 Another variation of Molyneux’s problem was suggested by Evans (1985). He wondered whether the visual cortex of a patient with congenital blindness could be electrically stimulated in such a way that the patient experiences a pattern of light flashes (phosphenes) in the shape of a square or circle. This question has been investigated experimentally, but the results do not provide a final answer to Molyneux’s question (see Jacomuzzi, Kobau and Bruno 2003 for discussion).