Working memory capacity: concurrent subtasks need not interfere

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buir.advisorFarooqui, Ausaf Ahmed
dc.contributor.authorŞengil, Gülsüm Özge
dc.date.accessioned2022-12-14T11:14:19Z
dc.date.available2022-12-14T11:14:19Z
dc.date.copyright2022-10
dc.date.issued2022-10
dc.date.submitted2022-11-25
dc.departmentInterdisciplinary Program in Neuroscience (NEUROSCIENCE)en_US
dc.descriptionCataloged from PDF version of article.en_US
dc.descriptionThesis (Master's): Bilkent University, Graduate Program in Neuroscience, İhsan Doğramacı Bilkent University, 2022.en_US
dc.descriptionIncludes bibliographical references (leaves 148-164).en_US
dc.description.abstractAny extended task episode is subsumed by goal-directed programs that hierar- chically control its execution. We investigated the relationship between working memory capacity and the control instantiated by such hierarchical task entities across four experiments. In a new extended task consisting of subtask A and subtask B, participants first memorized the orientation of subtask A lines (let’s call this event mA), then memorized subtask B lines (mB), then recalled these B lines (rB), and finally recalled A lines (rA). The task structure was: mA-mB-rB- rA. Subtask A lines were thus held in mind during the execution of subtask B. Even though participants had to remember the orientation of lines in both cases, increased WM load of lines A only affected performance on subtask A and did not affect the performance on subtask B. In Experiment 2, four trials of Exp1 were organized into a complex 4-part task with the added condition that A lines of a part be recalled not in that part but in the next part. The task structure was: mA1-mB1-rB1—mA2-mB2-rB2-rA1—mA3-mB3-rB3-rA2—mB3-rB3-rA3. Load of A lines again did not affect B lines. Crucially, load of A2 and A3 lines did not affect the recall of A1 and A2 lines, respectively. In Experiment 3, in a design similar to Exp1, time constraint on mA and mB increased the interference across concurrent subtasks. Experiment 4 showed that increasing the similarity between subtask A and subtask B of Exp1 may increase the across-subtask in terference. We show that WM information of different concurrent subtasks can be maintained separately, perhaps as part of their goal-directed programs. And, encoding to these non-interfering stores, as well as retrieval from them, might depend on attentional and time-based mechanisms.en_US
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityby Gülsüm Özge Şengilen_US
dc.embargo.release2023-05-15
dc.format.extentxx, 164 leaves : illustrations ; 30 cm.en_US
dc.identifier.itemidB161576
dc.identifier.urihttp://hdl.handle.net/11693/111064
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectWorking memoryen_US
dc.subjectWorking memory capacityen_US
dc.subjectConcurrent tasksen_US
dc.subjectTask-related programsen_US
dc.subjectLoad-effecten_US
dc.subjectInterferenceen_US
dc.subjectHierarchical controlen_US
dc.subjectAttentional controlen_US
dc.subjectVisual working memoryen_US
dc.titleWorking memory capacity: concurrent subtasks need not interfereen_US
dc.title.alternativeÇalışma belleği kapasitesi: eş zamanlı görevler birbirine ket vurmak zorunda değilen_US
dc.typeThesisen_US
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