In physics, the work required or energy gained when a positive charge is moved from infinity to a certain point in an electric field is called electric potential. Electrical potentials are very common in the human body, particularly across the cell membrane and in nerve impulses. Everything we do is controlled and facilitated by electrical signals passing through our body. Everything is made up of atoms, including us. Atoms are made up of positively, negatively, and neutrally charged atoms called protons, electrons, and neutrons. Relative switching between charges allows electrons to flow from one atom to another; this flow is called electricity. Since we humans are crazy about atoms, we could produce electricity. We rely on physics to help us understand electrical potentials and their role in the action of neurons, from transmitting information to activating cardiac, skeletal, and smooth muscles. Neurons receive impulses from dendrites, which pass through the axon in the form of an electrical potential. These potentials are created by an imbalance in the concentrations of potassium and sodium ions in and out of the cell. This imbalance sets the bar for our electrical capacity. When active, our cells contain more sodium ions than potassium ions and vice versa when resting. Neurons send messages electrochemically, so these chemicals produce an electrical signal. Potassium ions are negatively charged, so the interior of the cell has a partial negative charge and the exterior of the cell membrane is positively charged because the sodium ions are positive. When an impulse travels along a nerve, sodium ions flood the cells and make the inside of the cell positive; then, the potassium ions leave the cell (Freudenrich 2007). The electrical...... middle of paper ......receives tiny voltages. The potential versus time is known as the electroencephalogram, EEG. In comparison, cardiac activity can also be observed by connecting electrodes to the body (Cummings 2014). However, the result of this potential as a function of time is called ECG. Irregularities in brain or heart function result in abnormal EEGs or ECGs. On its surface, the Earth has a negative electric potential. When a person is in direct contact with the ground, for example when walking barefoot, electrons from the earth are conducted towards the body. Interestingly, this direct contact or circulating electrical potential has been said to promote health. Scientists have come to the conclusion that by harvesting enough energy from the body's own sources and potentials, it is possible to develop implants for people suffering from hearing loss and other disorders...