Poster preview
ePoster
THETA POWER AND PHASE MODULATION PREDICT LONG-TERM RETENTION OF EVENT MEMORIES
Marta Silvaand 8 co-authors
University of Chicago
FENS Forum 2026 (2026)
Barcelona, Spain
Board PS06-09PM-476
Presentation
Date TBA
Board: PS06-09PM-476
Event Information
Poster Board
PS06-09PM-476
Poster
View posterAbstract
Ongoing experience is transformed into discrete event memories through event segmentation, in which temporally extended information is bound together into a coherent event representation. Theta-band activity has been repeatedly implicated in memory encoding and temporal organization, particularly in coordinating hippocampal–cortical interactions and aligning neural activity at behaviorally relevant moments. However, how theta dynamics support the segmentation of continuous experience into discrete event memories remains unclear. Using iEEG, we investigated how theta modulations at event boundaries of a 50-min film impact long-term memory for an event. When one event ends and another begins, theta power increases in the hippocampus and frontal cortex, while decreasing in the temporal cortex, and these boundary-related modulations predict whether an event will later be remembered. Event boundaries also trigger phase resets in the hippocampus and temporal cortex; critically, however, only hippocampal phase resets are associated with successful later recall. By revealing systematic theta modulations at movie boundaries, our results provide new insight into how continuous experience is transformed into discrete long-term memory events.
Recommended posters
EPISODIC MEMORY IS RELATED TO MEDIAL TEMPORAL LOBE ACTIVITY ON A FIXATION-BY-FIXATION BASIS: AN IEEG STUDY IN HUMANS
Arantzazu San Agustín, Joel L. Voss, James E. Kragel
A SLOW OSCILLATORY ARCHITECTURE INTEGRATES ONLINE AND OFFLINE MEMORY PROCESSES ACROSS THE HUMAN MEDIAL TEMPORAL LOBE
Adrien Causse, Jonathan Curot, Vítor Lopes-dos-Santos, Raphaël Nunes-da-Silva, Helen Barron, Vincent Dornier, Marie Denuelle, Amaury De Barros, Jean-Christophe Sol, Katia Lehongre, Sara Fernandez-Vidal, Valerio Frazzini, Vincent Navarro, Emmanuel Barbeau, Tim Denison, Leila Reddy, David Dupret
TRACKING EPISODIC AND SCHEMATIC COMPONENTS OF NEURAL REPRESENTATIONS IN MEMORY
Leonard Niekerken, Nikita Sossounov, Yuqi Ying, Sebastian Michelmann
MODULATING AVERSIVE MEMORY FORMATION WITH NON-INVASIVE THETA-BURST TEMPORAL INTERFERENCE STIMULATION
Esther Troya Gállego, Cristina Pagge, Uxía Fernández-Folgueiras, Nir Grossman, Manuela Costa
SCALE-FREE HIPPOCAMPAL NETWORK DYNAMIC IN SLEEP PREDICTS FUTURE RETENTION OF SPATIAL MEMORIES
Predrag Živadinović, Fabrizio Lombardi, Sofia Taveira, Juan Ramirez Villegas, Gašper Tkačik, Jozsef Csicsvari
HIPPOCAMPAL THETA-GAMMA PHASE-AMPLITUDE COUPLING CODES FOR THE DISTANCE TO HIDDEN GOAL LOCATIONS IN HUMAN INTRACRANIAL EEG
Zimo Huang, Paris Goumas, James A Bisby, Beate Diehl, Anna Miserocchi, Andrew W McEvoy, Umesh Vivekananda, Matthew C Walker, Neil Burgess, Daniel Bush