F
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798270213046
■035 ▼a(MiAaPQ)AAI32398823
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aYin, Chaoqun.
■24510▼aWhat Spontaneous Movements Tell Us About Decision-Making and Behavioral States
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a119 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisor: Churchland, Anne K.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aSwitching between different behavioral states is a common part of daily life. Sometimes we are better engaged in facing challenges at work, while at other times we just want to call it a day and head home early. Despite the ubiquity of behavioral state fluctuation, its neural mechanism is still largely unknown. I applied a behavioral model to the choice patterns of mice trained to perform a decision-making task, in which mice made left-or-right choices based on auditory stimuli. The model revealed one engaged state, characterized by stimulus-based choices, and two disengaged states, characterized by strong left or right choice biases. Analyzing neural activity of the dorsal cortex collected with wide-field imaging further showed that, surprisingly, the averaged activity across the dorsal cortex was unchanged across engagement states, even in the brain regions traditionally believed to be involved in decision-making, such as the parietal cortex. However, the trial-to-trial variance in neural activity was increased during disengagement. Further analyses showed that this extra neural variance was not simply noise associated with bad performance. In fact, seemingly paradoxically, a higher percentage of neural activity was meaningful during disengagement. A closer look further revealed that the neural activity associated with the task variables (stimulus, upcoming choice, etc.) remained consistent across engaged and disengaged states, but movement-related neural activity (whisking, paw movement, etc.) increased during disengagement. This increase resulted from two sources: 1) for some types of movements, each single movement accounted for modestly more neural activity during disengagement. 2) The pattern of spontaneous movement during disengagement became less stereotyped. Interestingly, quantified by motion energy, mice did not move more during disengagement even though their movement became less stereotyped and less predictive Overall, my thesis work uncovered that movements and cognition are intertwined, pointing to a close link between movements and cognition.
■590 ▼aSchool code: 0031.
■650 4▼aNeurosciences
■650 4▼aPhysiology
■650 4▼aPsychology
■653 ▼aNeural mechanism
■653 ▼aDecision-making
■653 ▼aParietal cortex
■653 ▼aAuditory stimuli
■690 ▼a0317
■690 ▼a0621
■690 ▼a0719
■71020▼aUniversity of California, Los Angeles▼bNeuroscience 004F.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360945▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


