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X-WR-CALDESC:Events for Brain
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DTSTART;TZID=America/Los_Angeles:20241105T110000
DTEND;TZID=America/Los_Angeles:20241105T120000
DTSTAMP:20260502T213739
CREATED:20240924T165621Z
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UID:10000583-1730804400-1730808000@brain.uci.edu
SUMMARY:Jeffrey Krichmar\, Ph.D.
DESCRIPTION:Join the Center for the Neurobiology of Learning and Memory (CNLM) for a hybrid event featuring Dr. Jeffrey Krichmar\, Professor of Cognitive Sciences at the University of California\, Irvine. \nThis event will be held in-person in the Herklotz Conference Center and virtually via Zoom. \n \nBiologically inspired robot navigation \nWe take inspiration from recent neurophysiological findings to create a flexible navigation system for mobile robots.  In the first part of my talk\, I will present a neuromorphic path planning algorithm inspired by place cell behavior and experience-dependent plasticity. Our navigation system utilizes a spiking neural network wavefront planner and E-prop learning to concurrently map and plan paths in large\, complex environments. We incorporate a novel method for mapping which\, when combined with the spiking wavefront planner\, allows for adaptive planning by selectively considering combining costs. The learning is continuous and does not require retraining due to changes in the environment. The system is tested on a mobile robot platform in an outdoor environment with obstacles and varying terrain.  On real and simulated paths\, our system outperforms state-of-the-art robot path planners. The spiking wavefront planner is compatible with neuromorphic hardware and could be used for applications requiring low size weight and power. In the second part of my talk\, I will discuss how we seamlessly move between global perspectives and first-person perspectives and why this is important for navigation\, memory formation\, and other cognitive tasks. To understand how a neural system might carry out these computations\, we used variational autoencoders (VAEs) to reconstruct first-person perspectives from global map perspectives\, and vice versa. Many latent variables in our model had similar responses to those seen in neuron recordings\, including place cells\, head direction tuning\, and encoding distance to objects. These results could advance our understanding of how brain regions support viewpoint linkages and transformations. Currently\, we are combining these two modeling approaches into a unified biologically inspired navigation system that can handle dynamic environments.
URL:https://brain.uci.edu/event/jeffrey-krichmar-ph-d/
LOCATION:Hybrid Event (This event will be held virtually via Zoom and In-Person in the Herkltoz Conference Room)\, 300 Qureshey Research Lab Irvine\, Irvine\, CA\, 92697\, United States
CATEGORIES:Faculty,Scientific,Staff,Students,Students, Faculty, Staff Only
ATTACH;FMTTYPE=image/png:https://brain.uci.edu/wp-content/uploads/sites/49/2024/09/Jeffrey-Krichmar-Ph.D.png
ORGANIZER;CN="UCI Center for the Neurobiology of Learning and Memory":MAILTO:memory@uci.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20241112T110000
DTEND;TZID=America/Los_Angeles:20241112T120000
DTSTAMP:20260502T213739
CREATED:20240924T171223Z
LAST-MODIFIED:20241009T174711Z
UID:10000584-1731409200-1731412800@brain.uci.edu
SUMMARY:J. Zoe Klemfuss\, Ph.D.
DESCRIPTION:  \n \nJoin the Center for the Neurobiology of Learning and Memory (CNLM) for a hybrid event featuring Dr. J. Zoe Klemfuss\, Associate Professor of Psychological Sciences at the University of California\, Irvine. \nThis event will be held in-person in the Herklotz Conference Center and virtually via Zoom. \n \nChildren’s memory reports in legal contexts \nMillions of US children are centrally involved in legal investigations each year. They may be questioned as suspected victims or witnesses or in other impactful legal proceedings like custody determinations. As one chilling example\, over 3 million children are the subjects of child protective services disposition due to suspected maltreatment annually. In some of the most heinous crimes against children such as child sexual abuse\, children’s statements may be the only available evidence. These crimes rarely have other witnesses and because disclosure is routinely delayed\, physical evidence is rare as well. My colleagues and I have been examining ways we can help children to give accurate and detailed memory reports of their legally-relevant experiences. In this talk\, I will focus on how we’ve been considering child\, interviewer\, and contextual factors as we examine 1) children’s reports of event time and sequence and 2) interviewer-child rapport and support\, and their implications for children’s legal statements.
