No new smell cells
Unlike other mammals, humans don’t make new olfactory neurons, a study suggests
By Tina Hesman Saey, 15:38 PM May 23, 2012
People may be born with all the smell-sensing brain cells they will ever have, a new study concludes.
That makes human brains different from those of rodents, nonhuman primates and other mammals, which constantly make new nerve cells, or neurons, in the odor-processing olfactory bulb. Humans don’t rely on the sense of smell as much as other animals do, so maybe it isn’t surprising that people don’t make new odor-sensing cells, says study author Jonas Frisén, a neuroscientist at the Karolins...
Source URL: https://www.sciencenews.org/article/no-new-smell-cells