Exercise: Working Out the Memory as Well as the Muscles Article

This article talks about how exercise may stimulate the growth of neurons in part of the brain. Earlier, there was a study involving mice that exercised, and scientists found out that the exercising mice grew more neurons in the hippocampus part of the brain. This is because the exercise made more blood flow to that part of the brain. Scientists performed this same experiment on people. Using MRI scans, they saw that the people who stuck with an exercise program for 3 months showed better growth in that area of the brain compared to those who didn't. Both groups were also given a memory test before and after the three month period, and those who exercised did better.
Magnets and magnetic fields are involved in this topic in multiple ways. First off, the MRI uses the power of magnetic fields to take images of the insides of people. The magnet aligns particles in the body that help produce an image for the doctor. These magnets range from .5 to 2 Tesla in hospitals. Anything stronger than that is not allowed for diagnosis, but there have been some MRI machines made that go up to 60T for research.
Another way magnetic fields are used is in the brain itself. When a part of the brain is used, small electrical pulses travel between neurons to send a signal. When this happens, a magnetic field is produced around the spot where the pulse happened. Brain imaging machines detect these fields to see exactly where the activity is happening.

Data Show How Electronics Mix With Medical Devices Article

This article was about how certain electronic devices can interfere with medical equipment. There were two cases given where people with implanted medical devices experienced malfunctions with their equipment because of electronic article surveillance systems. In one case, a man's implanted defibrilator was set off because of the EAS. The other case involved a woman with a pacemaker that went haywire while she was standing next to the machine.
Another thing this article talks about is how cell phones may not be as big of an interference with hospital devices as once was thought. An experiment was performed, and the cellphones they used did not mess up the medical equipment being tested. They say even though the medical devices weren't messed up, it is still a good idea to keep phones off when around them, because there may be other devices that may pick up interference.
All electronic devices give off some sort of magnetic field. This is caused by the electricity flowing through the conductors, which makes a slight electromagnet. If another strong magnetic field is brought in, it could disrupt the flow of electrons in the device, causing it to fail. This is because magnetic fields can cause electrons to change path by turning. Although the conductors in electronics give a specific path for the electrons to follow, I think they could still be messed up by a magnet, causing an undesired effect, like what was stated in the article. The things in the article mostly talked about radiowaves, but I think magnets, if strong enough, could produce similar results.