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If you had to have a prosthetic hand,
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, would you want it to look like a real hand? Or would you prefer a gleaming metallic number, something that doesn’t even try to look human?
A new study looks at one of the issues that prosthetic designers and wearers face in making this decision: the creepy factor. People tend to get creeped out by robots or prosthetic devicesthat look almost,
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, but not quite, human. So Ellen Poliakoff and colleagues at the University of Manchester in England had people rate the eeriness of various prosthetic hands.
Forty-three volunteers looked at photographs of prosthetic and real hands. They rated both how humanlike (realistic) the hands were and how eerie they were, defined as “mysterious,
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, strange,
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, or unexpected as to send a chill up the spine.” Real human hands were rated both the most humanlike and the least eerie (a good thing for humans). Metal hands that were clearly mechanical were rated the least humanlike, but less eerie overall than prosthetic hands made to look like real hands,
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, the team reports in the latest issue of Perception,
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.
[img]/sites/default/files/images/gt_chart_eerie[/img]The realistic prosthetics,
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, like the rubber hand shown above, fell into

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