서브메뉴
검색
Attention in Space and Time: From Behavior to Neural Mechanisms- [electronic resource]
![Attention in Space and Time: From Behavior to Neural Mechanisms - [electronic resource]](/Users/Baul/Images/book.png)
Attention in Space and Time: From Behavior to Neural Mechanisms- [electronic resource]
상세정보
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101915
- ISBN
- 9798380416115
- DDC
- 616
- 저자명
- Yang, Xiaofang.
- 서명/저자
- Attention in Space and Time: From Behavior to Neural Mechanisms - [electronic resource]
- 발행사항
- [S.l.]: : Princeton University., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(121 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
- 주기사항
- Advisor: Kastner, Sabine.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 초록/해제
- 요약In the human brain, visual attention has been predominantly studied using methods with high spatial, but poor temporal resolution such as fMRI, or high temporal, but poor spatial resolution such as EEG/MEG. We investigated the temporal dynamics and attention effects across the human visual system at a mesoscopic level that combines precise spatial and temporal measurements by using electrocorticography in epilepsy patients performing a spatial attention task. Electrode locations were reconstructed using a probabilistic atlas of the human visual system, thereby relating them to topography and processing hierarchy. We demonstrate regional differences in temporal dynamics and modulatory effects of spatial attention across the visual processing hierarchy. Our findings only partially support attentional top-down models that promote influences on visual cortex by reversing the processing hierarchy. Further, we explored the neural underpinnings of selective attention involved in target enhancement and distractor suppression. Whether these two aspects engage similar or divergent cortical neuronal populations, and how they are implemented in the human visual system to map spatial attention remain unclear. We characterized the cortical distribution and temporal dynamics of alpha-band oscillations, demonstrating a spatiotemporal dissociation between population neural activities engaged in target enhancement and distractor suppression during the deployment of spatial attention. We also found that interareal communication is enhanced through cross-frequency interactions along the visual hierarchy to facilitate the processing of a spatially predictable target. In contrast, sensory processing and interareal communication are suppressed through local cross-frequency modulation to attenuate the processing of potential distractors. Our findings reveal that such a distributed cortical organization and complementary neural mechanisms enable efficient gating and filtering of sensory information in the anticipatory processing of spatial attention. In addition to visual spatial attention, we also probed auditory temporal attention and examined its modulatory effect on temporal expectation using structured sound sequences with varied predictability. We observed an improved behavioral performance in healthy subjects when detecting targets embedded in a predictable temporal structure. We also found that target detection was enhanced for the attended sequence while attenuated for the unattended sequence, with an additional facilitation derived from fast adaptive theta entrainment.
- 일반주제명
- Neurosciences.
- 일반주제명
- Cognitive psychology.
- 일반주제명
- Behavioral psychology.
- 키워드
- Psychophysics
- 기타저자
- Princeton University Psychology
- 기본자료저록
- Dissertations Abstracts International. 85-03B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008240612s2023 us |||||||||||||||c||eng d■001000016935294
■00520240214101915
■006m o d
■007cr#unu||||||||
■020 ▼a9798380416115
■035 ▼a(MiAaPQ)AAI30687938
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aYang, Xiaofang.
■24510▼aAttention in Space and Time: From Behavior to Neural Mechanisms▼h[electronic resource]
■260 ▼a[S.l.]:▼bPrinceton University. ▼c2023
■260 1▼aAnn Arbor :▼bProQuest Dissertations & Theses, ▼c2023
■300 ▼a1 online resource(121 p.)
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-03, Section: B.
■500 ▼aAdvisor: Kastner, Sabine.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2023.
■506 ▼aThis item must not be sold to any third party vendors.
■520 ▼aIn the human brain, visual attention has been predominantly studied using methods with high spatial, but poor temporal resolution such as fMRI, or high temporal, but poor spatial resolution such as EEG/MEG. We investigated the temporal dynamics and attention effects across the human visual system at a mesoscopic level that combines precise spatial and temporal measurements by using electrocorticography in epilepsy patients performing a spatial attention task. Electrode locations were reconstructed using a probabilistic atlas of the human visual system, thereby relating them to topography and processing hierarchy. We demonstrate regional differences in temporal dynamics and modulatory effects of spatial attention across the visual processing hierarchy. Our findings only partially support attentional top-down models that promote influences on visual cortex by reversing the processing hierarchy. Further, we explored the neural underpinnings of selective attention involved in target enhancement and distractor suppression. Whether these two aspects engage similar or divergent cortical neuronal populations, and how they are implemented in the human visual system to map spatial attention remain unclear. We characterized the cortical distribution and temporal dynamics of alpha-band oscillations, demonstrating a spatiotemporal dissociation between population neural activities engaged in target enhancement and distractor suppression during the deployment of spatial attention. We also found that interareal communication is enhanced through cross-frequency interactions along the visual hierarchy to facilitate the processing of a spatially predictable target. In contrast, sensory processing and interareal communication are suppressed through local cross-frequency modulation to attenuate the processing of potential distractors. Our findings reveal that such a distributed cortical organization and complementary neural mechanisms enable efficient gating and filtering of sensory information in the anticipatory processing of spatial attention. In addition to visual spatial attention, we also probed auditory temporal attention and examined its modulatory effect on temporal expectation using structured sound sequences with varied predictability. We observed an improved behavioral performance in healthy subjects when detecting targets embedded in a predictable temporal structure. We also found that target detection was enhanced for the attended sequence while attenuated for the unattended sequence, with an additional facilitation derived from fast adaptive theta entrainment.
■590 ▼aSchool code: 0181.
■650 4▼aNeurosciences.
■650 4▼aCognitive psychology.
■650 4▼aBehavioral psychology.
■653 ▼aAuditory temporal attention
■653 ▼aElectrocorticography
■653 ▼aPsychophysics
■653 ▼aVisual spatial attention
■690 ▼a0317
■690 ▼a0633
■690 ▼a0384
■71020▼aPrinceton University▼bPsychology.
■7730 ▼tDissertations Abstracts International▼g85-03B.
■773 ▼tDissertation Abstract International
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16935294▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a202402▼f2024
