action potential physics science experiment

#Action potential physics science experiment how to

The changes in shape are due to a balance of forces and energy: Then when it bounces up, it returns to its original shape. When it hits the ground, the bottom of the ball becomes flat against the floor. But what makes a ball bounce? If you were to see a ball drop to the ground in slow motion, you would see its shape change dramatically. This experiment was done using a very low current.Bouncing is what makes playing with a ball so much fun.

#Action potential physics science experiment how to

The Risky Part: what to be aware of and how to keep the science safe:ĭo not try this at home. And this instantaneously switches off their symptoms! The power of electricity! The surgeons carefully place the electric device there, then stitch the scalp back up and send little pulses of electricity to the people's brains. This is a really small part of the brain, right in the middle, which is involved in reward and feeling pleasure. People opting to have this treatment have surgery to open up their skulls, and doctors insert the little shock panel into a specific region of the brain called the nucleus accumbens. They are treating people with really bad cases of depression, heroin addiction and obsessive compulsive disorder in this way. Scientists are also burying smaller versions of these electric shock panels that were placed on the teacher's funny bone, in people's brains. And so scientists are looking at drugs that affect these ions to help treat people who have conditions like schizophrenia, to help activate certain areas. Potassium not only communicates electrical activity in nerve cells in the body, but is also used in the brain. And he doesn't eat so many bananas these days. The excess potassium is now out of his system, his muscles and nerve cells are functioning as they were. And so Peter Andre, by eating about 50 bananas a day overdosed on potassium, causing his body to be flooded with potassium ions, messing up his nerve cell electrical activity and causing his muscles to seize up giving him temporary paralysis. He overdosed on the yellow bad boys.īananas are usually pretty healthy things to eat, but not that many! They contain a lot of potassium, the charged molecule that nerve cells use to make electrical activity. For example, how many bananas did Peter Andre use to eat? An excessive 50 a day. This is a brilliant example of how we can activate our nerve cells and muscles in the body with electricity! In certain people this process can go wrong though. Why are neuroscientists so very excited about this? If you increase the frequency of the electrical signal even further, eventually it will stop having an effect as the nerve cells start getting used to the electrical signal and start to just ignore it. This recruitment of neighbouring muscle cells over time will increase the force of the twitching. If you leave the electrical signal applied to the ulna nerve for a long time more and more muscles fibres will be recruited for activation and contraction. This also leads to a more pained expression on the teacher. This increases the signal received by the muscles in the hand, and the muscle responds to the increased current by the hand twitching more vigorously and with more force. Increasing the current of the electrical stimulation applied at the ulna nerve increases the flow of electrical charge travelling up the ulna nerve. This electrical signal causes the muscle fibres, which make up the hypothenear muscle, to contract and relax in rapid succession causing the twitch.īy applying electricity directly to the ulna nerve fibre at the funny bone we are stimulating the nerves downstream of the motor cortex. This causes electrical activation of the muscles below your little finger, you hypothenear muscles.

Once the electric signal reaches the wrist it discharges a little chemical, or neurotransmitter, called acetylcholine. The nerve sends the electrical current via an action potential. This nerve cable runs all the way from your shoulder to your wrist. To move your little finger the motor cortex initiates an electrical signal which then passes to a bundles of nerves in the body called the ulna nerve. Usually your hand muscles are controlled by the motor cortex, a part of the brain running like a strip over the head from one ear, to the other. These nerve cells carry information from your brain to your muscles, and they carry the information as electricity. Your ulnar nerve runs all the way from the shoulder to your little finger, and is made up of motor nerve cells. In this experiment we applied electricity directly to a nerve fibre called the ulna nerve, just beneath the funny bone. This happens because the nervous system uses electricity as it's method of communication, to process information and also direct our muscles to move, as you can see in this video: