The team from the Institute of Psychology at the Chinese Academy of Sciences developed a unique sniff-triggered device that controlled the delivery of different smells.
Participants could tell the difference when the delay was just 60 milliseconds - 10 times faster than previously thought, comparable to our visual perception speeds.
Dr Wen Zhou noted that a sniff of odours is not a 'long exposure shot' that averages out smells, but is sensitive to changes.
Their findings provide behavioral evidence for a temporal code of odour identity, illustrating the speed and sensitivity of human olfactory perception.
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