Consciousness and Why We Know Next to Nothing About It

What does it actually mean to be conscious—and how does the brain create experience at all? In this episode, I show you what neuroscience knows and doesn’t know about awareness. I look at how brain networks integrate information, why consciousness can fade during sleep or anesthesia, and why there is still no single agreed-upon explanation. Along the way, we separate solid science from speculation and show how studying consciousness teaches us to think carefully about complex systems, uncertainty, and the limits of human knowledge.

Credits:

NIH – Disorders of consciousness
https://www.ninds.nih.gov/health-information/disorders/disorders-consciousness

Nature Reviews Neuroscience – Neural correlates of consciousness
https://www.nature.com/articles/nrn.2016.22

NIH – Brain networks and awareness
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6341011/

Tononi et al., Nature Reviews Neuroscience – Integrated information theory
https://www.nature.com/articles/nrn.2016.44

NIH – Sleep and consciousness
https://www.nhlbi.nih.gov/health/sleep

New England Journal of Medicine – Disorders of consciousness
https://www.nejm.org/doi/full/10.1056/NEJMra1607615

Stanford Neurosciences Institute – The hard problem of consciousness
https://neuroscience.stanford.edu/news/what-hard-problem-consciousness

Nature – What we don’t know about consciousness
https://www.nature.com/articles/d41586-019-02207-1

NIH – Effects of sleep deprivation on cognition
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5449130/

Nature Reviews Neuroscience – Predictive processing
https://www.nature.com/articles/nrn.2018.12