Smell Map Reveals Organized Nasal Map

Researchers sequenced ~5.5 million mouse nasal neurons (from >300 mice) and found odor receptor–expressing neurons are spatially organized into horizontal stripes that align with the olfactory bulb map, overturning the idea that receptor expression is random. The work is published in Cell and suggests conserved sensory topography extends to olfaction, not just vision and hearing. — If similar organization exists in humans, this rewrites basic models of smell, guides research into anosmia treatments, and links sensory mapping to mental‑health and clinical interventions.