A Neuroscientist Explains: where perception ends and hallucination begins

Published: April 2, 2018, 10:19 a.m.

When it comes to perceiving the world around us, how much of it is due to ‘bottom-up’ sensory data and how much comes from the ‘top-down’ predictions we make? Most importantly; how can the delicate dance between the two lead to hallucinations?