본문

Computational Principles Underlying Contextual Modulations in Visual Perception- [electronic resource]
Computational Principles Underlying Contextual Modulations in Visual Perception - [electro...
내용보기
Computational Principles Underlying Contextual Modulations in Visual Perception- [electronic resource]
자료유형  
 학위논문파일 국외
최종처리일시  
20240214101214
ISBN  
9798380388214
DDC  
152
저자명  
Mao, Jiang.
서명/저자  
Computational Principles Underlying Contextual Modulations in Visual Perception - [electronic resource]
발행사항  
[S.l.]: : University of Pennsylvania., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(130 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
주기사항  
Advisor: Stocker, Alan A.
학위논문주기  
Thesis (Ph.D.)--University of Pennsylvania, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약Perception is constantly modulated by context, including temporal context, spatial context, structural context, etc. The same stimulus may be perceived differently under different contexts. Studying the contextual modulation of perception may provides deep insight into the computational principles of the sensory system. The present thesis sheds light on the computational principles underlying these contextual modulation. In Chapter 2, I test the efficient coding principle during sensory adaptation (temporal context). I measure the orientation discrimination threshold in human observers and extract the difference in coding accuracy under different adaptation states. By comparing the extracted coding accuracy with the image statistics analyzed from the retinal input of freely behaving human subjects under natural conditions and the Fisher information in a recurrent neural network trained on natural scene videos to predict the next frame while performing the same task as human subjects, I provide evidence for the efficient coding explanation of the adaptation effect, namely, adaptation to the recent history of sensory input establishes efficient sensory representations for the next expected sensory input. In Chapter 3, I present results on the structural context in visual orientation perception. I propose a holistic matching model that assumes perception is a holistic inference process that simultaneously operates at all levels of the representational hierarchy. Validation against multiple existing psychophysical datasets and data from a new psychophysical experiment demonstrates that compared to previous models, our model provides a quantitatively accurate and detailed description of subjects' behavior, which includes categorical contextual effects that previous models have failed to even qualitatively account for. I also show that the model generalizes to other features and thus offers a universal explanation for categorical contextual modulation in low-level sensory perception. Together, this thesis advances our understanding of visual perception under contextual modulations and provides insight into the underlying computational principles from a normative perspective on both the encoding and decoding process of perception.
일반주제명  
Experimental psychology.
일반주제명  
Neurosciences.
일반주제명  
Psychology.
키워드  
Bayesian inference
키워드  
Categorical contextual effects
키워드  
Computational principles
키워드  
Orientation perception
키워드  
Sensory adaptation
키워드  
Visual perception
기타저자  
University of Pennsylvania Psychology
기본자료저록  
Dissertations Abstracts International. 85-03B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.
신착도서 더보기
최근 3년간 통계입니다.

소장정보

  • 예약
  • 소재불명신고
  • 나의폴더
  • 우선정리요청
  • 비도서대출신청
  • 야간 도서대출신청
소장자료
등록번호 청구기호 소장처 대출가능여부 대출정보
TF07117 전자도서
마이폴더 부재도서신고 비도서대출신청

* 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

해당 도서를 다른 이용자가 함께 대출한 도서

관련 인기도서

로그인 후 이용 가능합니다.