List of kernel parameters.

WG is the impulse-response function of ganglion cells, KRG and KRIG are the excitatory and inhibitory feedforward kernels, respectively. and are ON-ON excitatory and inhibitory thalamo-cortico-thalamic kernels, respectively. denotes the mixed ON-ON feedback kernel, consisting of an excitatory and an inhibitory term. The subscript ‘RIG’ refers to the indirect inhibitory input from retinal ganglion cells onto relay cells via intrageniculate interneurons (ganglion → interneuron → relay), while the subscript ‘RCR’ refers to the complete thalamo-cortico-thalamic loop (relay → cortex → relay). F represents the DOG function, f represents the Gaussian function, H represents the biphasic temporal function, and h represents the delayed decaying exponential function. The width parameters in spatial functions are given in units of degree, while the temporal parameters are in units of ms. In the present example applications we have kept the time constant τ fixed at 5 ms (comparable to what, e.g., was found in [74]), while the temporal delay parameters Δ have been varied in a range of 5–30 ms. † denotes the default values for parameters that have been varied.