Nathaniel Daw - Population codes and prediction errors - ViDA 2020
Автор: Virtual Dopamine
Загружено: 2020-05-22
Просмотров: 1227
Nathaniel Daw
Princeton University
Population codes and prediction errors
05-22-2020
Standard theoretical accounts envision that the midbrain dopamine system broadcasts a uniform prediction error signal through diffuse ascending connections to forebrain. However, I review mounting evidence that now clearly demonstrates that the dopamine response is instead heterogeneous from target area to target area and even from neuron to neuron. I present a new model that suggests that this heterogeneity is inherited from, and ultimately may help to shed light on, the population codes for ongoing task events in afferent cortical and striatal areas. This may provide an unexpected window on a core problem for decision and learning models of all sorts, known as the problem of state: how the brain represents the relevant (and ignores the irrelevant) features of a task at each step.
Доступные форматы для скачивания:
Скачать видео mp4
-
Информация по загрузке:
