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The Effect of Ketamine on Entorhinal and Hippocampal Spatial Maps
The Effect of Ketamine on Entorhinal and Hippocampal Spatial Maps
The Effect of Ketamine on Entorhinal and Hippocampal Spatial Maps

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자료유형  
 학위논문 서양
최종처리일시  
20250211152119
ISBN  
9798384339335
DDC  
300
저자명  
Masuda, Francis Kei-ichi.
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  
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MARC

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■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.

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