Skip to main content
. 2019 May 13;8:e44324. doi: 10.7554/eLife.44324
Symbol Definition Value Symbol Definition Value
N Total number of neurons 4096 (64 × 64) nmax Max number of active neurons at a timestep 10
NX Number of neurons in each row of environment 64 λxy Connectivity length scale 0.25 m
NY Number of neurons in each column of environment 64 λθ Connectivity orientation-length scale π/7 radians
Nθ Number of equally spaced orientations 8 σX, σY LTP-IE length scales 0.2 m
vth Spike threshold 11 σθ LTP-IE orientation-length scale π/16 radians
iG Gate input 5 β LTP-IE sigmoid steepness 20
τr Refractory period six timesteps T Number of timesteps in simulation 50 timesteps