#10 — Global Workspace Theory (GWT) - Brain Aspects and Evidence w/ Dr Jay Giedd | On Consciousness

"All models are wrong, but some are useful." And I think ultimately that's the test of a construct like Global Workspace Theory - does it lead us to greater knowledge? Does it suggest areas of research? Does it make predictions that we can test? And that's why I think Global Workspace Theory has stood the test of time. It has succeeded on all of those fronts."

- Dr. Jay Giedd, Chair of child psychiatry at Rady Children's Hospital - San Diego and director of child and adolescent psychiatry, professor of psychiatry at UCSD School of Medicine, and professor in the Dept of Population, Family and Reproductive Health at Johns Hopkins Bloomberg School of Public Health.

EPISODE 10: Roundtable Part Three - Global Workspace Theory - Brain Aspects and Evidence with Dr. Jay Giedd

In the third part of their roundtable talk, neuroscientist David Edelman, Bernard Baars, originator of the global workspace theory and global workspace dynamics, and developmental neuropsychiatrist Jay Giedd consider underlying neural processes and anatomical features of Global Workspace Theory and continue on their journey to unravel the complexities surrounding conscious experiences.

How does consciousness come together in the brain? How does memory figure into conscious experience? Knowing how we acquire coherent perceptual insights about the world and then commit those insights to memory, can we tune the learning process to optimize the acquisition of new skills?

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Talking Points

• 00:00 – Intro by David Edelman.
• 02:09 – David Edelman prompts Baars to summarize the key points of the Global Workspace Theory.
• 07:41 – Has Global Workspace Theory been interpreted correctly by scientists? What did people get right and wrong about it?
• 09:11 – Baars argues against the idea that consciousness is a byproduct of human biology and that instead the two are interconnected.
• 11:09 – Jay Giedd on how Global Workspace Theory served as a great standing ground for research in the field of consciousness.
• 12:41 - The trio continue the conversation by discussing the virtually limitless potential of the human brain to learn novel information.
• 15:36 - Jay Giedd discusses how some human skills are diminishing with the advancement of technology.
• 18:02 - Edelman and Giedd engage in the process of defining consciousness and ponder upon the notion of what is necessary to create a conscious experience.
• 21:26 - Edelman asks Baars to explain from the standpoint of Global Workspace Theory, which mammalian brain areas are involved in the conscious process.
• 26:24 - Baars, Giedd, and Edelman discuss the limitations of brain imaging technology.

 

Summary of the Conversation

How does consciousness come together in the brain? How does memory figure into conscious experience? Knowing how we acquire coherent perceptual insights about the world and then commit those insights to memory, can we tune the learning process to optimize the acquisition of new skills?  

In this engrossing episode of ‘On Consciousness,' Bernard Baars, David Edelman, and developmental neuropsychiatrist Jay Giedd consider Global Workspace Theory (GWT) and its underlying neural processes and anatomical features, as well as the development of the imaging technology which has afforded a detailed view of brain activity in near-real time that appears to support GWT.

To begin the discussion,