Using optogenetics to stimulate about 20 nerve cells causes mice to perceive nonexistent vertical or horizontal lines.
https://www.sciencenews.org/article/manipulating-nerve-cells-makes-mice-see-something-not-there
July 20th, 2019
https://www.sciencenews.org/article/manipulating-nerve-cells-makes-mice-see-something-not-there