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The Multifunctional Nature of Motor Cortex- [electronic resource]
The Multifunctional Nature of Motor Cortex- [electronic resource]

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자료유형  
 학위논문
Control Number  
0016930992
International Standard Book Number  
9798380620833
Dewey Decimal Classification Number  
620.5
Main Entry-Personal Name  
Telian, Gregory Isaiah.
Publication, Distribution, etc. (Imprint  
[S.l.] : University of California, Berkeley., 2021
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2021
Physical Description  
1 online resource(198 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 85-04, Section: B.
General Note  
Advisor: Adesnik, Hillel.
Dissertation Note  
Thesis (Ph.D.)--University of California, Berkeley, 2021.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Summary, Etc.  
요약The cerebral cortex is responsible for neural functions ranging from basic sensory processing to complex decision making. However, the underlying neural processes and the precise function of some cortical areas are not well understood. For humans the cortex is invaluable, providing us with our most powerful cognitive traits. For some species, the cortex can be removed leaving only minor deficits. Stark contrasts like these blur the overall function and importance of cortex. Recent advancements in recording and analysis technology present us with a unique opportunity to search for neural processes previously impossible to find. Recent work has found cortical regions in mice that do more than their functional name implies, in contrast to the specialized cortical regions in higher order species. In this study we explore the hidden functions of mouse motor cortex and elaborate on its role in the whisker system. The mouse whisker system is traditionally divided into sensory regions and motor regions, with sensory cortex (vS1) and motor cortex (vM1) sitting on the border. The functional divisions between sensory and motor cortex have recently blurred, both regions able to drive movements and encode sensory information. Whisker motor cortex, specifically, exhibits disparate functions, making it an ideal place to study multirole cortex. Here we take advantage of advanced neural recording and analysis techniques and uncover a motor cortex that acts as a sensory and possibly a higher order cortical region as well.In chapter 1, I provide an overview of how cortical regions were defined and then summarize how modern research is blurring the lines between functionally defined cortical areas. I then introduce sensory processing in the mouse whisker system with a focus on motor cortex, a cortical region where its function is increasingly blurring, and then describe how my research explored non-motor functionality in a motor region. In chapter 2, I present my first first-author publication where we determined if somatosensory cortex integrates sensory information over short or long timescales in order to estimate "mean" variables. In this work I first use neural decoding to quantify how well each neuron represents pieces of sensory information and find that some neurons correlate with choice. Chapter 3 is work that I collaborated on, we determined how multiple sensors contribute to the receptive field of individual neurons and the broader population. We discovered a map of sensory space distributed across somatosensory cortex and determined the map was dependent on neurons integrating information from multiple sensors in parallel. Chapter 4, we explore whether somatosensory cortex is necessary for a whisker dependent discrimination task and further determine what arrangement of sensors are required for task completion. Finally, in Chapter 5 I present my main project investigating vibrissae motor cortex. Here I study the sensory responses present in motor cortex, quantifying vM1 sensory tuning for the first time, and ultimately determining that vS1 does not drive the activity as previously thought. Incredibly, vM1 is not required for whisker movements in general but is required during demanding whisker dependent contexts, such as a whisker discrimination task, affecting both choice, whisker movements, and onset of lick response. Finally, in Chapter 6, I summarize what this tells us about sensory processing, propose some ideas for future research, and discuss how modern tools can enable us to find hidden functionality.
Subject Added Entry-Topical Term  
Nanoscience.
Subject Added Entry-Topical Term  
Behavioral sciences.
Subject Added Entry-Topical Term  
Neurosciences.
Index Term-Uncontrolled  
Behavior
Index Term-Uncontrolled  
Cortex
Index Term-Uncontrolled  
motor
Index Term-Uncontrolled  
Sensation
Index Term-Uncontrolled  
Sensory
Index Term-Uncontrolled  
Whisker
Added Entry-Corporate Name  
University of California, Berkeley Neuroscience
Host Item Entry  
Dissertations Abstracts International. 85-04B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:639400

