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Navigating a Dynamic World: How Attention Shapes the Content and Structure of Episodic Memory
Navigating a Dynamic World: How Attention Shapes the Content and Structure of Episodic Memory
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105151
- ISBN
- 9798293831821
- DDC
- 153
- 저자명
- Huang, Ringo H.
- 서명/저자
- Navigating a Dynamic World: How Attention Shapes the Content and Structure of Episodic Memory
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 150 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Clewett, David.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약At every moment of our waking lives, our senses are confronted with an endless stream of stimuli. Yet only a fraction of the inputs, those that we truly care about, reach conscious awareness. Attention performs this remarkable feat of selective filtering, prioritizing the processing of information that most aligns with our interests. These interests are also ever-shifting, not just in response to changes in external conditions, but also to natural internal fluctuations driven by our motivations, desires, and expectations. This dynamic interaction between attention, our inner state, and the external world shapes how we experience and remember our lives.Chapter 1 provides an overview of attention and arousal theories, beginning with classic capacity models and how they (1) explain key empirical findings like the arousal-performance curve(s) and (2) resolve conflicting accounts such as the rigidity-lability paradox. I then examine neurobiological theories that subserve these cognitive models, focusing on the noradrenergic circuitry underlying arousal's distributed influences and the neuromodulatory interactions that tune and sustain neuronal activity.Chapter 2 investigates the attentional boost effect (ABE), in which detecting a goal-relevant target in one task enhances memory for concurrent, task-irrelevant information. Although seemingly at odds with dual-task interference predictions, ABE may offer a clue into the subtle influences of our dynamic attentional system on episodic memory. Using a category-specific design and Signal Detection Theory, we determined that the boost in recognition memory reflects a shift in response criterion rather than an improvement in memory sensitivity. This suggests that the boosted memory representations are more conceptual than perceptual. Moreover, pupil-linked arousal responses predicted worse recognition memory under most conditions, but critically, this relationship was disrupted for trials that were accompanied by a novel target. Together, these results suggest that ABE may arise from a disinhibitory mechanism that biases memory towards gist-based traces. This leads us to propose that Fuzzy Trace Theory may provide a useful complementary framework that extends the explanatory value of existing ABE models.As originally formulated, ABE suggests that attention promotes the binding of peripheral information at event boundaries, or contextual shifts in our episodic experience that demark the end of one event and the start of the next. Using an event segmentation paradigm, participants judged objects while responding to auditory tones that periodically switched ears and pitch, signaling a change in response hand and a new perceptual-goal context. We examined pupil variability, an index of attentional stability, during 5-item windows that spanned across contexts or remained within the same context. We found that lower variability predicted better temporal order memory and stronger item recognition during the same 5-item window, suggesting that attentional stability supported both temporal structure and item encoding. At the neural level, pattern similarity in the object-selective lateral occipital cortex (LOC) predicted recognition for items studied within the same context, but not across boundaries. Mediation analyses indicated that the LOC-recognition link was partially explained by pupil variability, highlighting attentional stability's role in stabilizing perceptual representations thereby supporting successful memory encoding.Chapter 4 explores how naturalistic emotional fluctuations shape the temporal organization of memory. To induce shifts in emotional context, participants viewed sequences of everyday objects while generating narratives and listening to instrumental music composed with three distinct emotional segments. We introduced a novel measure of temporal structure, the Time's Arrow Task (TAT), in which participants placed previously studied items on a timeline to indicate when they believed each had occurred. Participants also provided continuous ratings of valence and arousal in response to the music. At the list level, greater variability in arousal predicted poorer temporal memory organization, as reflected by increased Mean Absolute Displacement (MAD) on the TAT. Local analyses revealed that MAD was significantly higher when comparing 5-item windows that spanned emotional boundaries compared to windows within the same musical context. Transitions across emotional contexts were associated with greater fluctuations in arousal and impaired temporal structure, with boundary-related increases in arousal variability further predicting elevated MAD. Together, these findings highlight the nuanced influence of arousal fluctuations on the temporal structure of episodic memory, emphasizing the critical role of emotional dynamics in shaping how events are temporally organized.In summary, across three empirical studies, this dissertation reveals how the attention-arousal system shapes not only the fidelity of what we remember but also the temporal structure in which memories are organized.
- 일반주제명
- Cognitive psychology
- 일반주제명
- Psychology
- 일반주제명
- Physiological psychology
- 키워드
- Arousal
- 키워드
- Attention
- 키워드
- Fuzzy
- 키워드
- Memory
- 키워드
- Neuroimaging
- 키워드
- Pupillometry
- 기타저자
- University of California, Los Angeles Psychology 0780
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a153
■1001 ▼aHuang, Ringo H.
