Abstract 
In  this research a new vision for human heart , for many years scientists  studied heart from the physiological side and they considered it only a  blood pumping machine no more no less, but starting from the twenty one  century and because of the high development in  heart transplantation and artificial heart surgeries  ,researchers started to notice a strange and vague  phenomenon  which is a change in the patient's psychological status after heart  transplantation , these psychological changes are very deep to the  extent that after changing the old heart with a new one or with an  artificial heart, patient became affected by many changes in his  beliefs, what he or she likes and hate and also these changes may affect  his believes!!!
From  here we found that all recent science and researches talks about many  verses in Qur'an which is considered to be koranic precedence in Cardiology. 
Introduction 
As  we mentioned before, some researchers believe that heart is only a  blood pumping machine, also some people believe that the mentioned heart  in Qur'an is the moral heart like soul  not the physical one, but what is the truth?
God  creates heart before brain in the embryo and it start to pulsing from  the first day of creation till death. Scientists believed that brain is  controlling these pulses, but they noticed that during heart  implantation surgeries, the new heart start to pulsing immediately  before it gets any orders from brain.
That  considered being a sign that brain and heart are working independently  .also they believe that heart direct brain, and each cell in heart has  got a memory.
Dr Schwartz says that our history is stored inside each cell in our body.   
Facts about heart  
Heart  is the engine that feeds more than 300 million of million cells in  human's body. Its weight is about (250 – 300) gram (you can put it in  your fist). Ill heart may weight about (1000) gram because of the  Enlargement.  
The  heart starts its mission since you are an embryo (21 days after start  of pregnancy) to pumping blood to the entire body, when you are adult  your heart can pump more than seventy thousand liter of blood every day.  When you reach the age of seventy, the total pumped amount of blood  would be more than million barrel during these years. 
Heart  provides all cells of our body with oxygen, as cells picks up oxygen to  burn it to feed itself, and then it throw carbon gas and poisoned  materials in blood as heart pumps it again toward the lungs which purify  blood and throw carbon gas during the breathing process (inhalation and  exhalation). The length of the vascular network in our body is about  one hundred thousand kilometer. 
Relation between brain and heart 
Does  brain control heart as said by scientists? or vice versa? Scientists  admit that medicine is still undeveloped, as they have no idea about the  precise operations in human brain, also how can we remember things? And  why do we sleep? They published only what they see and observes in  their researches without understanding any kind of an absolute rule  concerning these operations. 
But  we are the Muslims have an absolute rules which are the known rules in  Qur'an fourteen century ago. There are many verses which tell us that  heart is the center of feeling, thinking and memory. 
Only  from thirty years, researchers started to notice the relation between  brain and heart when they noticed that heart has a vital role in  understanding the surrounded world and they had found that heart can  affect the electrical activity of brain. 
Scientists didn't prove that there is no relation between heart and emotions. It is so hard to prove such thing.
But  scientifically, heart is connected with brain through a very  complicated network of neurons and there are flows of messages between  both of them in form of electrical signals. Scientists confirm that  heart and brain are working simultaneously in harmony and without that  harmony, troubles might occur.  
Dr. Armour say that heart has a special system in processing incoming information from entire body and success of heart transplantation depends on the neural system of the transplanted heart and how much it is able to adapt with the patient. 
Interesting scenes 
Linda Marks who used to be a therapist in the heart center for more than twenty years says:  people  used to ask me a question, what are you doing in a heart center and you  know that heart is only a blood pumping machine so that there is no  relation between heart and human psychology ? My answer was: I always  feel with a big difference in people's psychology before and after heart transplantation as I feel with many changes in his or her emotions but  in fact I had no scientific evidence for that. Till I met Dr Linda  Russek who recorded the transmitted electromagnetic frequencies from  heart and brain and how much these frequencies affect brain of the other  people!!      
Prof Gary Schwartz specialist in Psychiatry in Arizona University  and Prof Linda Russek believe that heart has a special power which  enables it to store and process information. Therefore memory is not  only in brain but also in heart. Prof Gary made a research which  included more than three hundred patient who performed transplantation surgery and he found that all patients were exposed to many psychological changes after the surgery.
