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Tomás and I discuss his research and ideas on how memories are encoded (the engram), the role of forgetting, and the overlapping mechanisms of memory and instinct. Tomás uses otpogenetics and other techniques to label and control neurons involved in learning and memory, and has shown that forgotten memories can be restored by stimulating "engram cells" originally associated with the forgotten memory. This line of research has led Tomás to think forgetting might be a learning mechanism itself, a adaption our brains make based on the predictability and affordances of the environment. His work on engrams has also led Tomás to think our instincts (ingrams) may share the same mechanism of our memories (engrams), and that memories may transition to instincts across generations. We begin by addressing Randy Gallistel's engram ideas from the previous episode: BI 126 Randy Gallistel: Where Is the Engram?

• Ryan Lab.
• Twitter: @TJRyan_77.
• Related papers
  • Engram cell connectivity: an evolving substrate for information storage.
  • Forgetting as a form of adaptive engram cell plasticity.
  • Memory and Instinct as a Continuum of Information Storage in The Cognitive Neurosciences.
  • The Bandwagon by Claude Shannon.

0:00 - Intro