Your brain has a specialized 'fast lane' of neurons that exist for one reason: to help you make split-second choices about who to trust.
April 13, 2026
Original Paper
The Fast Lane Hypothesis: Von Economo Neurons Implement a Biological Speed-Accuracy Tradeoff
PsyArXiv · a2ctk_v2
The Takeaway
These unique cells are found only in socially complex animals like apes and whales. They allow us to process "gut feelings" about people instantly, even if that speed sometimes comes at the cost of accuracy.
From the abstract
Von Economo neurons (VENs) are large bipolar projection neurons found exclusively in the anterior cingulate cortex (ACC) and frontal insula of species with complex social cognition, including humans, great apes, and cetaceans. Their selective depletion in frontotemporal dementia (FTD) and altered development in autism implicate them in rapid social decision-making, yet no computational model of VEN function has previously existed. We introduce the Fast Lane Hypothesis: VENs implement a biologica