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Fear Makes Scary Scents Stronger



The nose may really “know” when it comes to danger, according to a new study that found that odors associated with electric shocks in mice trigger a sensory-cell reaction much stronger than for non-fearful odors.

The finding was surprising, said study researcher John McGann, a neuroscientist at Rutgers University in New Jersey. The sensory neurons are at the very beginning of the circuit that enables the perception of smell, far outside of conscious control, and yet they “learn” to tune into scary smells.

“The effects of learning can happen not just on behavior, but on sensory processing,” McGann told LiveScience Read more…

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