Multiple bumps can enhance robustness to noise in continuous attractor networks
Fig 5
Bump diffusion due to input and spiking noise.
(A, B) Networks with synaptic input noise of magnitude σ = 0.5 and drive b = 0.5. Dotted gray lines indicate Eq 10. (A) Diffusion decreases with bump number under linear mapping and remains largely constant under circular mapping. Networks with 600 neurons. (B) Diffusion increases with network size under linear mapping and decreases under circular mapping. Networks with 3 bumps. (C and D) Same as A and B, but for networks with Poisson spiking noise instead of input noise. Dotted gray lines indicate Eq 20. Points indicate data from 48 replicate simulations and bars indicate bootstrapped standard deviations.