Then, ventricular fibrillation, the heart quivers instead of beats this is just before death of the pig and then the pig died it went flat line.

The artificial heart machine, also known as a left ventricular assist device, or LVAD, has been used to keep patients alive until they receive a heart transplant. But there is a shortage of hearts for transplantation, and in the US, LVADs are now being implanted as a long term treatment for heart failure, just as a dialysis machine replaces a kidney.

Over the past year and a half, in the wake of Thomas Philippon and Ariell Reshef s estimate that 2 of US GDP has been wasted in the pointless hypertrophy of the financial sector, evidence that America s financial system is less a device for efficiently sharing risk and more a device for separating rich people from their money a Las Vegas without the glitz has mounted.

Similarly, there is evidence that the prefrontal cortex a key structure in emotional regulation as well as in decision making and working memory shrinks in major depression. On the other hand, rather than atrophying, the amygdala, the seat of emotional memories, becomes hyperactive both in post traumatic stress disorder and depressive illness, and there is evidence from animal studies of a hypertrophy of nerve cells after repeated stress.