Figure 4.

Synaptic weight changes for different input signals. (A) Weight changes for constant inputs (I₁ = 1 and I₂ = −1). While the input is active (i.e., here left input), the corresponding synaptic weights (i.e., here b₁ and c₁) increase and start to converge to certain values. Note, this value does not depend on the initial conditions (Tetzlaff et al., 2011). (B) Weight changes for changing inputs (I_{1, 2}) from a simulated environment. Synaptic weights increase quite fast when the input is strong enough to trigger the reflex signal. Afterwards, if no input is present, the synaptic weights start to decay slowly.