Physiological-Neural Interactions During Memory Retrieval, a Cognitive Science Speaker Series Presentation
Speaker: Marco Pinto-Orellana, Ph.D.
Title: Physiological-Neural Interactions During Memory Retrieval
Short Bio: Dr. Marco Pinto-Orellana is an assistant professor in the department of neuroscience at RIT. His research focuses on developing computational models to model brain dynamics and biomarkers from electroencephalographic (EEG) and functional near-infrared spectroscopy (fNIRS) signals. He earned his PhD in Engineering from the Oslo Metropolitan University, on time-spectral modeling of brain signals. He also pursued postdoctoral research on pediatric epilepsy models at the University of California, Irvine, in the computational and translational neuroscience laboratory. Dr. Pinto-Orellana also holds an MS in Computer Science from the Federal University of Viçosa and a BS in Telecommunications Engineering from the Bolivian Catholic University.
Abstract: Visual memory retrieval involves a cognitive process that can interact with other physiological processes such as respiration and cardiac activity. In this talk, we examine how physiological and neural signals interact at a network level during memory encoding and retrieval with a functional near-infrared spectroscopy (fNIRS) dataset. We studied 16 healthy adults during a visual memory task with four conditions: intentional or unintended recall, both in successful and failed recalls. We developed a method that allows us to differentiate neuronal, respiratory, and cardiac contributions to brain connectivity under the assumption that a latent amplitude-modulation effect may be present between them. Our preliminary results suggest higher neuronal-only connectivity during failed memory recall, while respiratory patterns in the frontal region have a potential role as regulators of brain networks estimated through fNIRS.
ASL-English interpreters have been requested. Light refreshments will be provided.
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