Abstract
Magnetophosphene, a light sensation perceived when a human head or visual system is exposed to an ELF magnetic field with enough intensity, is considered to be a sensation caused by activity of the stimulated retina. Estimation of the current density induced in the retina by a magnetic field is necessary for discussion of the phosphene. Electrophosphene is a similar light sensation perceived upon electrical stimulation to the eye. We calculated the current density distribution over all of the retina in an electrically stimulated human eye, using the finite element method. To discuss the threshold of current density that is required to cause retinal cell activity in a magnetically stimulated human eye, the density is compared with other results calculated under magnetic stimulation.
