Kenyon · male CNS connectome · Janelia + Google Research

The fly is the art director

2,045 measured Kenyon cells, a measured feedback loop and 17,985 measured synapses. It was shown one web page and taught to like it. Everything on the screen below is what it picked, out of pages it had never seen.

Kenyon cells —

avoid0.000approach

approach twin generation 00 / 15

gen 00

What the fly thinks of this page

+0.000approach − avoid

Its preference for the best candidate, generation by generation. Zero is what a page it has no opinion about scores.

The two brains, after the lesson

Synaptic efficacy of the approach twin — taught to like · — depressed

Synaptic efficacy of the avoid twin — taught to avoid · — depressed

2,045 × 49 synapses, blocked down the long side. Lit means the lesson weakened a synapse there; black means it never touched one. This is the only difference between the two flies.