Â­TheÂ­ three most basic units in electricity are voltage (V), current (I, uppercase i) and resistance (r). Voltage is measured in volts, current is measured in amps and resistance is measured in ohms. A neat analogy to help understand these terms is a system of plumbing pipes. The voltage is equivalent to the water pressure, the current is equivalent to the flow rate, and the resistance is like the pipe size. How Power Grids Works.
Biofeedback is a method that uses the mind to control a body function that the body normally regulates automatically, such as skin temperature, muscle tension, heart rate, or blood pressure. When you are first learning biofeedback, you will have sensors attached to your body and to a monitoring device.
Biofeedback sessions are typically done in a therapist's office, but there are computer programs that connect the biofeedback sensor to your own computer. A biofeedback therapist helps you practice relaxation exercises, which you fine-tune to control different body functions.esearchers aren't exactly sure how or why biofeedback works. They do know that biofeedback promotes relaxation, which can help relieve a number of conditions that are related to stress. During a biofeedback session, electrodes are attached to your skin. Finger sensors can also be used.