All in the timing
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If you can tell the difference between a merlot and a cabernet franc just by smell, it's probably all in the timing.
That's because the odor-decoding centers of the brain will pay more attention to the first smell signals to reach them, regardless of how long or strong the remainder of the sniff may be, according to a pair of Duke University neurobiologists who have teased apart the neural circuitry of smell in mice.
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