Nose's response to odors more than just a simple sum of parts

Based on highly sensitive recordings of neuron activity in the noses of mice, researchers have found that olfactory sensory neurons can exhibit suppression or enhancement of response when odors are mixed, overturning a long-standing view that the response is a simple sum with more complex processing only happening at later stages.

Source: Nose's response to odors more than just a simple sum of parts