Table 1

Errors in performance for various possible interactions between stimulus and context.

Error/Task

fg

f + g

[f + g - 1]₊

sig (f + g)

(σ_CM /Scaling (DE)

0.60

6.3

0.50

0.62

0.66

(σ_CM /Scaling (CE)

0.60

5.5

0.51

0.61

0.69

Bias/Orientation

0.03°

36°

0.05°

0.04°

0.06°

DT/Orientation

1.39°

37°

1.09°

1.44°

1.88°

Functions f and g are the sensory- and context-dependent terms used to generate the GM responses; fg is the standard condition in which these functions are multiplied (Equation 1). Other combinations: f + g, linear interaction (Equation 15); [f + g - 1]₊, rectification (Equation 16); sig(f + g), sigmoidal function (Equation 17); and , power function (Equation 18). Network parameters were as in Figs. 6 and 9a-f, for the corresponding tasks. For each row, all numbers were generated using exactly the same model parameters, except for the specific combination of f and g terms. DE, discontinuous encoding; CE, continuous encoding; DT, discrimination threshold.

Salinas BMC Neuroscience 2004 5:47   doi:10.1186/1471-2202-5-47