URL:https://brain.uci.edu/event/j-zoe-klemfuss-ph-d/
LOCATION:Hybrid Event (This event will be held virtually via Zoom and In-Person in the Herkltoz Conference Room)\, 300 Qureshey Research Lab Irvine\, Irvine\, CA\, 92697\, United States
CATEGORIES:Faculty,Scientific,Staff,Students,Students, Faculty, Staff Only
ATTACH;FMTTYPE=image/png:https://brain.uci.edu/wp-content/uploads/sites/49/2024/09/Jeffrey-Krichmar-Ph.D.-1.png
ORGANIZER;CN="UCI Center for the Neurobiology of Learning and Memory":MAILTO:memory@uci.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20241119T110000
DTEND;TZID=America/Los_Angeles:20241119T120000
DTSTAMP:20260502T213739
CREATED:20240925T223533Z
LAST-MODIFIED:20240925T223718Z
UID:10000593-1732014000-1732017600@brain.uci.edu
SUMMARY:Katalin Gothard\, MD\, Ph.D.
DESCRIPTION:The James L. McGaugh Distinguished Seminar will host guest speaker Dr. Katalin Gothard\, Professor of Physiology\, Neurology\, and Neuroscience\, from The University of Arizona \n“A context-dependent switch from sensing to feeling in the primate amygdala” \nTactile signals elicited in the periphery by social and affective touch acquire emotional significance in the brain. As the amygdala processes the valence of all sensory stimuli\, we predicted that the positive valence of grooming would strongly activate the monkey amygdala. To test this hypothesis\, we compared neural activity in the amygdala and the primary somatosensory cortex in response to social grooming and gentle airflow delivered to the same areas of the skin. Neurons in the somatosensory cortex responded to both types of tactile stimuli. In the amygdala\, however\, neurons did not respond to individual grooming sweeps even though grooming elicited autonomic states indicative of positive affect. Instead of responses to individual touch stimuli\, a large proportion of neurons showed enhanced or suppressed baseline firing rates that persisted throughout a grooming bout. These changes were attributed to social context because the presence of the groomer alone could account for increases or decreases in baseline firing rates. It appears\, therefore\, that during grooming\, the amygdala stops responding to external inputs on a short time scale but remains responsive to social context\, and the associated affective states\, on longer time scales. \n 
URL:https://brain.uci.edu/event/katalin-gothard-md-ph-d/
LOCATION:CNLM Herklotz Conference Center\, Irvine\, CA\, 92697\, United States
CATEGORIES:Faculty,Scientific,Staff,Students,Students, Faculty, Staff Only
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20241119T140000
DTEND;TZID=America/Los_Angeles:20241119T153000
DTSTAMP:20260502T213739
CREATED:20241104T223119Z
LAST-MODIFIED:20241105T234808Z
UID:10000626-1732024800-1732030200@brain.uci.edu
SUMMARY:James Antony\, PhD
DESCRIPTION:The UC Irvine Department of Neurobiology and Behavior will host guest speaker Dr. James Antony\, Assistant Professor at California Polytechnic State University. \nMaking memories last: Factors that promote memory persistence \nHow do memories persist? In this talk\, I will investigate various factors that promote long-term memory. First\, I will show how moment-to-moment predictions made during perception – and errors in those predictions (surprises) – affect memory in laboratory and real-world settings. I have found that surprise affects neural responses and enhances memory for events that unfold on a variety of timescales\, from short (seconds) to long (hours to months). Second\, I will discuss how error within a computational model of the hippocampus can be used to explain the well-known benefits of distributing learning over time. And finally\, I will demonstrate how relationships among stimuli at encoding allow one to create well-fortified\, integrated memories that last. Cumulatively\, these findings significantly contribute to understanding memory persistence\, and they could aid in developing methods for improving learning in educational settings and in populations suffering from memory deficits.
URL:https://brain.uci.edu/event/james-antony-phd/
LOCATION:CNLM Herklotz Conference Center and Virtually via Zoom
CATEGORIES:Scientific,Staff,Students,Students, Faculty, Staff Only
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