We’ve all had that moment when you see or hear something and wonder: am I going crazy? In this episode, TED speakers share their experiences straddling the line between madness and sanity. Neurologist Oliver Sacks explains a peculiar condition called Charles Bonnet syndrome — when people of sound mind experience lucid hallucinations. Law professor Elyn Saks shares stories about her schizophrenic episodes and how she was able to rise above her grave diagnosis. Plus, author Jon Ronson goes psychopath spotting, and wonders who among us is truly completely sane.

Check your local NPR schedule to find out when the show premieres today. Or head to iTunes where the podcast is available now »

Each episode of TED Radio Hour will turn an extraordinary idea inside out, using incredible speakers from the TED stage as a jumping off point. With music and lush soundscapes, each episode takes you on a journey that may well flip your perspective. (Listen to the preview below.) The first two episodes of the 30-part season will be “The Unquiet Mind,” premiering on NPR on March 1, and “Peering Into Space,” debuting on March 8. Podcasts of the show will also be available through iTunes.

Download: 60-sec-2-0.wav

Stay tuned to the TED Blog next week for an interview with Guy Raz, where we’ll share which episodes he’s most excited for this season … and his secret skill.