The classification of gait patterns is an important challenge in movement analysis, as it supports clinical assessment and decision-making by enabling diagnosis and severity stratification. In this talk, I will discuss the potential of Topological Data Analysis (TDA) for gait pattern classification. Unlike conventional approaches that rely on explicit detection of Gait Events (GEs) to compute Spatiotemporal Gait Parameters (SGPs), TDA characterises the global structure of gait signals directly, capturing relationships and patterns in the data without requiring GEs. This is particularly relevant in real-world settings, where GE detection can be diQicult due to heterogeneity in walking conditions and gait patterns, potentially biasing clinically relevant metrics and, consequently, decision-making.
\r\nWithin our department, preliminary results have shown that TDA-based features can achieve classification performance comparable to that of SGPs in fall-risk assessment. These findings suggest that topology oQers a competitive alternative for representing gait data, with the potential to better handle variability across subjects and pathological
\r\nconditions.
\r\nBuilding on these results, we plan to further extend the TDA framework in two directions. First, we aim to investigate time-aware topological methods to better capture the
\r\ntemporal structure of gait signals. Second, we will explore Topological Deep Learning (TDL) approaches to reduce reliance on handcrafted design choices and potentially
\r\nimprove classification performance. By combining the robustness of topology with datadriven representation learning, this work seeks to provide robust tools for the classification of typical and pathological gait patterns.
\r\n
Triple S (Super Sandwich Seminar) will feature 3 speakers per week, each presenting for 15 minutes, followed by a 5 minutes Q&A session.
","image_description":"","creation_date":"2026-02-26T17:14:55","last_modification_date":"2026-02-26T17:16:15","link_label":"","link_url":"","canceled":"False","cancel_reason":"","place_and_room":"SV 1717","url_place_and_room":"https://plan.epfl.ch/?room==SV%201717","url_online_room":"","spoken_languages":["https://memento.epfl.ch/api/v1/spoken_languages/2/?format=json"],"speaker":"Flor Cecilia Navarro Negredo, Radtke Lab; Juliane Da Graca - D'Angelo Lab; free slot","organizer":"Prof. Pierre Gönczy","contact":"Lisa Smith, ISREC Administrative Assistant","is_internal":"True","theme":"","vulgarization":{"id":2,"fr_label":"Public averti","en_label":"Informed public"},"registration":{"id":3,"fr_label":"Entrée libre","en_label":"Free"},"keywords":"Super Sandwich, cancer","file":null,"icalendar_url":"https://memento.epfl.ch/event/export/119911/","category":{"id":1,"code":"CONF","fr_label":"Conférences - Séminaires","en_label":"Conferences - Seminars","activated":true},"academic_calendar_category":null,"domains":[],"mementos":["https://memento.epfl.ch/api/v1/mementos/1/?format=json","https://memento.epfl.ch/api/v1/mementos/6/?format=json","https://memento.epfl.ch/api/v1/mementos/9/?format=json","https://memento.epfl.ch/api/v1/mementos/26/?format=json"]},{"id":71054,"title":"BMI Seminar // Pierre Le Merre: A prefrontal cortex map based on single-neuron activity","slug":"bmi-seminar-pierre-le-merre-a-prefrontal-cortex-ma","event_url":"https://memento.epfl.ch/event/bmi-seminar-pierre-le-merre-a-prefrontal-cortex-ma","visual_url":"https://memento.epfl.ch/image/32510/200x112.jpg","visual_large_url":"https://memento.epfl.ch/image/32510/720x405.jpg","visual_maxsize_url":"https://memento.epfl.ch/image/32510/max-size.jpg","lang":"en","start_date":"2026-04-24","end_date":"2026-04-24","start_time":"09:15:00","end_time":"10:15:00","description":"TBD
