BEACON Seminar: Neural Replay Mechanisms Associated With Planning And Memory In Humans
Theories of neural replay propose that it supports a range of functions, most prominently planning and memory consolidation. Here, we test whether distinct signatures of replay in the same task are related to planning and memory preservation. We adapted a reward learning task wherein participants utilized structure knowledge for model-based evaluation, while at the same time had to maintain knowledge of two independent and randomly alternating task environments. We found that before choice, prospective replay strength was enhanced for the current task-relevant environment when a model-based planning strategy was beneficial. Following reward receipt, and consistent with a memory preservation role, replay for the alternative distal task environment was enhanced as a function of decreasing recency of experience with that environment. Our results provide support for key theoretical proposals regarding the functional role of replay and demonstrate that the relative strength of planning and memory-related signals are modulated by ongoing computational and task demands.
Date: 6 June 2023, 13:00 (Tuesday, 7th week, Trinity 2023)
Venue: New Radcliffe House, Walton Street OX2 6NW
Venue Details: Seminar Room, New Radcliffe House (2nd Floor), Department of Experimental Psychology, Woodstock Road, Oxford OX2 6GG
Speaker: Dr Elliott Wimmer (The Max Planck UCL Centre for Computational Psychiatry and Ageing Research)
Organising department: Department of Experimental Psychology
Organisers: Nima Khalighinejad (University of Oxford), Lauren Burgeno (University of Oxford)
Host: Dr Marco Wittmann (University of Oxford)
Part of: Behavioural and Cognitive Neuroscience (BEACON)
Booking required?: Not required
Audience: Members of the University only
Editor: Regula Dent