Sounds of the Cosmos with Kim Arcand
Neil deGrasse Tyson and Chuck Nice host a Cosmic Queries episode with visualization scientist Kim Arcand, who works on the Chandra X-ray Observatory, to explore how data sonification, 3D modeling, and other multimodal techniques reveal the high‑energy universe. They discuss Chandra's role among NASA's "great observatories", how X-ray data are converted into images and sounds, accessibility for blind and low‑vision communities, and specific phenomena such as black holes, pulsars, galaxy clusters, and Eta Carinae. Listener questions prompt conversations about color mapping, engineering tradeoffs in X‑ray telescope design, VR for astronaut training, deep fields, and Kim's book "Why Space Will Freak You Out."
Essentials: How Your Brain Functions & Interprets the World | Dr. David Berson
Andrew Huberman speaks with neuroscientist David Burson about how the nervous system creates perception, focusing on vision, color processing, circadian regulation, balance, and movement control. They explain how retinal circuits, melanopsin-containing ganglion cells, the vestibular system, cerebellum, midbrain, basal ganglia, and cortex interact to stabilize our view of the world and guide behavior. The conversation concludes with a striking example of cortical plasticity in a blind Braille reader whose visual cortex had been repurposed for touch.
Most Replayed Moment: Can Eye Movements Heal Trauma? Bessel Van Der Kolk Explains EMDR Therapy!
The conversation explores how common trauma is, how it affects brain function, and how eye movement desensitization and reprocessing (EMDR) can change traumatic responses. The guest explains specific brain regions involved in danger signaling, body awareness, and time perception, showing how trauma leads to chronic fear, loss of perspective, and reliving rather than remembering events. They then discuss EMDR's mechanisms, research evidence, and demonstrate a brief EMDR-style exercise that quickly reduces the host's emotional activation around a recent unpleasant experience.