| He said he had determined three decades ago that all prefigurative art consisted entirely of phosphene motifs. |
| As such, is it unknown if the phosphene production was as a result of stimulation of the occipital cortex or direct stimulation of the retina. |
| More research was conducted using different magnetic stimulators constructed to study phosphene production. |
| When you put an array of electrodes on the visual cortex of the brain, each electrode produces a small spot of light called a phosphene. |
