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Behavioral and Neural Population Dynamics of Foraging Decisions
Behavioral and Neural Population Dynamics of Foraging Decisions
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103131
- ISBN
- 9798286442607
- DDC
- 616
- 서명/저자
- Behavioral and Neural Population Dynamics of Foraging Decisions
- 발행사항
- [Sl] : University of Minnesota, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 93 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Hayden, Benjamin Y.
- 학위논문주기
- Thesis (Ph.D.)--University of Minnesota, 2025.
- 초록/해제
- 요약The adaptive value of the brain lies in its ability to generate a complex behavioral repertoire. This ability arises out of the computations that occur as sensory input is transformed into motor output. The process of behavioral selection, or decision making, as a collection of neurophysiological algorithms is therefore a useful paradigm for understanding how the brain works. Here, I argue for an approach to characterizing these algorithms that combines behavioral and theoretical insights with neurophysiology itself. I do so via three studies of decision making that highlight this confluence. In macaques performing a computerized foraging task, I observe that pupillary responses to potential reward outcomes appear to reflect relative (rather than absolute) reward value. The correlation of pupil size with reward also reverses once a decision has been made, suggesting a dynamic underlying computation. Next, I hypothesize that a widely observed suboptimal foraging behavior could be theoretically explained by accounting for the variability intrinsic to such dynamic decision making processes. Using a mathematical model of a patch foraging task, I show that representing accumulated reward thresholds as noisy distributions instead of specific values shifts the optimal strategy towards what is behaviorally observed. Finally, in order to characterize what a decision making algorithm based on relative value might physiologically entail, I analyze population dynamics in the orbitofrontal cortex. I find that higher offer values during the second epoch of a sequential decision making task elicit stronger perturbations of the population state. The strength of this perturbation, however, is biased by the population state entropy at the beginning of the epoch. The entropy, in turn, is systematically related to the value of the first offer, providing a potential algorithm for relative value comparison.
- 일반주제명
- Neurosciences
- 일반주제명
- Physiology
- 일반주제명
- Cognitive psychology
- 키워드
- Decision-making
- 키워드
- Dynamics
- 키워드
- Foraging
- 기타저자
- University of Minnesota Neuroscience
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798286442607
■035 ▼a(MiAaPQ)AAI31939778
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aCash-Padgett, Tyler.
■24510▼aBehavioral and Neural Population Dynamics of Foraging Decisions
■260 ▼a[Sl]▼bUniversity of Minnesota▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a93 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Hayden, Benjamin Y.
■5021 ▼aThesis (Ph.D.)--University of Minnesota, 2025.
■520 ▼aThe adaptive value of the brain lies in its ability to generate a complex behavioral repertoire. This ability arises out of the computations that occur as sensory input is transformed into motor output. The process of behavioral selection, or decision making, as a collection of neurophysiological algorithms is therefore a useful paradigm for understanding how the brain works. Here, I argue for an approach to characterizing these algorithms that combines behavioral and theoretical insights with neurophysiology itself. I do so via three studies of decision making that highlight this confluence. In macaques performing a computerized foraging task, I observe that pupillary responses to potential reward outcomes appear to reflect relative (rather than absolute) reward value. The correlation of pupil size with reward also reverses once a decision has been made, suggesting a dynamic underlying computation. Next, I hypothesize that a widely observed suboptimal foraging behavior could be theoretically explained by accounting for the variability intrinsic to such dynamic decision making processes. Using a mathematical model of a patch foraging task, I show that representing accumulated reward thresholds as noisy distributions instead of specific values shifts the optimal strategy towards what is behaviorally observed. Finally, in order to characterize what a decision making algorithm based on relative value might physiologically entail, I analyze population dynamics in the orbitofrontal cortex. I find that higher offer values during the second epoch of a sequential decision making task elicit stronger perturbations of the population state. The strength of this perturbation, however, is biased by the population state entropy at the beginning of the epoch. The entropy, in turn, is systematically related to the value of the first offer, providing a potential algorithm for relative value comparison.
■590 ▼aSchool code: 0130.
■650 4▼aNeurosciences
■650 4▼aPhysiology
■650 4▼aCognitive psychology
■653 ▼aDecision-making
■653 ▼aDynamics
■653 ▼aForaging
■690 ▼a0317
■690 ▼a0633
■690 ▼a0719
■71020▼aUniversity of Minnesota▼bNeuroscience.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0130
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357102▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


