Improving the validity of neuroimaging decoding tests of invariant and configural neural representation
Fig 12
Model used in our simulations.
A: Population encoding model, consisting of a set of channels that are tuned to specific stimulus values along a given dimension (e.g., maleness). When a stimulus with a particular value on the maleness dimension is presented, the channels respond according to their stimulus preferences. The channel responses are then perturbed by random channel noise. The final output represents a vector of noisy firing rates in response to a particular stimulus. B: Linear measurement model. The measurement model provides a link between neural encoding channels and voxel-wise activity measures. Activity in each voxel (represented by cubes) is a linear combination of neural channel responses. This figure includes public domain clipart and all other parts are original: https://creazilla.com/nodes/29498-white-dice-with-black-spots-clipart.