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Year:: 2023
Contributor:: Daskalopoulos, Alexander J (creator); Song, Joo-Hyun (thesis advisor); Liddy, Joshua (thesis advisor); Brown University. Neuroscience (sponsor)
Genre:: theses
Subject:: Vision; Attention; Learning

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Abstract:: Visuomotor adaptation is a process engaged in everyday settings because of its critical role in adjusting visually-guided actions, such as reaching. Two processes contribute to visuomotor adaptation: explicit and implicit processes. Previous research indicates that implicit processes operate outside of cognitive control and are largely invariant. There is emerging evidence of a compensatory relationship between implicit and explicit processes, where deficits in one are compensated by the other. Other work examining sequence learning suggests that explicit processes can suppress implicit processes unless they are disengaged. Implicit adaptation can be isolated using clamped visual feedback, but implicit and explicit process interactions may not be completely attenuated. The goal of this study was to determine if implicit adaptation was augmented by further disengaging cognitive processes known to contribute to explicit adaptation–namely attention and working memory–using a dual-task paradigm. Participants performed a visuomotor rotation task with clamped visual feedback to isolate implicit adaptation. Participants were separated into three groups: single-task (ST), dual-task with no feedback (DT-NF), and dual-task with feedback (DT-F). The ST group only performed the visuomotor task while the DT group performed the visuomotor task while also completing an attention-demanding visual task. The DT-F group received performance feedback for the visual task, while the DT-NF group did not. Feedback was manipulated to increase attentional allocation to the visual task. Participants demonstrated implicit adaptation in response to clamped feedback, similar to past work. Implicit adaptation increased in the DT-NF group compared to the ST group, but it was not significant. Greater implicit adaptation was found for the DT-F group early in adaptation. This work provides preliminary evidence of continuing implicit-explicit interactions even when explicit processes are excluded.
Notes:: Senior thesis (ScB)--Brown University, 2023; Concentration: Neuroscience

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Citation

Daskalopoulos, Alexander J., "Can implicit adaptation be augmented by disengaging cognitive processes involved in explicit adaptation?" (2023). Neuroscience Theses and Dissertations. Brown Digital Repository. Brown University Library. https://repository.library.brown.edu/studio/item/bdr:cevtsjsh/

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Neuroscience Theses and Dissertations

Theses and Dissertations for the Neuroscience department.
...

Can implicit adaptation be augmented by disengaging cognitive processes involved in explicit adaptation?