Colonies of ants can act a lot like neural networks, new research has revealed, with groups of the insects weighing up both external inputs and internal principles when making decisions about what to do as a collective.
In this particular study, the team behind it looked at when and how ant colonies evacuated their nests when the temperature gets too high. At some point a decision was calculated by the collective, concluding the nest should be abandoned.
"We pioneered an approach to understand the ant colony as a cognitive-like system that perceives inputs and then translates them into behavioral outputs," "This is one of the first steps toward really understanding how insect societies engage in collective computation." It's thought excitatory and inhibitory factors are likely to be in contest among the ants, much as in a neural network. Through mathematical modeling, the team was able to show how the ants' collective sensory response threshold was based on the balance between these two factors – not just the individual preferences of each ant averaged out."Rather, it's an emergent property that changes depending on the group size.
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