■24510▼aNavigating a Dynamic World: How Attention Shapes the Content and Structure of Episodic Memory
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a150 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Clewett, David.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aAt every moment of our waking lives, our senses are confronted with an endless stream of stimuli. Yet only a fraction of the inputs, those that we truly care about, reach conscious awareness. Attention performs this remarkable feat of selective filtering, prioritizing the processing of information that most aligns with our interests. These interests are also ever-shifting, not just in response to changes in external conditions, but also to natural internal fluctuations driven by our motivations, desires, and expectations. This dynamic interaction between attention, our inner state, and the external world shapes how we experience and remember our lives.Chapter 1 provides an overview of attention and arousal theories, beginning with classic capacity models and how they (1) explain key empirical findings like the arousal-performance curve(s) and (2) resolve conflicting accounts such as the rigidity-lability paradox. I then examine neurobiological theories that subserve these cognitive models, focusing on the noradrenergic circuitry underlying arousal's distributed influences and the neuromodulatory interactions that tune and sustain neuronal activity.Chapter 2 investigates the attentional boost effect (ABE), in which detecting a goal-relevant target in one task enhances memory for concurrent, task-irrelevant information. Although seemingly at odds with dual-task interference predictions, ABE may offer a clue into the subtle influences of our dynamic attentional system on episodic memory. Using a category-specific design and Signal Detection Theory, we determined that the boost in recognition memory reflects a shift in response criterion rather than an improvement in memory sensitivity. This suggests that the boosted memory representations are more conceptual than perceptual. Moreover, pupil-linked arousal responses predicted worse recognition memory under most conditions, but critically, this relationship was disrupted for trials that were accompanied by a novel target. Together, these results suggest that ABE may arise from a disinhibitory mechanism that biases memory towards gist-based traces. This leads us to propose that Fuzzy Trace Theory may provide a useful complementary framework that extends the explanatory value of existing ABE models.As originally formulated, ABE suggests that attention promotes the binding of peripheral information at event boundaries, or contextual shifts in our episodic experience that demark the end of one event and the start of the next. Using an event segmentation paradigm, participants judged objects while responding to auditory tones that periodically switched ears and pitch, signaling a change in response hand and a new perceptual-goal context. We examined pupil variability, an index of attentional stability, during 5-item windows that spanned across contexts or remained within the same context. We found that lower variability predicted better temporal order memory and stronger item recognition during the same 5-item window, suggesting that attentional stability supported both temporal structure and item encoding. At the neural level, pattern similarity in the object-selective lateral occipital cortex (LOC) predicted recognition for items studied within the same context, but not across boundaries. Mediation analyses indicated that the LOC-recognition link was partially explained by pupil variability, highlighting attentional stability's role in stabilizing perceptual representations thereby supporting successful memory encoding.Chapter 4 explores how naturalistic emotional fluctuations shape the temporal organization of memory. To induce shifts in emotional context, participants viewed sequences of everyday objects while generating narratives and listening to instrumental music composed with three distinct emotional segments. We introduced a novel measure of temporal structure, the Time's Arrow Task (TAT), in which participants placed previously studied items on a timeline to indicate when they believed each had occurred. Participants also provided continuous ratings of valence and arousal in response to the music. At the list level, greater variability in arousal predicted poorer temporal memory organization, as reflected by increased Mean Absolute Displacement (MAD) on the TAT. Local analyses revealed that MAD was significantly higher when comparing 5-item windows that spanned emotional boundaries compared to windows within the same musical context. Transitions across emotional contexts were associated with greater fluctuations in arousal and impaired temporal structure, with boundary-related increases in arousal variability further predicting elevated MAD. Together, these findings highlight the nuanced influence of arousal fluctuations on the temporal structure of episodic memory, emphasizing the critical role of emotional dynamics in shaping how events are temporally organized.In summary, across three empirical studies, this dissertation reveals how the attention-arousal system shapes not only the fidelity of what we remember but also the temporal structure in which memories are organized.
■590 ▼aSchool code: 0031.
■650 4▼aCognitive psychology
■650 4▼aPsychology
■650 4▼aPhysiological psychology
■653 ▼aArousal
■653 ▼aAttention
■653 ▼aFuzzy
■653 ▼aMemory
■653 ▼aNeuroimaging
■653 ▼aPupillometry
■690 ▼a0633
■690 ▼a0621
■690 ▼a0989
■71020▼aUniversity of California, Los Angeles▼bPsychology 0780.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359645▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