MARC

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■1001  ▼aTelian,  Gregory  Isaiah.
■24510▼aThe  Multifunctional  Nature  of  Motor  Cortex▼h[electronic  resource]
■260    ▼a[S.l.]▼bUniversity  of  California,  Berkeley.  ▼c2021
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2021
■300    ▼a1  online  resource(198  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-04,  Section:  B.
■500    ▼aAdvisor:  Adesnik,  Hillel.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Berkeley,  2021.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aThe  cerebral  cortex  is  responsible  for  neural  functions  ranging  from  basic  sensory  processing  to  complex  decision  making.  However,  the  underlying  neural  processes  and  the  precise  function  of  some  cortical  areas  are  not  well  understood.  For  humans  the  cortex  is  invaluable,  providing  us  with  our  most  powerful  cognitive  traits.  For  some  species,  the  cortex  can  be  removed  leaving  only  minor  deficits.  Stark  contrasts  like  these  blur  the  overall  function  and  importance  of  cortex.  Recent  advancements  in  recording  and  analysis  technology  present  us  with  a  unique  opportunity  to  search  for  neural  processes  previously  impossible  to  find.  Recent  work  has  found  cortical  regions  in  mice  that  do  more  than  their  functional  name  implies,  in  contrast  to  the  specialized  cortical  regions  in  higher  order  species.  In  this  study  we  explore  the  hidden  functions  of  mouse  motor  cortex  and  elaborate  on  its  role  in  the  whisker  system.  The  mouse  whisker  system  is  traditionally  divided  into  sensory  regions  and  motor  regions,  with  sensory  cortex  (vS1)  and  motor  cortex  (vM1)  sitting  on  the  border.  The  functional  divisions  between  sensory  and  motor  cortex  have  recently  blurred,  both  regions  able  to  drive  movements  and  encode  sensory  information.  Whisker  motor  cortex,  specifically,  exhibits  disparate  functions,  making  it  an  ideal  place  to  study  multirole  cortex.  Here  we  take  advantage  of  advanced  neural  recording  and  analysis  techniques  and  uncover  a  motor  cortex  that  acts  as  a  sensory  and  possibly  a  higher  order  cortical  region  as  well.In  chapter  1,  I  provide  an  overview  of  how  cortical  regions  were  defined  and  then  summarize  how  modern  research  is  blurring  the  lines  between  functionally  defined  cortical  areas.  I  then  introduce  sensory  processing  in  the  mouse  whisker  system  with  a  focus  on  motor  cortex,  a  cortical  region  where  its  function  is  increasingly  blurring,  and  then  describe  how  my  research  explored  non-motor  functionality  in  a  motor  region.  In  chapter  2,  I  present  my  first  first-author  publication  where  we  determined  if  somatosensory  cortex  integrates  sensory  information  over  short  or  long  timescales  in  order  to  estimate  "mean"  variables.  In  this  work  I  first  use  neural  decoding  to  quantify  how  well  each  neuron  represents  pieces  of  sensory  information  and  find  that  some  neurons  correlate  with  choice.  Chapter  3  is  work  that  I  collaborated  on,  we  determined  how  multiple  sensors  contribute  to  the  receptive  field  of  individual  neurons  and  the  broader  population.  We  discovered  a  map  of  sensory  space  distributed  across  somatosensory  cortex  and  determined  the  map  was  dependent  on  neurons  integrating  information  from  multiple  sensors  in  parallel.  Chapter  4,  we  explore  whether  somatosensory  cortex  is  necessary  for  a  whisker  dependent  discrimination  task  and  further  determine  what  arrangement  of  sensors  are  required  for  task  completion.  Finally,  in  Chapter  5  I  present  my  main  project  investigating  vibrissae  motor  cortex.  Here  I  study  the  sensory  responses  present  in  motor  cortex,  quantifying  vM1  sensory  tuning  for  the  first  time,  and  ultimately  determining  that  vS1  does  not  drive  the  activity  as  previously  thought.  Incredibly,  vM1  is  not  required  for  whisker  movements  in  general  but  is  required  during  demanding  whisker  dependent  contexts,  such  as  a  whisker  discrimination  task,  affecting  both  choice,  whisker  movements,  and  onset  of  lick  response.  Finally,  in  Chapter  6,  I  summarize  what  this  tells  us  about  sensory  processing,  propose  some  ideas  for  future  research,  and  discuss  how  modern  tools  can  enable  us  to  find  hidden  functionality.
■590    ▼aSchool  code:  0028.
■650  4▼aNanoscience.
■650  4▼aBehavioral  sciences.
■650  4▼aNeurosciences.
■653    ▼aBehavior
■653    ▼aCortex
■653    ▼amotor
■653    ▼aSensation
■653    ▼aSensory
■653    ▼aWhisker
■690    ▼a0565
■690    ▼a0602
■690    ▼a0317
■71020▼aUniversity  of  California,  Berkeley▼bNeuroscience.
■7730  ▼tDissertations  Abstracts  International▼g85-04B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0028
■791    ▼aPh.D.
■792    ▼a2021
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16930992▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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