Brain Science 166 features the return of neuroscientist Stephen Macknik. We talk about his recent work that is focused on developing a new visual prosthesis based on recent discoveries and techniques like optogenetics. This episode is more technical than usual but Dr. Macknik makes the material accessible to all listeners. Links and References: http://macknik.neuralcorrelate.com YouTube video: https://youtu.be/TiA1W1OnU9c Please visit http://brainsciencepodcast.com for  additional references and episode transcripts. Please Visit Our Sponsor: The Great Courses Plus: http://thegreatcoursesplus.com/ginger Announcements:   Brain Science comes out on the 2nd and 4th Friday each month. To win an Amazon gift certificate: post a review of Brain Science in iTunes and send me a screenshot. Learn how you can support Brain Science at http://brainsciencepodcast.com/donations Sign up for the free Brain Science Newsletter to get show notes automatically every month. Check out the free Brain Science Mobile app for iOS, Android, and Windows. (It's a great way to get both new episodes and premium content.) Send email to brainsciencepodcast@gmail.com or post voice feedback at http://speakpipe.com/docartemis. Connect on Social Media: Twitter: @docartemis Facebook page: http://www.facebook.com/brainsciencepodcast Contact Dr. Campbell: Email: brainsciencepodcast@gmail.com Voicemail: http://speakpipe.com/docartemis