The WIS researchers hypothesized that the whole brain is coming to the attention of processing information while inhaling, even when it comes to functions that have nothing to do with the smell (“sniffing brain”). First, the researchers measured the flow of air in the noses of subjects while solving math exercises, performing visual-spatial tasks and dealing with language tasks.
The subjects were asked to press a button as soon as they were ready for the next exercise. It turned out that they tended to put air into their bodies in time for their readiness to deal with the next task. Then, in a visual-spatial task, half of the questions appeared during the subjects’ inhalation and the other half with exhalation. It was found that the success rates were significantly improved when solving questions while inhaling.
The researchers also measured the electrical activity in the subjects’ brains at rest and during taking tasks, and found in both cases that the connectivity between the brain areas was significantly different between inhalation and exhalation.The researchers noted that the results have nothing to do with oxygen entering the body, as the effect on the brain in the experiments was immediate (about 0.2 seconds)