Implement SCM's word layer. Has three inputs: net_input, for inputs subject to normalization and “power law” transformation, “frequency_bias” for the biasing input of frequency, and “inhibitory” for inhibitory inputs not subject to normalization/“power law”. Two connections are needed from a standard spatial layer if the standard separation into facilitation (shunted) and inhibition (not shunted) is desired.

net_input is divided by (length+2) and subject to a power law with power, multiplied by inweight and then the inhibitory input added. Then shunting applies. If decay_delay has passed since the last reset event, then decay is applied to units whose activity is less than cutoff.

parameter	default_value
decay		0
decay_delay	0
rate		1
cutoff		1
power		1
inweight	1
max_act		0
min_act		1