Relative Representations for Model-to-Brain Mappings

Relative_Reps Relative Representations are a method for mapping points (such as the green circle) from a high dimensional space (left) to a lower dimensional space (right), by represeniting it in a new coordinate system relative to a select set of anchor points (red and blue star). In this work we apply such an idea of relative representations to model-brain mappings and show that it improves interpretability and computational efficiency – surprisingly model-brain RSA scores are roughly consistent even with as few as 10 randomly selected anchor points (10 dimensions) compared to the original 1000’s of dimensions.

Traveling Waves Encode the Recent Past and Enhance Sequence Learning

WaveField Illustration of three input signals (top) and a corresponding wave-field with induced traveling waves (bottom). From an instantaneous snapshot of the wave-field at each timestep we are able decode both the time of onset and input channel of each input spike. Furthermore, subsequent spikes in the same channel do not overwrite one-another.

Pagination