Emergent spatial goals in an integrative model of the insect central complex
Fig 12
Simulations using a “settler” or “nomadic” CX to harvest multiple food sources.
(A) Settler brain The CX model used in this simulation is similar to Fig 5B.c. Both sensory stimulations from the green visual pathway and food discovery are used as reward to the FBt − DAN circuit. The agent is placed at the nest and left to find food located at different location randomly assigned in a quadrant of 90° and at a distance of 100–400 l.u.. When a food source is found, it is fully consumed and disappears. Simultaneously, a memory is formed on the FBthΔ and the motivation is switched to trigger homing behaviour. When the agent reaches the nest, the motivation is switched again to promote further exploration. The simulation is stopped when the agent spends more than 5000 t.u. without finding a new food source or the nest and is considered lost. (B) Nomad brain The CX model used in this simulation is modified to replace any DAN stimulation by a re-zeroing of the hΔ activity, i.e. of the PI. The rest of the simulation is similar to (A). Clipart(s) in the figure have been modified from https://openclipart.org/.