본문

서브메뉴

The Mechanisms Involved in Distractor Suppression During Attentional Processing.
The Mechanisms Involved in Distractor Suppression During Attentional Processing.

상세정보

자료유형  
 학위논문
Control Number  
0017160997
International Standard Book Number  
9798382629186
Dewey Decimal Classification Number  
153
Main Entry-Personal Name  
Morgan, Hannah Lori.
Publication, Distribution, etc. (Imprint  
[S.l.] : The University of North Carolina at Chapel Hill., 2024
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2024
Physical Description  
145 p.
General Note  
Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
General Note  
Advisor: Hopfinger, Joseph B.
Dissertation Note  
Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2024.
Summary, Etc.  
요약Attention can be directed to certain aspects of our environment through the enhancement of certain features such as size, shape, and color. This enhancement of attention allows us to concentrate on relevant specific stimuli in our visual world. However, it is insufficient to have an attention mechanism that only enhances features; this would imply that one would be constantly captured by every relevant feature in our visual world. Therefore, recent theories suggest that there is an attentional mechanism that suppresses the capture of task-irrelevant but highly salient stimuli in a scene. While attentional capture has been highly studied, the mechanisms of attentional suppression are less clear. Recently, research suggests that people can suppress stimuli that might otherwise capture attention. Behavioral studies have used a capture-probe paradigm and found that when a distractor is present in a display, there are quicker and more accurate reaction times to a target. Additionally, during successful suppression, the PD ERP component (a marker of suppression) is elicited. Finally, research has also found that suppression of a distractor can be learned over multiple blocks. These results have led to a recent theory suggesting that there are three possible mechanisms of suppression, which include first, second, and global-level suppression (Gaspelin & Luck, 2018). However, previous evidence suggests that only first-level suppression is a plausible mechanism of suppression. Only recently has evidence directly suggested that higher levels of suppression, second and global-order, can occur (Ma & Abrams, 2023b). While, overall, previous research has shown that people can suppress stimuli that would otherwise capture visual attention, it is still not clear how the visual system determines which items are to be suppressed. Therefore, this project aimed to explore suppression mechanisms and how they contribute to successful attentional processing. The following series of experiments explored the differences in the suppression levels of distractors, the time course and mechanisms involved in second-level suppression, and if and how distractor suppression is learned. For the first time, these experiments show through both behavioral and neural data that second-level suppression is a potential mechanism for ignoring salient but irrelevant items in the visual world. First, this experiment supports that during second-order suppression, typical behavioral indices of successful suppression are present in both search and probe trials. This study also found that higher levels of suppression are substantially different from one another, with second and global-order suppression effects differing. Global order suppression showed indicators of attentional capture, which contradicts global salience suppression models. This distinction between higher levels of suppression has not yet been seen in the literature. This study also paired the second-order suppression task with EEG for the first time and found a PD component during the color singleton present trials, providing novel evidence that supports second-order suppression models. Finally, this study found that the ability to suppress second-level features is immediate and remains when rejecting novel distractors. This suggests that second-level shows significant suppression benefit effects immediately and throughout the blocks, whereas first-level suppression does not. Overall, these three experiments provide novel support for the second-order salience suppression model and are a first step to resolving debates surrounding the three models of attentional suppression.
Subject Added Entry-Topical Term  
Cognitive psychology.
Subject Added Entry-Topical Term  
Neurosciences.
Subject Added Entry-Topical Term  
Clinical psychology.
Index Term-Uncontrolled  
Attention
Index Term-Uncontrolled  
Event-related potential
Index Term-Uncontrolled  
Distractor positivity
Index Term-Uncontrolled  
Suppression
Index Term-Uncontrolled  
Electroencephalography
Added Entry-Corporate Name  
The University of North Carolina at Chapel Hill Psychology
Host Item Entry  
Dissertations Abstracts International. 85-11B.
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:656160

