A General Approach to Coding in Early Olfactory and Visual Neural Populations

Abstract

Recent experimental and theoretical work on neural populations belonging to two separate early sensory systems, olfaction and vision, has challenged the notion that the two operate under different computational paradigms by providing evidence for the respective neural population codes having three central, common features: they are highly redundant; they are organized such that information is carried in the identity, and not the relative timing, of the active neurons; they are capable of error correction. We present the first model that captures these three properties in a general manner, making it possible to investigate whether similar structure is present in other population codes. Our model also makes specific predictions about additional, as yet unseen, structure in such codes. If these predictions are found in real data, this would provide new evidence that such population codes are operating under more general computational principles.