"In the end, what we pay the most attention to defines us. How you choose to spend the irreplaceable hours of your life literally transforms you. All relationships change the brain — but most important are the intimate bonds that foster or fail us, altering the delicate circuits that shape memories, emotions and that ultimate souvenir, the self. Brain scans show synchrony between the brains of mother and child; but what they can’t show is the internal bond that belongs to neither alone, a fusion in which the self feels so permeable it doesn’t matter whose body is whose. Wordlessly, relying on the heart’s semaphores, the mother says all an infant needs to hear, communicating through eyes, face and voice. Thanks to advances in neuroimaging, we now have evidence that a baby’s first attachments imprint its brain. The patterns of a lifetime’s behaviors, thoughts, self-regard and choice of sweethearts all begin in this crucible. We used to think this was the end of the story: first heredity, then the brain’s engraving mental maps in childhood, after which you’re pretty much stuck with the final blueprint. But as a wealth of imaging studies highlight, the neural alchemy continues throughout life as we mature and forge friendships, dabble in affairs, succumb to romantic love, choose a soul mate. The body remembers how that oneness with Mother felt, and longs for its adult equivalent. " .....
"When two people become a couple, the brain extends its idea of self to include the other; instead of the slender pronoun “I,” a plural self emerges who can borrow some of the other’s assets and strengths. The brain knows who we are."
"The Brain on Love"