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Poster A6 in Poster Session A - Tuesday, August 6, 2024, 4:15 – 6:15 pm, Johnson Ice Rink
Understanding the influence of uncertainty and noise on spatial decision dynamics
Yirong Xiong1, Vivek Hari Sridhar2,3,4,5; 1Max Planck Institute for Brain Research, 2University of Konstanz, Department of Biology, 3Max Planck Institute of Animal Behavior, Department for the Ecology of Animal Societies, 4University of Konstanz, Centre for the Advanced Study of Collective Behaviour, 5Indian Institute of Science
In decision-making research, the speed-accuracy trade-off (SAT) is a pivotal concept, with prior studies demonstrating its optimization influenced by factors such as the system's internal noise and stimuli reliability (or uncertainty). Extending this understanding from conventional decision-making paradigms to spatial contexts, our study employs a ring attractor model to delve into the impact of external uncertainty and internal noise on the critical dynamics (or bifurcations) that accompany decision-making. Our findings reveal that increased internal noise delays the onset of this bifurcation, biasing decision accuracy over speed. Conversely, signal uncertainty exerts a U-shaped effect on the emergence of this bifurcation—moderate uncertainty accentuates speed, while low and high uncertainties favor accuracy. These insights contribute to our understanding of how SAT operates within spatial decision-making frameworks, particularly in complex environmental settings.
Keywords: Speed accuracy trade-off Decision-making Ring attractor Noise