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Flexible Opto-Electro-Chemical Neural Probes for Neuromodulation and Imaging
Flexible Opto-Electro-Chemical Neural Probes for Neuromodulation and Imaging
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152936
- ISBN
- 9798384456360
- DDC
- 621.3
- 서명/저자
- Flexible Opto-Electro-Chemical Neural Probes for Neuromodulation and Imaging
- 발행사항
- [Sl] : Carnegie Mellon University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 127 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- 주기사항
- Advisor: Chamanzar, Maysamreza.
- 학위논문주기
- Thesis (Ph.D.)--Carnegie Mellon University, 2024.
- 초록/해제
- 요약Brain consists of billions of neurons interconnected through complex circuits to perform functions. Understanding the neural basis of brain function requires probing neural circuits and understanding the specific roles of various cell types within the brain. Simultaneous neuromodulation and electrophysiology recording with high spatial and temporal resolution can help us isolate and study neural circuits. In this thesis, we discuss novel flexible neural probes for multi-modal neural interfacing with the brain. These implantable flexible neural probes are microfabricated on biocompatible, flexible substrates to provide three functionalities, i.e., (i) electrophysiology recording, (ii) endoscopic microimaging, and (iii) chemical stimulation to enable studying specific cell-types and neural circuit dynamics in the brain. These flexible neural implants can help advance basic neuroscience research and also devise effective therapeutics for brain disorders. First, I introduce a fully flexible electrochemical neural probe designed for chemical neuromodulation using an electrically-actuated drug delivery mechanism, enabling highly localized, on-demand/controlled release of neurotransmitters. The evoked neural response is monitored using high-resolution electrophysiology recording. This tool allows researchers to modulate neurotransmitter activity and thereby activate or inhibit neurons to study their roles within neural circuits in normal as well as diseased conditions. Brain function resulted from population activities of different cell types categorized based on their transcriptional profiles. To identify and study specific cell types within a population, cells can be tagged and imaged based on their genetic profiles using photometry techniques. However, photometric imaging is usually carried out using single-channel bulky fiber optics, thus lacking spatial resolution and causing significant tissue damage. To address these issues, I introduced an ultra-miniaturized microimager endoscope using a novel thin-film flexible, miniaturized optical waveguide array designed for localized fluorescent imaging with high spatial resolution. With a thickness of only 7 µm, this implantable microimager can image from 20 channels over a width of 400 µm to spatially discriminate different regions in the brain. This technology can be used to study the roles of specific cells tagged within different brain regions. To modulate the activity of specific cell types within the brain tissue, I have shown that the thin-film waveguide array can also be used for light delivery and optogenetic stimulation. To this end, I have optimized a microfabrication process to integrate electrical recording functionality with the optical waveguide array. I will discuss the design, implementation, characterization, and demonstration of these neural technologies, all realized on thin-film flexible polymer neural implants.
- 일반주제명
- Electrical engineering
- 일반주제명
- Neurosciences
- 일반주제명
- Optics
- 일반주제명
- Computer engineering
- 일반주제명
- Biomedical engineering
- 키워드
- Optogenetics
- 기타저자
- Carnegie Mellon University Electrical and Computer Engineering
- 기본자료저록
- Dissertations Abstracts International. 86-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017164228
■00520250211152936
■006m o d
■007cr#unu||||||||
■020 ▼a9798384456360
■035 ▼a(MiAaPQ)AAI31563547
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a621.3
■1001 ▼aMalekoshoaraie, Mohammad Hassan.
■24510▼aFlexible Opto-Electro-Chemical Neural Probes for Neuromodulation and Imaging
■260 ▼a[Sl]▼bCarnegie Mellon University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a127 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Chamanzar, Maysamreza.
■5021 ▼aThesis (Ph.D.)--Carnegie Mellon University, 2024.
■520 ▼aBrain consists of billions of neurons interconnected through complex circuits to perform functions. Understanding the neural basis of brain function requires probing neural circuits and understanding the specific roles of various cell types within the brain. Simultaneous neuromodulation and electrophysiology recording with high spatial and temporal resolution can help us isolate and study neural circuits. In this thesis, we discuss novel flexible neural probes for multi-modal neural interfacing with the brain. These implantable flexible neural probes are microfabricated on biocompatible, flexible substrates to provide three functionalities, i.e., (i) electrophysiology recording, (ii) endoscopic microimaging, and (iii) chemical stimulation to enable studying specific cell-types and neural circuit dynamics in the brain. These flexible neural implants can help advance basic neuroscience research and also devise effective therapeutics for brain disorders. First, I introduce a fully flexible electrochemical neural probe designed for chemical neuromodulation using an electrically-actuated drug delivery mechanism, enabling highly localized, on-demand/controlled release of neurotransmitters. The evoked neural response is monitored using high-resolution electrophysiology recording. This tool allows researchers to modulate neurotransmitter activity and thereby activate or inhibit neurons to study their roles within neural circuits in normal as well as diseased conditions. Brain function resulted from population activities of different cell types categorized based on their transcriptional profiles. To identify and study specific cell types within a population, cells can be tagged and imaged based on their genetic profiles using photometry techniques. However, photometric imaging is usually carried out using single-channel bulky fiber optics, thus lacking spatial resolution and causing significant tissue damage. To address these issues, I introduced an ultra-miniaturized microimager endoscope using a novel thin-film flexible, miniaturized optical waveguide array designed for localized fluorescent imaging with high spatial resolution. With a thickness of only 7 µm, this implantable microimager can image from 20 channels over a width of 400 µm to spatially discriminate different regions in the brain. This technology can be used to study the roles of specific cells tagged within different brain regions. To modulate the activity of specific cell types within the brain tissue, I have shown that the thin-film waveguide array can also be used for light delivery and optogenetic stimulation. To this end, I have optimized a microfabrication process to integrate electrical recording functionality with the optical waveguide array. I will discuss the design, implementation, characterization, and demonstration of these neural technologies, all realized on thin-film flexible polymer neural implants.
■590 ▼aSchool code: 0041.
■650 4▼aElectrical engineering
■650 4▼aNeurosciences
■650 4▼aOptics
■650 4▼aComputer engineering
■650 4▼aBiomedical engineering
■653 ▼aChemical neuromodulation
■653 ▼aElectrophysiology recording
■653 ▼aFlexible neural implants
■653 ▼aFluorescence imaging
■653 ▼aMultimodal neural probes
■653 ▼aOptogenetics
■690 ▼a0544
■690 ▼a0317
■690 ▼a0752
■690 ▼a0541
■690 ▼a0464
■71020▼aCarnegie Mellon University▼bElectrical and Computer Engineering.
■7730 ▼tDissertations Abstracts International▼g86-03B.
■790 ▼a0041
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164228▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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