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Dynamics of Artificial Sensory Representations in Mouse Somatosensory Cortex- [electronic resource]
Dynamics of Artificial Sensory Representations in Mouse Somatosensory Cortex - [electronic...
Dynamics of Artificial Sensory Representations in Mouse Somatosensory Cortex- [electronic resource]

Detailed Information

자료유형  
 학위논문파일 국외
최종처리일시  
20240214101156
ISBN  
9798380620062
DDC  
616
저자명  
Pancholi, Ravi.
서명/저자  
Dynamics of Artificial Sensory Representations in Mouse Somatosensory Cortex - [electronic resource]
발행사항  
[S.l.]: : New York University., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(238 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-04, Section: B.
주기사항  
Advisor: Peron, Simon P.
학위논문주기  
Thesis (Ph.D.)--New York University, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약Direct cortical stimulation has been used for over a century to identify the role that specific brain areas play in perception and behavior. Within sensory cortex, this technique has been used to reveal the function of cortical regions, modulate perception, and provide sensory feedback as part of brain-machine interfaces. However, because of technological limitations, we have yet to understand how direct cortical stimulation impacts the neurons and neural circuits within sensory cortex. In particular, we have a poor understanding of how sensory cortex responds to artificial stimulation over time and how the evoked activity interacts with existing cortical circuitry. In this dissertation, I describe my work using optogenetics and optical imaging to study the dynamics of artificial sensory representations in mouse primary vibrissal somatosensory cortex (vS1). First, using a combined photostimulation and two-photon imaging approach, I observe neural activity across training as animals learn or fail to learn an optical microstimulation discrimination task. I show that training is associated with a sparsification of the photostimulus response and that animals with greater response stability are more likely to learn the task. Next, I compare activity evoked by optical microstimulation of vS1 with that evoked by natural sensory stimuli. I find that photostimulation engages recurrently coupled neurons responding to whisker touch more than expected by chance. Repeated exposure to simultaneous touch and optogenetic stimuli increases the interaction between the two stimulus representations. These results provide insight into how activity evoked by direct cortical stimulation interacts with existing cortical circuits and how variability in artificial sensory representations may influence perception and behavior.
일반주제명  
Neurosciences.
일반주제명  
Biomedical engineering.
일반주제명  
Biology.
키워드  
Brain-machine interfaces
키워드  
Cortical plasticity
키워드  
Microstimulation
키워드  
Optogenetics
키워드  
Recurrent circuits
키워드  
Sensory cortex
기타저자  
New York University Basic Medical Science
기본자료저록  
Dissertations Abstracts International. 85-04B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798380620062
■035    ▼a(MiAaPQ)AAI30523982
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616
■1001  ▼aPancholi,  Ravi.
■24510▼aDynamics  of  Artificial  Sensory  Representations  in  Mouse  Somatosensory  Cortex▼h[electronic  resource]
■260    ▼a[S.l.]:▼bNew  York  University.  ▼c2023
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2023
■300    ▼a1  online  resource(238  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-04,  Section:  B.
■500    ▼aAdvisor:  Peron,  Simon  P.
■5021  ▼aThesis  (Ph.D.)--New  York  University,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aDirect  cortical  stimulation  has  been  used  for  over  a  century  to  identify  the  role  that  specific  brain  areas  play  in  perception  and  behavior.  Within  sensory  cortex,  this  technique  has  been  used  to  reveal  the  function  of  cortical  regions,  modulate  perception,  and  provide  sensory  feedback  as  part  of  brain-machine  interfaces.  However,  because  of  technological  limitations,  we  have  yet  to  understand  how  direct  cortical  stimulation  impacts  the  neurons  and  neural  circuits  within  sensory  cortex.  In  particular,  we  have  a  poor  understanding  of  how  sensory  cortex  responds  to  artificial  stimulation  over  time  and  how  the  evoked  activity  interacts  with  existing  cortical  circuitry.  In  this  dissertation,  I  describe  my  work  using  optogenetics  and  optical  imaging  to  study  the  dynamics  of  artificial  sensory  representations  in  mouse  primary  vibrissal  somatosensory  cortex  (vS1).  First,  using  a  combined  photostimulation  and  two-photon  imaging  approach,  I  observe  neural  activity  across  training  as  animals  learn  or  fail  to  learn  an  optical  microstimulation  discrimination  task.  I  show  that  training  is  associated  with  a  sparsification  of  the  photostimulus  response  and  that  animals  with  greater  response  stability  are  more  likely  to  learn  the  task.  Next,  I  compare  activity  evoked  by  optical  microstimulation  of  vS1  with  that  evoked  by  natural  sensory  stimuli.  I  find  that  photostimulation  engages  recurrently  coupled  neurons  responding  to  whisker  touch  more  than  expected  by  chance.  Repeated  exposure  to  simultaneous  touch  and  optogenetic  stimuli  increases  the  interaction  between  the  two  stimulus  representations.  These  results  provide  insight  into  how  activity  evoked  by  direct  cortical  stimulation  interacts  with  existing  cortical  circuits  and  how  variability  in  artificial  sensory  representations  may  influence  perception  and  behavior.
■590    ▼aSchool  code:  0146.
■650  4▼aNeurosciences.
■650  4▼aBiomedical  engineering.
■650  4▼aBiology.
■653    ▼aBrain-machine  interfaces
■653    ▼aCortical  plasticity
■653    ▼aMicrostimulation
■653    ▼aOptogenetics
■653    ▼aRecurrent  circuits
■653    ▼aSensory  cortex
■690    ▼a0317
■690    ▼a0541
■690    ▼a0306
■71020▼aNew  York  University▼bBasic  Medical  Science.
■7730  ▼tDissertations  Abstracts  International▼g85-04B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0146
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16933039▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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