BI 161 Hugo Spiers: Navigation and Spatial Cognition скачать в хорошем качестве

BI 161 Hugo Spiers: Navigation and Spatial Cognition

Patreon for full episodes and Discord community:   / braininspired   Free Video Series: Open Questions in AI and Neuroscience: https://braininspired.co/open/ Apple podcasts: https://itunes.apple.com/us/podcast/b... Spotify: https://open.spotify.com/show/2UZj8c8... Music by: The New Year: http://www.thenewyear.net/ Show notes: https://braininspired.co/podcast/161/ Hugo Spiers runs the Spiers Lab at University College London. In general Hugo is interested in understanding spatial cognition, like navigation, in relation to other processes like planning and goal-related behavior, and how brain areas like the hippocampus and prefrontal cortex coordinate these cognitive functions. So, in this episode, we discuss a range of his research and thoughts around those topics. You may have heard about the studies he's been involved with for years, regarding London taxi drivers and how their hippocampus changes as a result of their grueling efforts to memorize how to best navigate London. We talk about that, we discuss the concept of a schema, which is roughly an abstracted form of knowledge that helps you know how to behave in different environments. Probably the most common example is that we all have a schema for eating at a restaurant, independent of which restaurant we visit, we know about servers, and menus, and so on. Hugo is interested in spatial schemas, for things like navigating a new city you haven't visited. Hugo describes his work using reinforcement learning methods to compare how humans and animals solve navigation tasks. And finally we talk about the video game Hugo has been using to collect vast amount of data related to navigation, to answer questions like how our navigation ability changes over our lifetimes, the different factors that seem to matter more for our navigation skills, and so on. 0:00 - Intro 5:21 - Hugo's background 13:52 - Taxi drivers and hippocampi 26:40 - Comparing humans, rats, and RL agents 35:27 - Clean algorithms, messy mixes 44:40 - Ecologically valid tasks 47:15 - Schemas, gists, cognitive maps 1:00:33 - Episodic vs. semantic and cognitive map vs. schema 1:04:17 -Posterior vs. anterior hippocampus 1:12:37 - Sea Hero Quest 1:20:25 - Navigation abilties based on where you grow up