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A comment on We still don’t understand motion sickness. Parent comment

Re:We still don’t understand motion sickness by grenoire on Sunday September 16, 2018 @07:33AM (#17998423)
The act of tickling yourself is a two-way sensory exchange. You feel your fingers and your fingers feel you, whereas with a feather you don't have the latter.
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Re:We still don’t understand motion sickness by thaumasiotes on Sunday September 16, 2018 @12:39PM (#17999752)
By comparison, it's also easy to tickle the roof of your mouth with your own tongue.
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