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From ExtremeTech:
Researchers from Duke University
have given a rat the ability to feel infrared light. Outfitted with
with a head-mounted sensor and stimulating electrodes placed in the
touch area of its cortex, the rat learned to navigate to a reward when
it was tipped off with the otherwise invisible light. The Duke lab is
well known for inventing some of the first brain-computer interfaces
(BCIs), particularly those designs that have later led to successful use
in humans. To understand the method to this new rodent madness, we need
to understand a bit about Miguel Nicolelis, the man behind all of this.
Anyone who has read Miguel Nicolelis' book, Beyond Boundaries, knows that he has two loves - his Brazilian hinterland, and soccer. In a grand and self-prescribed coup de maître,
Nicolelis has announced that the opening kickoff to the 2014 World Cup
in Brazil will be done by a young paraplegic wearing his full body
exoskeleton under total control of the wearer's mind. The outstanding
problem in achieving this new urgent feat is how to provide the wearer
with feedback from exoskeletal position and velocity sensors. Nicolelis
realized that applying these hard metrics in a tactile fashion to the
wearer's body is not going to cut it if you are a paraplegic - if you
can't feel your body, you are probably not going to feel stimulation.
Even for a normal person, or one with some remaining limb, the
peripheral nerves and their natural proprioceptive (stretch and
position) sensors do not have anywhere near the same capacity as the
central nervous system for reorganizing and or optimally representing
new kinds of information.
Read the whole article
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