The CompassThe SensesEpisodes Episode guide

Back up to: The Compass

1. The senses: Synaesthesia: When senses merge

   5/5Synaesthesia: We meet the man whose sister tastes of blackcurrant yoghurt
2. The senses: Smell and taste

   4/5‘Everything smelled of rotting flesh, even perfume’: What happens when smell goes wrong?
3. The senses: Hearing

   3/5‘I could hear my eyeballs moving’: How rogue messages pass between our ears and brain
4. The senses: Vision

   2/5How glitches between our eyes and brain cause bewildering, even terrifying, images.
5. The senses: Touch

   1/5When our sensory system goes wrong, we learn how our senses help us understand the world