However, the most interesting results in the current work concern the role of sensory feedback in modulating the output of central pattern generators.
The output of each pattern neuron is computed as (4) P j = exp (− d j (P ) 2 σ 2 ), where σ is a smoothing parameter corresponding to the standard deviation of the Gaussian distribution.
To show whether behavioral phenotypes of robo mutants arise from a defective output of the central pattern generators (CPGs) for exploration, independent of sensory input, I performed calcium imaging experiments on the isolated nervous system.
Indeed neural network models have often favored the idea that memories are stored as discrete local attractors (Hopfield, 1982; Rolls and Treves, 1994), with partial or ambiguous inputs (50% morphs) abruptly inducing the network to occupy one state (e.g., relating to 100% A) or the other (e.g., relating to 100% B) through "global" pattern completion (i.e., output of entire stored pattern).
The output of a network is determined by the patterns of interconnecting links, and weights on these links, that affect output from one node to another (Rumelhart and McClelland 1986).
The majority of such genes display a biased pattern whereby the output of a single homoeolocus dominates total gene expression.
Proper Bcd dosage is an essential input for the proper output of Eve patterning during cycle 14 [3].
Figure 5 illustrates how the output of the Patterns extension is created using partial data generated from a ChemChains experiment on a large-scale model used in our recent paper [ 14].
When the weights match the responses, the output of the pattern-sensitive neuron is strongest.
where y k ( p ) and t k ( p ) denote the network outputs and target responses, respectively, of each output node k given a pattern p, and w is a vector containing all the weights and biases of the network.
