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Echolocation in humans found to be more sensitive than thought

• JoeAltmaier 9y ago
  Its clear that we can all detect the presence of solid objects by sound - just hold your palm a few inches from either ear, and you can 'hear' it clearly. The new thing here is, folks make a 'click' (like a bat) and listen for the echoes.
  • planteen 9y ago
    If you shut your eyes and move your hand in front of them, you think you can see the outline of your hand. I used to be a cave trip leader. We'd take people deep in a cave, turn all lights off, and ask them to put their hand in front of their face. They swear they can still see the outline of it. I would then instruct them to put their hand in front of the person next to them. They can't see it. Seeing your own hand is psychological, not physical. I wonder if this palm-to-ear trick is the same way in an anechoic chamber with another person.
    • JoeAltmaier 9y ago
      The palm-to-ear trick works and can be easily shown - have someone else stand behind you and put a hand to your left or right ear. You can always tell which one.