Researchers challenge textbook ideas of how the brain specifies movement

When you are weighing two possible actions, your brain needs to decide what to do and how to do it. For example, if a book and a cup sit side-by-side on a table, your brain must decide whether you want to read the novel or drink coffee—selecting the action to take. Your brain also needs to figure out if you need to reach 20 degrees one way for the book or 20 degrees the other way for the cup—specifying the action.