This is a followup to BSP 51 in which UK researcher Seth Grant told us about his work exploring the evolution of the synapse, which is a key structure in both invertebrate and vertebrate nervous systems. In this Grant updates us on some of his latest research. His findings are both surprising and enlightening. Go to http://brainsciencepodcast.com for full show notes and free episode transcripts. All episodes of the Brain Science Podcast are available via our mobile app, which is now available for iOS, Android and Windows 8 devices. The Brain Science Podcast is sponsored by Audible.com and by listener donations.