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As part of human’s evolutionary survival mechanisms, the body’s fight-or-flight response is automatically triggered when the brain perceives a threat.This response, governed by the autonomic nervous system, has in some ways become maladaptive in the modern world as it was designed to produce a set of reactions to heighten your physical response to a threat and help you survive.During the scans, the students were shown pictures of loved ones or a friend of the same sex and age as the object of their affections.Seeing a lover prompted activity in four distinct brain regions that were not active when looking at pictures of the friend, New Scientist reported last week. One was a spot in the medial insula, the mysterious central lobe of the brain whose function is still a puzzle.Designed above all else to make us survive, the brain’s radar is very sensitive to any perceived danger, even if that danger is rejection rather than ingestion by a predator!So as you answer that phone call, or lean in for the first kiss, the heart and head plunge you into a state of hyper-vigilance, the flight-or-fight response keeps your body primed to respond to the perceived threat.However, today the same response designed to save you from a saber tooth tiger is now activated by a suitable, sexy single!

Mr Bartels is confident that he was measuring brain activity associated with love - and not simply sexual attraction.Your blood is getting pumped faster and directed into your limbs, rather than your stomach, so you can run faster or be stronger to fight harder, the additional glucose providing a boost of extra energy for your defense.As a result of the decreased flow of blood to your digestive system, the muscles in your stomach and intestine slow down, putting the brakes on digestion and reducing the amount of oxygen available to this area of the body.The autonomic nervous system kicks off the sympathetic branch of your neuro-chemical reaction, releasing a cascade of adrenaline and cortisol into your body.The adrenaline makes your heart beat faster to pump your blood quicker, causes your liver to release a large dose of glucose and simultaneously directs the blood away from your stomach, each fulfilling a function of survival and increasing your alertness.




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Presentation Description: In this edition of the Bellingham Mountaineers Winter Speaker Series, climber Steph Abegg and geologist Doug Mc Keever will join forces to discuss the variety of rock types that are most commonly encountered in climbs in Washington.


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Rachel Wood does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.


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