Here's how love lights up different parts of the human brain

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Taking research on love to a whole new level, a team of scientists on Monday revealed that different types of love light up different parts of the brain.

Humans use the word ‘love' in several range of contexts -- from sexual adoration to parental love or the love of nature. Now, more comprehensive imaging of the brain may shed light on why we use the same word for such a diverse collection of human experiences.

Researchers from Aalto University in Finland utilised functional magnetic resonance imaging (fMRI) to measure brain activity while subjects mulled brief stories related to six different types of love.

Parttyli Rinne, the philosopher and researcher who coordinated the study, said that the activation pattern of love is generated in social situations in the basal ganglia, the midline of the forehead, the precuneus and the temporoparietal junction at the sides of the back of the head.

"In parental love, there was activation deep in the brain's reward system in the striatum area while imagining love, and this was not seen for any other kind of love,' Rinne noted.

Love for romantic partners, friends, strangers, pets and nature were also part of the study, which was published in the Cerebral Cortex journal, Oxford University Press.

The research found that brain activity is influenced not only by the closeness of the object of love, but also by whether it is a human being, another species or nature.

"Unsurprisingly, compassionate love for strangers was less rewarding and caused less brain activation than love in close relationships. Meanwhile, love of nature activated the reward system and visual areas of the brain, but not the social brain areas," it noted.

A key surprise for the researchers was that the brain areas associated with love between people ended up being very similar, with differences lying primarily in the intensity of activation.

All types of interpersonal love activated areas of the brain associated with social cognition, in contrast to love for pets or nature - with one exception, the study noted.

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