A graded potential is an important concept in neuroscience and physiology. It refers to the difference in electrical charge between one part of the neuron and another. It is also known as a membrane potential. It is created when ions move across the cell membrane due to the concentration gradient.
The graded potential can vary in size, but when it reaches a certain threshold level, an action potential is generated, which is a much larger electrical signal. This is what causes nerve impulses to travel from one part of the body to another.
Graded potentials are typically measured in millivolts (mV) or microvolts (μV). The magnitude of a graded potential depends on several factors, such as the amount of ions available and the permeability of the cell membrane.
In summary, a Graded Potential is a difference in electrical charge between one part of a neuron and another, which is caused by ion movement due to concentration gradients. It is typically measured in mV or μV, and can vary in size. When it reaches a certain threshold, it can trigger an action potential.