Frontal cortex neuron types categorically encode single decision variables

Junya Hirokawa, Alexander Vaughan, Paul Masset, Torben Ott, Ádám Kepecs

Abstract: Frontal cortex neurons can be grouped into categorical response types corresponding to particular decision variables, such as reward size, decision confidence, or value, and individual variables may be encoded in distinct projection populations; this suggests that, like  neurons in sensory cortex, frontal neurons form a sparse and overcomplete representation of important variables in the environment.