Table 1. Mushroom bodies visual long-term memory learning rules.

KC to MBON synapses are updated depending on the KC activity level and a reward signal coming from dopaminergic neuron (DAN), considered on (1) during the learning phase and off (0) otherwise (during the test phase). Only the combination of an active KC with an active DAN induce the reduction of the corresponding KC-MBON synapse weight.

DAN(t)	KCi(t)	${\Delta }_i^{KC-MBON}$(t+1)
0	0	0
0	1	0
1	0	0
1	1	-0.2