","image_description":"","creation_date":"2026-02-05T16:08:19","last_modification_date":"2026-02-16T13:33:14","link_label":"Web Page","link_url":"https://ki.se/en/people/pierre-le-merre","canceled":"False","cancel_reason":"","place_and_room":"SV 2510","url_place_and_room":"","url_online_room":"","spoken_languages":["https://memento.epfl.ch/api/v1/spoken_languages/2/?format=json"],"speaker":"Pierre Le Merre, Lyon Neuroscience Research Centre, University of Lyon | Karolinska Institute, Stockholm","organizer":"BMI - LSENS Host: Carl Petersen","contact":"brain_mind@epfl.ch","is_internal":"False","theme":"","vulgarization":{"id":2,"fr_label":"Public averti","en_label":"Informed public"},"registration":{"id":3,"fr_label":"Entrée libre","en_label":"Free"},"keywords":"","file":null,"icalendar_url":"https://memento.epfl.ch/event/export/119598/","category":{"id":1,"code":"CONF","fr_label":"Conférences - Séminaires","en_label":"Conferences - Seminars","activated":true},"academic_calendar_category":null,"domains":[],"mementos":["https://memento.epfl.ch/api/v1/mementos/1/?format=json","https://memento.epfl.ch/api/v1/mementos/6/?format=json","https://memento.epfl.ch/api/v1/mementos/9/?format=json","https://memento.epfl.ch/api/v1/mementos/19/?format=json","https://memento.epfl.ch/api/v1/mementos/221/?format=json"]},{"id":71450,"title":"Visitors Talk: Mary Helen Immordino-Yang, University of Southern California","slug":"visitors-talk-mary-helen-immordino-yang-university","event_url":"https://memento.epfl.ch/event/visitors-talk-mary-helen-immordino-yang-university","visual_url":"https://memento.epfl.ch/image/32798/200x112.jpg","visual_large_url":"https://memento.epfl.ch/image/32798/720x405.jpg","visual_maxsize_url":"https://memento.epfl.ch/image/32798/max-size.jpg","lang":"en","start_date":"2026-04-24","end_date":"2026-04-24","start_time":"13:00:00","end_time":"14:00:00","description":"Hosted by Solange Denervaud, CIBM Flagship Project Officer, we are pleased to invite you to attend the CIBM Visitors Talk on April 24th at 13:00 CEST by Mary Helen Immordino-Yang from the University of Southern California who will be sharing on “Longitudinal neurodevelopmental correlates of mid-adolescents’ psychosocial processing: A path to young adult wellbeing?”.
\r\n
\r\nAbstract
\r\nCombining open-ended interviews (outside the scanner) with structural, trial-by-trial, and resting-state functional MRI neuroimaging, we examined real-time functional neural dynamics underlying diverse urban mid-adolescents’ cognitive and emotional engagement with compelling social stories at two time-points, two years apart. We found that the patterns of longitudinal change in neural network dynamics predicted psychosocial outcomes five years later in young adulthood.
\r\nWe found that “transcendent thinking” – seeing situations not just in terms of X happened to person A, which makes me feel thusly, but in terms of the larger societal and contextual forces that shaped how Person A was treated and how Person A reacted, the broader implications and lessons one can draw from that situation, and the larger issues it exemplifies or reveals—correlated with a particular set of neural activity dynamics and predicted future structural and functional neural development across the subsequent two years, controlling for the starting state of neural development, and independent of IQ and SES. Transcendent thinking also countered negative effects of exposure to community violence on structural brain development.
\r\nThe neural development predicted by transcendent thinking (the changes in the brain across the 2-year period) in turn predicted young adult identity strength, self-liking, relationship satisfaction, and achievement 5 years later.
\r\nThese findings reveal a novel predictor of neural development across mid-adolescence, and underscore the active role adolescents play in their own brain development through the meaning they make of the social world. Implications for secondary education and pedagogy will be discussed.
