Reference-frames, or coordinate systems, are used to express properties and relationships of objects in the environment. While the use of reference-frames is well understood in physical sciences, how the brain uses reference-frames remains a fundamental question. The goal of this dissertation is to reach a better understanding of reference-frames in human perceptual, motor, and cognitive processing. In the first project, we study reference-frames in perception and develop a model to explain the transition from egocentric (based on the observer) to exocentric (based outside the observer) reference-frames to account for the perception of relative motion. In a second project, we focus on motor behavior, more specifically on goal-directed reaching. We develop a model that explains how egocentric perceptual and motor reference-frames can be coordinated through exocentric reference-frames. Finally, in a third project, we study how the cognitive system can store and recognize objects by using sensorimotor schema that allows mental rotation within an exocentric reference-frame.
","abstract_html":"<p>Reference-frames, or coordinate systems, are used to express properties and relationships of objects in the environment. While the use of reference-frames is well understood in physical sciences, how the brain uses reference-frames remains a fundamental question. The goal of this dissertation is to reach a better understanding of reference-frames in human perceptual, motor, and cognitive processing. In the first project, we study reference-frames in perception and develop a model to explain the transition from egocentric (based on the observer) to exocentric (based outside the observer) reference-frames to account for the perception of relative motion. In a second project, we focus on motor behavior, more specifically on goal-directed reaching. We develop a model that explains how egocentric perceptual and motor reference-frames can be coordinated through exocentric reference-frames. Finally, in a third project, we study how the cognitive system can store and recognize objects by using sensorimotor schema that allows mental rotation within an exocentric reference-frame.</p>","abstract_has_math":false,"creators":["He, Dongcheng"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Haluk Ogmen","Mario Lopez","Mohammad Mahoor","Timothy Sweeny","David Gao"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-03-01T08:00:00Z","date_published":"2023-03-01T08:00:00Z","updated_at":"2026-07-24T02:03:19Z","subjects":["Binocular combination","Canonical theory","Mental rotation","Motion perception","Reference frames","Sensorimotor control","Artificial Intelligence and Robotics","Cognition and Perception","Cognitive Psychology","Computer Sciences","Other Computer Engineering","Psychology","Robotics"],"languages":["en"],"rights":["Copyright is held by the author. User is responsible for all copyright compliance.
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