Prof Gary Schwartz says: we made a heart transplantation  surgery for an ill child as we implanted the heart of a dead child in  the body of that child. Mother of the dead child says: every time I huge  the child I feel as if my child still alive and that child is my own  one. 
That  child started to suffer from a defect in his left side and that was the  same case of the dead child. How can we explain that?
Simply,  because the heart started to supervise brain activities and that defect  occurred because heart started to make some development in child's  brain.
Prof Linda says:  another story for a girl who performed a heart transplantation  surgery but after the operation she used to feel with pain in her chest  and when she asked her doctor he told her that feeling with pain is  because of the medicines. But later they knew that the heart inside her  was transmitted from another girl who was hit by a car in a car accident  and last word the dead girl said was "I feel with pain in my chest. 
Also,  another story for a girl who sank in the pool and her family donated  with her heart to another boy who used to be afraid from water after the  heart transplantation surgery and he always feels afraid as he used to ask his family not to drop him in water. 
Heart is responsible for emotions 
An  interesting discovery that is all people who changed their hearts with  an artificial one had lost their feelings and ability to love. In 11/8/2007, the American newspaper "Washington post" published reportage about Peter Houghton who made an artificial heart transplant. He says: my feelings had changed, I am not able to know what I hate and what I love even I don't have feelings toward any of my grandchild.  
That  man became not interested at any thing even in money or life itself and  he became had no idea about reason of life and he started to think to  commit suicide. He became not able to understand the world or to think  about future and also he lost his believe in God and became careless  about the hereafter like before. 
Till this moment, scientists don't understand this phenomenon and the secret behind that psychological change. Prof Arthur Caplan Head of Medical Ethics at University of Pennsylvania  says: scientists used to deal with human body as if it is a machine and  we never gave any attention to the relation between feelings and  organics in our body. 
The artificial heart is a mechanical device which implanted into the body to replace the biological heart.  It uses a battery as a power supply. If you put your ear on the  patient's chest you can hear sound of an electrical machine not pulses  of a heart. 
On December 2, 1982, Dr. William DeVries  implanted the artificial heart into retired dentist Dr. Barney Bailey  Clark (b. 21 January 1921), who survived 112 days with the device, dying  on 23 March 1983. In 2001 scientists manufactured an artificial heart  which called AbioCor .The first AbioCor to be surgically implanted in a patient was on July 3, 2001.  The AbioCor is made of titanium and plastic with a weight of 2 pounds  and its internal battery can be recharged with a transduction device  that sends power through the skin. 
The first complete artificial heart was implanted in 2001 in a patient's body who still alive for four months till he died.
Photo for a  an artificial heart implantation surgery, scientists confirm that  heart  implanting causes a huge defect in realizing and understanding which  prove that heart has a vital role in these operations and heart is not  only a pumping machine. It is more complicated than we imagine   
The  American Administration for Food and Drug confirm that the artificial  heart failed in its mission as all patients who implanted it died after  couple of months due to sudden Angina pectoris.   
Brain in the heart  
The  most reasonable explanation for this phenomenon is that there are some  special programs for memory inside cells of our heart which stores all  events; these programs send these memories to brain in order to process  it. Heart pulses rate is changing according to the psychological and  emotional status of us. DR J. Andrew Armour confirms that there is a  very complicated brain inside the heart. In our heart there are more  than forty thousand neuron which works in an extraordinary precision to  control heart pulses, hormone production and information storing, after  that these information are sent to brain. This information plays a vital  role in realizing and understanding. 
So  information flows from the heart to the brain through special paths  ,then it leads brain cells to be able to understand and realize ,  nowadays scientists are working to establish many centers concerned  about studying the relationship between heart and brain and the relation  between the heart and the cognitive and psychological operations. 
Vibrations from the heart  
DR  Paul Pearsall say that heart can feel and remember and it transmit  vibrations to communicate with other hearts, also it helps in organizing  immunity of the body. also it transmit information in each pulse to the  entire body , therefore  some researches have got a question , is it possible for the memory to stay deep inside our hearts? 
The  heart with its organized harmony controls the entire body as it  considered to be a method to linking all cells, when blood goes into  each cell then it feed these cells not only with oxygen but also with  information. 
