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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 in Mouse Cortex
상세정보
- 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
- Friction
- 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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■020 ▼a9798291563878
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■035 ▼a(MiAaPQ)httphdlhandlenet2142121522
■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.


