Figure 5.

Simulated LAL under different conditions of EB manipulation. The three panels illustrate 2.5 s of simulated activity recorded in the LAL, single hemisphere, under different condition of EB manipulation. (A) Under control condition, the heatmap shows differentiated activity in the modules of the LAL, with transient selections due to the gating inhibition performed by the EB. In this example, the simulated insect successfully moves forward, turns left, and moves forward again until it reaches target area 1. (B) Under the condition of EB deactivation, the gating function is diminished leading to general overactivation of several modules in the LAL and loss of differentiation in the signal. In this example, the simulated insect is able to perform the initial motor activity, but it stops when the actions “forward” and “turn right” become both strongly active. (C) Under the condition of EB overactivation, the gating function exerted by EB on LAL is potentiated. In this example, LAL is only able to trigger one action (move “forward”) at the beginning of the simulation, when the visual input is strong enough to overcome the inhibition provided by the EB. As soon as the simulated insect changes its location and the visual input is not accessible, the remaining sensory stimuli are unable to drive any premotor response, leaving the simulated insect motionless.