How does the brain translate scents into meaningful information? This review examines neuronal coding strategies in the early olfactory system, just one or two synapses away from the receptors. It critically discusses how basic coding notions, such as identity, spatial, temporal, and correlation codes, apply to the processing of odors. The research looks at the processing of odors by the early olfactory system and defines different perspectives on neural codes. It also challenges the traditional understanding of lateral inhibition in odor coding by mitral cells and extends it to a broader, more appropriate context. By providing a systems-level perspective, this review offers valuable insights into the complexities of olfactory processing. It offers a new perspective of how neural networks process odor information and lateral inhibition that is appropriate for olfactory processing.
Published in Science, this review on olfactory coding aligns with the journal's broad scope encompassing various scientific disciplines. By examining neuronal coding strategies in the olfactory system, the review contributes to the understanding of neural processing and sensory perception, attracting a wide audience of scientists.