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Dr Jonathan Cannon from Department of Brain and Cognitive Science, Massachusetts Institute of Technology, Boston will give a talk about perceptual entrainment.
02.11.2021 |
| Dato | fre 03 dec |
| Tid | 15:00 — 16:00 |
| Sted | Thalamus, Center for Music in the Brain, Universitetsbyen 3, Aarhus |
TITLE:
Perceptual Entrainment in the Bayesian Brain
ABSTRACT:
Humans easily perceive, track, and entrain movement to periodic structures underlying complex auditory rhythms. This process has been repeatedly modeled from a dynamical systems perspective, but these models are tailored to rhythm perception tasks and therefore provide little insight into how rhythm perception might be conceptually related to other perceptual, cognitive, and motor processes.
I argue that rhythm perception can be viewed as dynamic inference of a hidden state (rhythm phase, and optionally tempo and meter) based on sensory observations (auditory events) and a model of the probability of an auditory event given the hidden state. This approach allows us to plug into the unifying theory of predictive processing and the Bayesian brain, and to rigorously define useful conceptual tools like “surprisal."
When this inference problem is stated formally, solved, and simulated, it mimics human rhythm perception, both at a gross level and in various experimentally identified nuances and illusions. As a model of rhythm perception, it is unique in tracking not only stimulus phase and tempo but also phase and tempo uncertainty. It is also unique in predicting from first principles how unfulfilled expectations should warp the perceived passage of time.
ZOOM LINK:
https://aarhusuniversity.zoom.us/j/68973292220
Meeting ID: 689 7329 2220
BIO: