NEURAL NETWORK MECHANISMS UNDERLYING POST-DECISION BIASES
Miguel Donderis, Jose M. Esnaola-Acebes, Bharath Chandra Talluri, Tobias H. Donner, Alex Roxin, Klaus Wimmer · IBRO Neuroscience Reports · 2023
Perception is influenced by past choices. In combined discrimination-estimation experiments a categorical choice leads to two biases: (i) a choice-dependent confirmation bias in the continuous estimate of the stimulus average, and (ii) an overall decrease in the sensitivity to subsequent sensory evidence. It remains unknown what neural mechanisms give rise to these post-decision biases and whether continuous estimates and categorical choices are computed in a common cortical circuit. Here, we develop a neural network model that addresses these questions.