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Modeling Friction Force Avalanches in Molybdenum Disulfide and Spiking Neuronal Avalanches in Mouse Cortex
Modeling Friction Force Avalanches in Molybdenum Disulfide and Spiking Neuronal Avalanches...
Modeling Friction Force Avalanches in Molybdenum Disulfide and Spiking Neuronal Avalanches in Mouse Cortex

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105210
ISBN  
9798291563878
DDC  
530
저자명  
Salners, Tyler.
서명/저자  
Modeling Friction Force Avalanches in Molybdenum Disulfide and Spiking Neuronal Avalanches in Mouse Cortex
발행사항  
[Sl] : University of Illinois at Urbana-Champaign, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
144 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
주기사항  
Advisor: Chemla, Yann R.
학위논문주기  
Thesis (Ph.D.Physics.)--University of Illinois at Urbana-Champaign, 2023.
초록/해제  
요약In nature we find widely varying systems can sometimes be described by a single set of simple laws. For example, intermittent jumps of both sliding tectonic plates (during an earthquake) and spontaneous magnetization (the Barkhausen effect in magnets) follow the same set of "crackling" laws. Crackling refers to the quick jumps between metastable configurations that are facilitated by slow external forcing in a disordered system. The cascades of jumps (referred to as 'avalanches') follow simple scaling laws for quantities like their size and duration. In this work, we highlight two systems that follow scaling laws and compute predictions about the system using avalanches. Building on a simple slip model we show that friction force fluctuations of molybdenum-disulfide may result from slip-avalanches. We show how experimental conditions can affect the observed scaling behavior, and thus provide a blueprint for the interpretation of data in a range of other systems which might have similar experimental conditions. Importantly, we find that building the experimental conditions into the model yields good agreement with the experimental results. Next, we study fluctuations of spiking neurons in mice cortex. They too can be described as avalanches and follow similar statistics as the slips in the friction experiments. Here we use the same basic avalanche model used for friction, and to capture the essential physics of inhibition and recurrent firing, we add mean field connections to an external inhibitory population and a threshold reduction mechanism, respectively. We find that this simple model can mimic many statistical properties of the data. We show that model simulations with a few biological tweaks can even reproduce empirical signatures of recurrent firing. Finally, we show that though the inhibitory species are the minority population, they make up a majority of the activity in neuronal avalanches. We demonstrate the models ability to reproduce this inhibitory dominance and conclude with future directions.
일반주제명  
Physics
일반주제명  
Applied physics
일반주제명  
Condensed matter physics
키워드  
Avalanches
키워드  
Statistical physics
키워드  
Friction
키워드  
Neuronal dynamics
기타저자  
University of Illinois at Urbana-Champaign Physics
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530
■1001  ▼aSalners,  Tyler.
■24510▼aModeling  Friction  Force  Avalanches  in  Molybdenum  Disulfide  and  Spiking  Neuronal  Avalanches  in  Mouse  Cortex
■260    ▼a[Sl]▼bUniversity  of  Illinois  at  Urbana-Champaign▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a144  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-03,  Section:  B.
■500    ▼aAdvisor:  Chemla,  Yann  R.
■5021  ▼aThesis  (Ph.D.Physics.)--University  of  Illinois  at  Urbana-Champaign,  2023.
■520    ▼aIn  nature  we  find  widely  varying  systems  can  sometimes  be  described  by  a  single  set  of  simple  laws.  For  example,  intermittent  jumps  of  both  sliding  tectonic  plates  (during  an  earthquake)  and  spontaneous  magnetization  (the  Barkhausen  effect  in  magnets)  follow  the  same  set  of  "crackling"  laws.  Crackling  refers  to  the  quick  jumps  between  metastable  configurations  that  are  facilitated  by  slow  external  forcing  in  a  disordered  system.  The  cascades  of  jumps  (referred  to  as  'avalanches')  follow  simple  scaling  laws  for  quantities  like  their  size  and  duration.  In  this  work,  we  highlight  two  systems  that  follow  scaling  laws  and  compute  predictions  about  the  system  using  avalanches.  Building  on  a  simple  slip  model  we  show  that  friction  force  fluctuations  of  molybdenum-disulfide  may  result  from  slip-avalanches.  We  show  how  experimental  conditions  can  affect  the  observed  scaling  behavior,  and  thus  provide  a  blueprint  for  the  interpretation  of  data  in  a  range  of  other  systems  which  might  have  similar  experimental  conditions.  Importantly,  we  find  that  building  the  experimental  conditions  into  the  model  yields  good  agreement  with  the  experimental  results.  Next,  we  study  fluctuations  of  spiking  neurons  in  mice  cortex.  They  too  can  be  described  as  avalanches  and  follow  similar  statistics  as  the  slips  in  the  friction  experiments.  Here  we  use  the  same  basic  avalanche  model  used  for  friction,  and  to  capture  the  essential  physics  of  inhibition  and  recurrent  firing,  we  add  mean  field  connections  to  an  external  inhibitory  population  and  a  threshold  reduction  mechanism,  respectively.  We  find  that  this  simple  model  can  mimic  many  statistical  properties  of  the  data.  We  show  that  model  simulations  with  a  few  biological  tweaks  can  even  reproduce  empirical  signatures  of  recurrent  firing.  Finally,  we  show  that  though  the  inhibitory  species  are  the  minority  population,  they  make  up  a  majority  of  the  activity  in  neuronal  avalanches.  We  demonstrate  the  models  ability  to  reproduce  this  inhibitory  dominance  and  conclude  with  future  directions.
■590    ▼aSchool  code:  0090.
■650  4▼aPhysics
■650  4▼aApplied  physics
■650  4▼aCondensed  matter  physics
■653    ▼aAvalanches
■653    ▼aStatistical  physics
■653    ▼aFriction
■653    ▼aNeuronal  dynamics
■690    ▼a0605
■690    ▼a0611
■690    ▼a0215
■71020▼aUniversity  of  Illinois  at  Urbana-Champaign▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g87-03B.
■790    ▼a0090
■791    ▼aPh.D.Physics.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359769▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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