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Identifying Patterns of Decision Making and Motor Behavior Relevant to Schizophrenia in Mouse Models
Identifying Patterns of Decision Making and Motor Behavior Relevant to Schizophrenia in Mouse Models
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105117
- ISBN
- 9798293866182
- DDC
- 153
- 저자명
- Mueller, Dana M.
- 서명/저자
- Identifying Patterns of Decision Making and Motor Behavior Relevant to Schizophrenia in Mouse Models
- 발행사항
- [Sl] : University of Minnesota, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 211 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Grissom, Nicola;Vilares, Iris.
- 학위논문주기
- Thesis (Ph.D.)--University of Minnesota, 2025.
- 초록/해제
- 요약Schizophrenia is often characterized by thoughts or experiences that seem out of touch with reality, disorganized speech or behavior, and difficulty with cognition, especially executive function. Quality of life is most impacted by cognitive deficits, which are a high priority for translational research. Executive dysfunctions in schizophrenia are particularly noted in decision making, which can be assessed across species using a restless bandit task, in which the reward probability of each choice changes randomly and independently across trials to measure explore/exploit balance. With this task we can investigate how different aspects of decision making relevant to schizophrenia are impacted in mouse models. In this dissertation, I present three studies investigating in mice how 1) sex differences influence motor variability in decision making, 2) two models - one genetic (16p11.2 duplication) and one pharmacological (NMDA-receptor antagonist) - for risk factors for psychosis impact decision making, and 3) population dynamics in the frontal cortex underlie decision making strategies. Study 1 used touch responses to study action variability in decision making and found independent effects of explore/exploit state, prior reward, and sex. Study 2 found that decision making was altered at different stages of the task by different models for risk factors for schizophrenia. First, 16p11.2 duplication revealed a male-biased vulnerability in early operant training suggesting an impact in strategies for learning early schemas or navigating novel environments. Second, MK-801 injection revealed that NMDA-receptors are influential in the ability to flexibly switch between choices, and that disrupting this function significantly impairs decision making in all animals. Finally, Study 3 used an in-vivo electrophysiology technique to study neuronal population activity during freely moving behavior, finding stronger encoding of exploit state strategy compared to explore state across mouse frontal cortex. Together these experiments show that the explore/exploit balance is represented both in motor behavior and neural activity, but models for risk factors for schizophrenia impact multiple facets of decision making beyond explore/exploit balance.
- 일반주제명
- Cognitive psychology
- 일반주제명
- Behavioral psychology
- 일반주제명
- Neurosciences
- 일반주제명
- Medicine
- 키워드
- Bandit
- 키워드
- Mk-801
- 키워드
- Touchscreen
- 기타저자
- University of Minnesota Psychology
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798293866182
■035 ▼a(MiAaPQ)AAI32237772
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a153
■1001 ▼aMueller, Dana M.
■24510▼aIdentifying Patterns of Decision Making and Motor Behavior Relevant to Schizophrenia in Mouse Models
■260 ▼a[Sl]▼bUniversity of Minnesota▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a211 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Grissom, Nicola;Vilares, Iris.
■5021 ▼aThesis (Ph.D.)--University of Minnesota, 2025.
■520 ▼aSchizophrenia is often characterized by thoughts or experiences that seem out of touch with reality, disorganized speech or behavior, and difficulty with cognition, especially executive function. Quality of life is most impacted by cognitive deficits, which are a high priority for translational research. Executive dysfunctions in schizophrenia are particularly noted in decision making, which can be assessed across species using a restless bandit task, in which the reward probability of each choice changes randomly and independently across trials to measure explore/exploit balance. With this task we can investigate how different aspects of decision making relevant to schizophrenia are impacted in mouse models. In this dissertation, I present three studies investigating in mice how 1) sex differences influence motor variability in decision making, 2) two models - one genetic (16p11.2 duplication) and one pharmacological (NMDA-receptor antagonist) - for risk factors for psychosis impact decision making, and 3) population dynamics in the frontal cortex underlie decision making strategies. Study 1 used touch responses to study action variability in decision making and found independent effects of explore/exploit state, prior reward, and sex. Study 2 found that decision making was altered at different stages of the task by different models for risk factors for schizophrenia. First, 16p11.2 duplication revealed a male-biased vulnerability in early operant training suggesting an impact in strategies for learning early schemas or navigating novel environments. Second, MK-801 injection revealed that NMDA-receptors are influential in the ability to flexibly switch between choices, and that disrupting this function significantly impairs decision making in all animals. Finally, Study 3 used an in-vivo electrophysiology technique to study neuronal population activity during freely moving behavior, finding stronger encoding of exploit state strategy compared to explore state across mouse frontal cortex. Together these experiments show that the explore/exploit balance is represented both in motor behavior and neural activity, but models for risk factors for schizophrenia impact multiple facets of decision making beyond explore/exploit balance.
■590 ▼aSchool code: 0130.
■650 4▼aCognitive psychology
■650 4▼aBehavioral psychology
■650 4▼aNeurosciences
■650 4▼aMedicine
■653 ▼a16P11.2 duplication
■653 ▼aBandit
■653 ▼aMk-801
■653 ▼aPrefrontal cortex
■653 ▼aReinforcement learning
■653 ▼aTouchscreen
■690 ▼a0633
■690 ▼a0384
■690 ▼a0317
■690 ▼a0564
■71020▼aUniversity of Minnesota▼bPsychology.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0130
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359424▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


