Luktsinnet ingår i en av de äldsta delarna av vår hjärna och de receptorer som finns i näsan går snabbt och omedelbart in i hjärnan. Ibland (har jag för mig) brukar denna del av hjärnan kallas reptilhjärnan.
The cortical nucleus is involved in the sense of smell and pheromone-processing. It receives input from theolfactory bulb and olfactory cortex. The lateral amygdalae, which send impulses to the rest of the basolateral complexes and to the centromedial nuclei, receive input from the sensory systems.Sen skriver engelska wiki att ...
Furthermore, the amygdala is found to be activated in fMRI when people observe that others are physically close to them–such as when a person being scanned knows that an experimenter is standing immediately next to the scanner, rather than standing at a distance.Jag tror det har att göra med luktsinnet. Även om man sitter i en skanningmaskin och inte ser eller hör något gissar jag att man kan förnimma närheten av en annan människa med lukten.
... my mother, seeing that I was cold, offered me some tea, a thing I did not ordinarily take. I declined at first, and then, for no particular reason, changed my mind. She sent for one of those squat, plump little cakes called "petites madeleines," which look as though they had been moulded in the fluted valve of a scallop shell. And soon, mechanically, dispirited after a dreary day with the prospect of a depressing morrow, I raised to my lips a spoonful of the tea in which I had soaked a morsel of the cake. No sooner had the warm liquid mixed with the crumbs touched my palate than a shudder ran through me and I stopped, intent upon the extraordinary thing that was happening to me. An exquisite pleasure had invaded my senses, something isolated, detached, with no suggestion of its origin. And at once the vicissitudes of life had become indifferent to me, its disasters innocuous, its brevity illusory - this new sensation having had on me the effect which love has of filling me with a precious essence; or rather this essence was not in me it was me. I had ceased now to feel mediocre, contingent, mortal. Whence could it have come to me, this all-powerful joy? I sensed that it was connected with the taste of the tea and the cake, but that it infinitely transcended those savours, could, no, indeed, be of the same nature. Whence did it come? What did it mean? How could I seize and apprehend it?
I drink a second mouthful, in which I find nothing more than in the first, then a third, which gives me rather less than the second. It is time to stop; the potion is losing it magic. It is plain that the truth I am seeking lies not in the cup but in myself.