\r\n
\r\n
Thesis Director: Prof. A. L. A. Persat,
\r\nBiotechnology and Bioengineering doctoral program
\r\nThesis Nr. 11340
\r\n
\r\nTo take part in the public defense, please contact directly the speaker
Thesis Director: Prof. H. Altug,
\r\nBiotechnology and Bioengineering doctoral program
\r\nThesis Nr. 11156
\r\n
\r\nTo take part in the public defense, please contact directly the speaker
Hosted by Meritxell Bach Cuadra, Head of CIBM Signal Processing CHUV UNIL Trustworthy Medical Image Analysis Section, we are pleased to invite you to attend the 57th CIBM Breakfast & Science Seminar on April 28th at 09:30 CET by Delphine Ribes from EPFL and ECAL LAB who will be sharing on “Beyond Innovation: Design Research Methods for Adoption and Acceptance”.
","image_description":"B&S57","creation_date":"2026-04-15T11:04:30","last_modification_date":"2026-04-15T11:05:18","link_label":"Website of the event","link_url":"https://cibm.ch/event/breakfast-science-seminar-57/","canceled":"False","cancel_reason":"","place_and_room":"CH F1 614","url_place_and_room":"https://plan.epfl.ch/?room==CH%20F1%20614","url_online_room":"https://epfl.zoom.us/meeting/register/d5a9vjlLTUikwYFrjs6R6Q","spoken_languages":["https://memento.epfl.ch/api/v1/spoken_languages/2/?format=json"],"speaker":"Delphine Ribes","organizer":"CIBM Events","contact":"Miguel Molina","is_internal":"False","theme":"","vulgarization":{"id":1,"fr_label":"Tout public","en_label":"General public"},"registration":{"id":3,"fr_label":"Entrée libre","en_label":"Free"},"keywords":"Innovation, Technology, AI","file":null,"icalendar_url":"https://memento.epfl.ch/event/export/120385/","category":{"id":1,"code":"CONF","fr_label":"Conférences - Séminaires","en_label":"Conferences - Seminars","activated":true},"academic_calendar_category":null,"domains":[],"mementos":["https://memento.epfl.ch/api/v1/mementos/5/?format=json","https://memento.epfl.ch/api/v1/mementos/8/?format=json","https://memento.epfl.ch/api/v1/mementos/9/?format=json","https://memento.epfl.ch/api/v1/mementos/284/?format=json"]},{"id":64749,"title":"BRIDGE Discovery: 10th call","slug":"bridge-discovery-10th-call","event_url":"https://memento.epfl.ch/event/bridge-discovery-10th-call","visual_url":"https://memento.epfl.ch/image/26583/200x112.jpg","visual_large_url":"https://memento.epfl.ch/image/26583/720x405.jpg","visual_maxsize_url":"https://memento.epfl.ch/image/26583/max-size.jpg","lang":"en","start_date":"2026-04-28","end_date":"2026-04-28","start_time":null,"end_time":null,"description":"BRIDGE is a joint programme conducted by the Swiss National Science Foundation (SNSF) and Innosuisse, the Swiss Innovation Agency. It offers new funding opportunities at the intersection of basic research and science-based innovation, thereby supplementing the funding activities of the two organizations.
\r\n
\r\nBRIDGE Discovery is aimed at experienced researchers who wish to realise a technological innovation with great social or economic impact. They can submit a proposal on their own or as part of a consortium of up to three applicants. The project must be characterised by scientific excellence and a clear vision of a future application.
\r\n
\r\nBRIDGE Discovery funds projects for up to 4 years. The maximum total costs must not exceed 850,000 Swiss francs per applicant over four years. Grants cover the salaries of project employees and research costs directly linked to the project.
\r\n
\r\nAs of 2025, the letter of intent is no longer a prerequisite for the submission of a Discovery proposal.
\r\n
\r\nApplicants must directly submit a full proposal on mysnf.ch.
\r\n
\r\nDeadline for the submission of full proposals: 28th April 2026 (5pm Swiss time)
\r\n
\r\nFurther details of the schemes, calls and requirements for the BRIDGE funding programme are available on the BRIDGE website.
\r\nMore information:\r\n