In  heart math institute they found that heart has a very strong  electromagnetic field which affects all surrounding people. Therefore  human can communicate with others only with his heart without talking. 
The  heart math institute had performed many experiments to prove that heart  transmit electromagnetic frequencies which affects brain. So heart may  affect the realizing and the understanding of human, also they found  that heart transmit a very strong electrical field which controls the  entire body. Curve in below represent heart pulses and the upper three  curves represent brain reactions. Therefore brain is affected by heart  and its frequencies changes according to the heart condition. 
Also  they found a relation between number of heart pulses and the  transmitted waves from brain (Alfa waves). The more heart pulses the  more transmitted waves from brain.
 Heart and Realization 
Rollin  McCraty and Mike Atkinson had made a research which was published in  the annual meeting of The Pavlovian Society. They found that there is a  relation between heart and the realization. They proved this relation by  measuring the electromagnetic activity of heart and brain when people  are trying to understand something. They found that when heart  performance is in a low level, realizing also will be low.
The results of the Institute of Heart Math  was marvelous .they found that when you speak or touch another person,  the changes in your heart will affect the brain activities of the other  person!! This means that your heart affects his brain.   
In  this photo, a man lives with an artificial heart, he is connected all  the time with wires to get a continuous charging for the heart battery,  any one perform an artificial heart implantation   surgery  might lose his feeling and reactions toward community. It is evidence  that heart has got a vital role in thinking, reactions and brain  direction  
Precedence of Qur'an in cardiology   
Qur'an told us about results of these researches .we can summarize that in the following points:
1.                   Today  , scientists tell us about a brain in the heart which consists of 40000  neuron and it lead the brain to do its missions , so our God made the  heart as a method of understanding , God says:( Have  they not traveled through the land, and have they hearts wherewith to  understand and ears wherewith to hear? Verily, it is not the eyes that  grow blind, but it is the hearts which are in the breasts that grow  blind.)( Sûrat Al-Hajj – verse46)
2.                   Also scientists tell us about the vital role of the heart in understanding and realizing, God says :( They have hearts wherewith they understand not)( Sûrat Al-A‘râf -  verse 179), so  Qur'an told us about the realization center in human which is the heart. 
3.                   Most  people who implant an artificial heart feel that their heart became  solid with no feeling or love inside, God says to Jews :( Then, after that, your hearts were hardened and became as stones or even worse in hardness)( Sûrat Al-Baqarah- verse 74)  so Qur'an told us about one of heart features which is the hardness and softness, so God says about disbelievers :( So woe to those whose hearts are hardened against remembrance of Allah! They are in plain error) (Sûrat Az-Zumar - verse 22) but on the other side God says about the believers :( Then their skin and their heart soften to the remembrance of Allah)( Sûrat Az-Zumar -  verse 23) . 
4.                   Scientists  confirm that each cell in our heart is considered to be a warehouse for  events and information .so scientists tell us about memory of the  heart, God be he blessed and exalted told us that everything is in the  heart. God says :( but that Allah might test  what is in your breasts; and to examine closely which was in your hearts  (sins), and Allah is All-Knower of what is in (your) breasts.)( Sûrat Âl-‘Imrân – verse 154) 
5.                   Some  researchers confirm that heart is very important to the hearing process  and any defect in heart may affect the hearing process. in reality I  saw a similar case for a Muslim who used to eat at the day of Ramadan  and he doesn't pray , that man was infected in his heart but this  problem was developed to affect his hearing system as he lost the  ability to hear anything . Later, that man died and he said before dying  :( I can't hear anything), God says :( And we seal up their hearts so that they hear not?)(Sûrat Al-A‘râf - verse 100).
6.                   According  to the most recent researches, heart has an important role in learning  because it leads and control brain's neurons. Qur'an made a link between  heart and science. God says :( and Allah has  sealed up their hearts (from all kinds of goodness and right guidance)  so that they know not (what they are losing).)( Sûrat At-Taubah -  verse 93) 
7.                   Now  , it is confirmed that laying center is in the forelock which is in the  upper front of the brain, scientists observed a great activity in this  area when human tell  lies , but  the stored information in heart is real and sincere, so when a man tell  lies he speaks with his tongue with the opposite of what is in his heart  . God says :( They say with their tongues what is not in their hearts) (Sûrat Al-Fath - verse 11) as tongue obeys the forelock, God says about this forelock :( A lying, sinful forelock) (Sûrat Al-‘Alaq – verse 16).
