Topic: irrational choices

Converging evidence suggests that we make decisions by comparing the value of the options in front of us, but how are these values represented in the brain? Many models assume that the representational geometry of value is linear, and this shape could be important for generating rational economic decisions. However, in part due to historical focus on noisy single neurons, rather than neural populations, the linearity hypothesis has not been rigorously tested. Here, we examined the representational geometry of value in populations of neurons recorded in the ventromedial prefrontal cortex (vmPFC