It is not just the brain but various physiological events occur during episodes of falling in love such as breathlessness, flushed cheeks and a feeling of euphoria. An MRI scan of the brain during such a state shows those areas rich in dopamine (the feel-good neuro-transmitter) becoming very active.
Areas of the brain involved with expectation of reward, and those associated with pleasure, are those that are aroused by the strong feeling of love. This area of research was begun by two married professors working in Harvard university.
The human brain increases and decreases of specific chemicals and hormones when a person is in love. During what neuroscientists call the “lust phase”, the brain chemical dopamine generates feelings of euphoria. The nucleus accumbens, the brain’s pleasure center, experiences an increase in blood flow when a person is in love, and this can actually be seen on an MRI (magnetic resonance image) scan of a brain.
After being in love for a while, a person’s body develops tolerances to the pleasurable chemicals. At this point, the hormones oxytocin and vasopressin become more prominent to “create feelings of well-being and security.”
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