Paper Discussion: What insects can tell us about the origins of consciousness

SF Philosophy Club Monthly Meeting Join us for our October philosophy discussion at Ballast Coffee.

We'll be discussing the paper: "What insects can tell us about the origins of consciousness" https://www.pnas.org/doi/pdf/10.1073/pnas.1520084113

When: Sunday, October 25, 2026, 1 PM - 3 PM. Where: Ballast Coffee, 329 W Portal Ave, San Francisco, CA 94127

Newcomers welcome. Come prepared for thoughtful conversation and friendly debate.

Abstract: How, why, and when consciousness evolved remain hotly debated topics. Addressing these issues requires considering the distribution of consciousness across the animal phylogenetic tree. Here we propose that at least one invertebrate clade, the insects, has a capacity for the most basic aspect of consciousness: subjective experience. In vertebrates the capacity for subjective experience is supported by integrated structures in the midbrain that create a neural simulation of the state of the mobile animal in space. This integrated and egocentric representation of the world from the animal’s perspective is sufficient for subjective experience. Structures in the insect brain perform analogous functions. Therefore, we argue the insect brain also supports a capacity for subjective experience. In both vertebrates and insects this form of behavioral control system evolved as an efficient solution to basic problems of sensory reafference and true navigation. The brain structures that support subjective experience in vertebrates and insects are very different from each other, but in both cases they are basal to each clade. Hence we propose the origins of subjective experience can be traced to the Cambrian.