Results Citations. Topics from this paper. Citation Type. Has PDF. Publication Type. More Filters. View 2 excerpts, cites background. View 1 excerpt, cites background. Current and Heart Rate Control. Understanding the mechanisms underlying the spontaneous depolarization of cardiac cell membranes, either those of the sinoatrial node or those that may have this ability, such as Purkinje fiber cells … Expand. For example, what may start out as a one-night stand may feel like more because the hormones oxytocin and vasopressin, released during orgasm, make you feel deeply attached to someone.
You may feel in love after that, or instead feel somehow responsible for the person, because of these hormones. Fisher's team has found that romantic love doesn't have to die -- they found the same activity in the brains of people who said they were in love after 20 years of marriage as in people who had just fallen in love.
This brain area makes dopamine and sends it to other areas. In the days of early humans, in hunting-and-gathering societies, these qualities were especially advantageous for finding a person to bear and raise children with, she said. Why, then, do small children fall in love if they are not trying to reproduce?
Fisher hypothesizes that kids -- even 4-year-olds -- practice at love and learning more about themselves before it begins to become important to them. Love also has health benefits for people who have aged beyond their reproductive years, she said.
Being in love makes people feel optimistic, energetic, focused and motivated, which were all positive for health and societal contribution in the early days of humans, she said.
So, it makes sense evolutionarily that people can still fall in love after their childbearing period. Romance also is good for you. Heart rate refers to the number of times the heart beats per minute, and is directly related to the workload being placed on the heart. When the body is in a resting state i. A normal resting heart rate ranges from beats per minute bpm.
Resting rates higher than bpm suggest that the heart is working too hard to circulate blood, and thus may indicate a serious problem that should be monitored by a physician. Resting rates lower than 60 bpm occur more often with endurance-trained athletes whose bodies are more efficient at utilizing oxygen from the blood.
Heart rate is controlled by the two branches of the autonomic involuntary nervous system. The sympathetic nervous system SNS releases the hormones catecholamines - epinephrine and norepinephrine to accelerate the heart rate. The parasympathetic nervous system PNS releases the hormone acetylcholine to slow the heart rate.
Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate. Exercising for any duration will increase your heart rate and will remain elevated for as long as the exercise is continued.
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Advanced search. Skip to main content Thank you for visiting nature. Abstract THE way in which adrenaline acts on the sinoatrial SA node to accelerate the heart rate has hitherto been obscure. Access through your institution.
Buy or subscribe. Rent or Buy article Get time limited or full article access on ReadCube. References 1 Hauswirth, O. Article Google Scholar 4 Reuter, H. Google Scholar 7 Brown, H.
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