Rice study: There's a rivalry between your nostrils | Houston & Texas News | Chron.com - Houston Chronicle: "But what would happen if each nostril inhaled a different smell and sent varying signals to the brain? That's what Rice University psychologist Denise Chen wondered, so she set up a series of experiments to find out. The results were published Thursday in the journal Current Biology.
In one experiment, 12 subjects took 20 sniffs from a specially designed bottle that carried a rose scent to one nostril and a marker pen to the other. For each participant, at times, the rose smell dominated, and other times the marker did.
Why? “The brain is conflicted,” Chen said."
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