👉 Electroretinography (ERG) is a non-invasive imaging technique used for studying visual function and neurological disorders. It involves the measurement of electrical signals generated by light-sensitive cells in the retina, known as photoreceptors. ERG can be performed using an electrical stimulation device or an external stimulator, which provides a continuous flow of current through the photoreceptor cells. ERG is typically used to assess visual function by measuring changes in electrical activity within the retinal ganglion cells
