title: Two layers of neural variability.
authors.forename: Mark M
authors.initials: MM
authors.lastname: Churchland
authors.forename: L F
authors.initials: LF
authors.lastname: Abbott
mesh_terms: D000818:Animals; D002540:Cerebral Cortex / Q000166:cytology*; D006801:Humans; D008959:Models, Neurological; D009415:Nerve Net / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D017711:Nonlinear Dynamics