Fig. 4: Generative modelling of anisotropic neural tuning properties.
From: Neural tuning instantiates prior expectations in the human visual system
a Neural response functions for a population of orientation tuned neurons. Neurons may have even tuning properties across all orientations (even tuning), but theoretical work suggests that the anisotropies in orientation perception are either explained by denser clustering (uneven tuning preference) or narrower tuning (uneven tuning width) of neurons around cardinal orientations. Horizontally distributed black dots indicate tuning preferences. b Illustration of the generative modelling procedure used to simulate neural data to test hypotheses of cardinal biases. A bank of orientation tuned neurons are connected to EEG sensors via random weights. We simulate EEG activity in response to multiple oriented gratings and then decode the orientation using inverted encoding. From the decoded orientations we calculate accuracy, precision, and bias parameters.