MARC

 008250224s2024        us  ||||||||||||||c||eng  d
■001000017160997
■00520250211151147
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798382629186
■035    ▼a(MiAaPQ)AAI31235113
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a153
■1001  ▼aMorgan,  Hannah  Lori.
■24510▼aThe  Mechanisms  Involved  in  Distractor  Suppression  During  Attentional  Processing.
■260    ▼a[S.l.]▼bThe  University  of  North  Carolina  at  Chapel  Hill.  ▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a145  p.
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-11,  Section:  B.
■500    ▼aAdvisor:  Hopfinger,  Joseph  B.
■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2024.
■520    ▼aAttention  can  be  directed  to  certain  aspects  of  our  environment  through  the  enhancement  of  certain  features  such  as  size,  shape,  and  color.  This  enhancement  of  attention  allows  us  to  concentrate  on  relevant  specific  stimuli  in  our  visual  world.  However,  it  is  insufficient  to  have  an  attention  mechanism  that  only  enhances  features;  this  would  imply  that  one  would  be  constantly  captured  by  every  relevant  feature  in  our  visual  world.  Therefore,  recent  theories  suggest  that  there  is  an  attentional  mechanism  that  suppresses  the  capture  of  task-irrelevant  but  highly  salient  stimuli  in  a  scene.  While  attentional  capture  has  been  highly  studied,  the  mechanisms  of  attentional  suppression  are  less  clear.  Recently,  research  suggests  that  people  can  suppress  stimuli  that  might  otherwise  capture  attention.  Behavioral  studies  have  used  a  capture-probe  paradigm  and  found  that  when  a  distractor  is  present  in  a  display,  there  are  quicker  and  more  accurate  reaction  times  to  a  target.  Additionally,  during  successful  suppression,  the  PD  ERP  component  (a  marker  of  suppression)  is  elicited.  Finally,  research  has  also  found  that  suppression  of  a  distractor  can  be  learned  over  multiple  blocks.  These  results  have  led  to  a  recent  theory  suggesting  that  there  are  three  possible  mechanisms  of  suppression,  which  include  first,  second,  and  global-level  suppression  (Gaspelin  &  Luck,  2018).  However,  previous  evidence  suggests  that  only  first-level  suppression  is  a  plausible  mechanism  of  suppression.  Only  recently  has  evidence  directly  suggested  that  higher  levels  of  suppression,  second  and  global-order,  can  occur  (Ma  &  Abrams,  2023b).  While,  overall,  previous  research  has  shown  that  people  can  suppress  stimuli  that  would  otherwise  capture  visual  attention,  it  is  still  not  clear  how  the  visual  system  determines  which  items  are  to  be  suppressed.  Therefore,  this  project  aimed  to  explore  suppression  mechanisms  and  how  they  contribute  to  successful  attentional  processing.  The  following  series  of  experiments  explored  the  differences  in  the  suppression  levels  of  distractors,  the  time  course  and  mechanisms  involved  in  second-level  suppression,  and  if  and  how  distractor  suppression  is  learned.  For  the  first  time,  these  experiments  show  through  both  behavioral  and  neural  data  that  second-level  suppression  is  a  potential  mechanism  for  ignoring  salient  but  irrelevant  items  in  the  visual  world.  First,  this  experiment  supports  that  during  second-order  suppression,  typical  behavioral  indices  of  successful  suppression  are  present  in  both  search  and  probe  trials.  This  study  also  found  that  higher  levels  of  suppression  are  substantially  different  from  one  another,  with  second  and  global-order  suppression  effects  differing.  Global  order  suppression  showed  indicators  of  attentional  capture,  which  contradicts  global  salience  suppression  models.  This  distinction  between  higher  levels  of  suppression  has  not  yet  been  seen  in  the  literature.  This  study  also  paired  the  second-order  suppression  task  with  EEG  for  the  first  time  and  found  a  PD  component  during  the  color  singleton  present  trials,  providing  novel  evidence  that  supports  second-order  suppression  models.  Finally,  this  study  found  that  the  ability  to  suppress  second-level  features  is  immediate  and  remains  when  rejecting  novel  distractors.  This  suggests  that  second-level  shows  significant  suppression  benefit  effects  immediately  and  throughout  the  blocks,  whereas  first-level  suppression  does  not.  Overall,  these  three  experiments  provide  novel  support  for  the  second-order  salience  suppression  model  and  are  a  first  step  to  resolving  debates  surrounding  the  three  models  of  attentional  suppression.
■590    ▼aSchool  code:  0153.
■650  4▼aCognitive  psychology.
■650  4▼aNeurosciences.
■650  4▼aClinical  psychology.
■653    ▼aAttention
■653    ▼aEvent-related  potential
■653    ▼aDistractor  positivity
■653    ▼aSuppression
■653    ▼aElectroencephalography
■690    ▼a0633
■690    ▼a0317
■690    ▼a0622
■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bPsychology.
■7730  ▼tDissertations  Abstracts  International▼g85-11B.
■790    ▼a0153
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160997▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    New Books MORE
    Related books MORE
    최근 3년간 통계입니다.

    Buch Status

    • Reservierung
    • 캠퍼스간 도서대출
    • 서가에 없는 책 신고
    • Meine Mappe
    Sammlungen
    Registrierungsnummer callnumber Standort Verkehr Status Verkehr Info
    TQ0032282 T   원문자료 열람가능/출력가능 열람가능/출력가능
    마이폴더 부재도서신고

    * Kredite nur für Ihre Daten gebucht werden. Wenn Sie buchen möchten Reservierungen, klicken Sie auf den Button.

    해당 도서를 다른 이용자가 함께 대출한 도서

    Related books

    Related Popular Books

    도서위치