Behavioral and neural investigations of value-directed strategic processing

Nguyen, Lydia Thi

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https://hdl.handle.net/2142/108582 Copy

Description

Title

Behavioral and neural investigations of value-directed strategic processing

Author(s)

Nguyen, Lydia Thi

Issue Date

2020-07-13

Director of Research (if dissertation) or Advisor (if thesis)

Mudar, Raksha A

Doctoral Committee Chair(s)

Mudar, Raksha A

Committee Member(s)

• Husain, Fatima
• Llano, Daniel A
• Sadaghiani, Sepideh

Department of Study

Neuroscience Program

Discipline

Neuroscience

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

• value-directed strategic processing
• attention
• inhibition
• aging
• older adults
• mild cognitive impairment

Abstract

To effectively and efficiently process the vast amount of information we experience every day, we often selectively attend to information of higher value or importance and inhibit less valuable information, referred to as value-directed strategic processing in this dissertation. In daily life, we often ascribe value to information based on perceptual or conceptual features, but few, if any, studies have directly examined how such features affect value-directed strategic processing. Additionally, although there is emerging work on the structural and functional bases of value-directed strategic processing, no studies have examined the underlying neurophysiological mechanisms which could provide insights into how value-directed strategic processing neurally unfolds. This dissertation investigates the behavioral and neural effects of perceptually and conceptually defined value on value-directed strategic processing in cognitively normal younger and older adults, and older adults with mild cognitive impairment. Chapter 1 reviews historical perspectives and paradigms related to selective attention and behavioral and neuroimaging literature related to value-directed strategic processing. Chapter 2 explores the feasibility of using perceptually defined value for prompting value-directed strategic processing, and whether event-related spectral perturbations (ERSPs) can capture the underlying neurophysiological mechanisms of value-directed strategic processing. Chapter 3 examines whether behavioral and ERSP measures linked to value-directed strategic processing are affected by normal cognitive aging. Chapter 4 investigates whether neurological disorder, specifically mild cognitive impairment, results in behavioral and ERSP alterations related to value-directed strategic processing. Chapter 5 assesses whether defining value based on perceptual versus conceptual features has differential behavioral effects on value-directed strategic processing.

Graduation Semester

2020-08

Type of Resource

Thesis

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http://hdl.handle.net/2142/108582

Copyright and License Information

Copyright 2020 Lydia Nguyen

Owning Collections