8.                   We  read about the man who implanted an artificial heart and how he lost  his believe in God to be an atheist, so the belief is in heart not in  brain, God says : . (O  Messenger let not those who hurry to fall into disbelief grieve you, of  such who say: "We believe" with their mouths but their hearts have no  faith.)(Sûrat Al-Mâ’idah-verse 41).
9.                   After  many researches about the artificial heart, scientists found that heart  has a vital role in fear and scare , as when they asked the man who  implanted an artificial heart , he told them that he became not able to  feel with fear , the Qur'an told us about hearts that feel with fear,  God says :( The believers are only those who,  when Allah is mentioned, feel a fear in their hearts and when His Verses  (this Qur'an) are recited unto them, they  increase their Faith; and they put their trust in their Lord (Alone);)( Sûrat Al-Anfâl -  verse 2) also God says :( and He cast terror into their hearts)( Sûrat Al-Hashr- verse 2).
Miracles in the prophetic Sunah 
Prophet Mohamed (peace be upon him) preceded  all western scientists when he told us fourteen century ago about the  heart and its importance for all the body and for the soul , as if the  heart is in a good condition and good relation with God all the body  would be in a good condition and we can notice that in the case of the  man who implanted an artificial heart and how much his body and feeling  were destroyed , the prophet said :( in the body there is a  little  lump of flesh if it is in a good condition all the body will be good  and if it is in a bad condition the entire body will be bad , this  little lump of flesh is the heart) 
The best treatment for heart 
Scientists  confirm that the first reason of death is the disturbance in heart  mechanism and the best treatment is to keep heart stable, also it was  proved that some sound frequencies may affect the heart performance, indeed sound of Qur'an is the best sound to hear. God says :( Those  who believed (in the Oneness of Allah), and whose hearts find rest in  the remembrance of Allah: verily, in the remembrance of Allah do hearts  find rest)( Sûrat Ar-Ra‘d  – verse 28). by experience I found that reading this verse seven times  in the morning and seven times at night will leads to a big rest and  stability in heart. 
We ask our God to fix our hearts on the belief. We must always remember our prophet supplication which is (O God who can deviate our hearts, please fix it on your religion) also we have to say as God says :( (They  say): "Our Lord! Let not our hearts deviate (from the truth) after you  have guided us, and grant us mercy from you. Truly, you are the Best  granter.")(Sûrat Âl-‘Imrân- verse 8)
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By: Abduldaem Al-Kaheel
Sources:
1- Pearsall P, Schwartz GE, Russek LG, Changes in heart transplant recipients that parallel the personalities of their donors, School of Nursing, University of Hawaii, www.springerlink.com, 2000.
2- Paul Pearsall, The Heart's Code: Tapping the Wisdom and Power of Our Heart Energy, New York, Broadway Books, 1998.
3- Linda Marks, THE POWER OF THE HEART, www.healingheartpower.com, 2003.
4- Dorothy Mandel, Spirit and Matter of the Heart, Grace Millenium, Winter 2001.
5- Linda Marks, The Power of the Soul-Centered Relationship, HeartPower Press, 2004.
6- Paul Pearsall, Gary E. Schwartz, Linda G. Russek, Organ Transplants and Cellular Memories, Nexus Magazine, April - May 2005.
7- Schwartz GER, Russek, LGS. The Living Energy Universe. Charlottesville, VA: Hampton Roads Publishing, 1999.
8- His Heart Whirs Anew, Washington Post, August 11, 2007.
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11- Rollin McCraty, The Scientific Role of the Heart in Learning and Performance, Institute of HeartMath, 2003. 
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13- Annual Meeting of the Pavlovian Society, Tarrytown, NY, 1999http://www.kaheel7.com/eng/index.php/health-a-medicine/199-hearts-wherewith-they-understand