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The Effect of Ketamine on Entorhinal and Hippocampal Spatial Maps
The Effect of Ketamine on Entorhinal and Hippocampal Spatial Maps
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152119
- ISBN
- 9798384339335
- DDC
- 300
- 서명/저자
- The Effect of Ketamine on Entorhinal and Hippocampal Spatial Maps
- 발행사항
- [Sl] : Stanford University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 90 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- 주기사항
- Advisor: Giocomo, Lisa.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2024.
- 초록/해제
- 요약Ketamine is a commonly used rapid-acting anesthetic and acute antidepressant that carries undesirable spatial cognition side effects including out-of-body experiences and spatial memory impairments. Recently, ketamine has been receiving significant clinical and scientific attention due to its ability to acutely treat psychiatric disorders. Yet, despite the immense excitement that surrounds the clinical use of ketamine, its mechanism of action and neurological effects remain incompletely understood. Notably, previous studies have yet to reveal the neural substrates that underlie ketamine's effect on spatial cognition.Here, I describe how we used electrophysiology to examine ketamine's impacts on the medial entorhinal cortex and hippocampus, which contain neurons that encode an animal's spatial position, as mice navigated virtual reality and real-world environments (Chapter 2). I then demonstrate how ketamine acutely increased firing rates, degraded cell-pair temporal firing-rate relationships, and altered oscillations, leading to longer-term remapping of spatial representa- tions (Chapter 2). I next investigated how in the reciprocally connected hippocampus, the activity of neurons that encode the position of the animal was suppressed after ketamine administration(Chapter 3). These findings demonstrate ketamine-induced dysfunction of the MEC-hippocampal circuit at the single cell, local-circuit population, and network levels, connecting previously demonstrated physiological effects of ketamine on spatial cognition to alterations in the spatial navigation circuit. I then discuss and provide preliminary results on the molecular mechanisms that could underly ketamine's effect on the spatial circuits in the entorhinal and hippocampal spatial circuits (Chapter 4). Finally, I discuss the implications of my findings both for spatial coding in the entorhinal-hippocampal formation and for our understanding of the neurological effects of ketamine (Chapter 5).
- 일반주제명
- Patients
- 일반주제명
- Cells
- 일반주제명
- Behavior
- 일반주제명
- Neurons
- 일반주제명
- Antidepressants
- 일반주제명
- Histology
- 일반주제명
- Memory
- 일반주제명
- Ketamine
- 일반주제명
- Psychotropic drugs
- 일반주제명
- Medical research
- 일반주제명
- Batch processing
- 일반주제명
- Animal cognition
- 일반주제명
- Recording sessions
- 일반주제명
- Virtual reality
- 일반주제명
- Drug dosages
- 일반주제명
- Behavioral sciences
- 일반주제명
- Information technology
- 일반주제명
- Medicine
- 일반주제명
- Pharmaceutical sciences
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 86-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798384339335
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a300
■1001 ▼aMasuda, Francis Kei-ichi.
■24510▼aThe Effect of Ketamine on Entorhinal and Hippocampal Spatial Maps
■260 ▼a[Sl]▼bStanford University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a90 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Giocomo, Lisa.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2024.
■520 ▼aKetamine is a commonly used rapid-acting anesthetic and acute antidepressant that carries undesirable spatial cognition side effects including out-of-body experiences and spatial memory impairments. Recently, ketamine has been receiving significant clinical and scientific attention due to its ability to acutely treat psychiatric disorders. Yet, despite the immense excitement that surrounds the clinical use of ketamine, its mechanism of action and neurological effects remain incompletely understood. Notably, previous studies have yet to reveal the neural substrates that underlie ketamine's effect on spatial cognition.Here, I describe how we used electrophysiology to examine ketamine's impacts on the medial entorhinal cortex and hippocampus, which contain neurons that encode an animal's spatial position, as mice navigated virtual reality and real-world environments (Chapter 2). I then demonstrate how ketamine acutely increased firing rates, degraded cell-pair temporal firing-rate relationships, and altered oscillations, leading to longer-term remapping of spatial representa- tions (Chapter 2). I next investigated how in the reciprocally connected hippocampus, the activity of neurons that encode the position of the animal was suppressed after ketamine administration(Chapter 3). These findings demonstrate ketamine-induced dysfunction of the MEC-hippocampal circuit at the single cell, local-circuit population, and network levels, connecting previously demonstrated physiological effects of ketamine on spatial cognition to alterations in the spatial navigation circuit. I then discuss and provide preliminary results on the molecular mechanisms that could underly ketamine's effect on the spatial circuits in the entorhinal and hippocampal spatial circuits (Chapter 4). Finally, I discuss the implications of my findings both for spatial coding in the entorhinal-hippocampal formation and for our understanding of the neurological effects of ketamine (Chapter 5).
■590 ▼aSchool code: 0212.
■650 4▼aPatients
■650 4▼aCells
■650 4▼aBehavior
■650 4▼aNeurons
■650 4▼aAntidepressants
■650 4▼aHistology
■650 4▼aMemory
■650 4▼aKetamine
■650 4▼aPsychotropic drugs
■650 4▼aMedical research
■650 4▼aBatch processing
■650 4▼aAnimal cognition
■650 4▼aRecording sessions
■650 4▼aVirtual reality
■650 4▼aDrug dosages
■650 4▼aBehavioral sciences
■650 4▼aInformation technology
■650 4▼aMedicine
■650 4▼aPharmaceutical sciences
■690 ▼a0414
■690 ▼a0602
■690 ▼a0489
■690 ▼a0564
■690 ▼a0572
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g86-03B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162979▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


