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How adding touch to VR can lead to an “uncanny valley” of sensations—and what we can do about it.
We can all remember the crisply beveled edges of our cheery-yellow No. 2 pencil, the cool, smooth feel of a chalk-powdered blackboard, the gritty red bricks of the schoolhouse walls. Surely that all wasn’t just an illusion?
No, of course not.
But—as it turns out—it kind of is.
The sense of touch (and indeed, all of our senses) is more or less illusory because no sensation stands alone. Stretch out your hands and snap your fingers. This, of course, feels very real. But you’re seeing your fingers, hearing your fingers, and feeling your fingers—and all of these sensations fully correspond.
Now, what if they didn’t?
Virtual Reality (VR) is a great tool for revealing this strange and otherworldly foundation of our everyday sensory perceptions. Sneaky (but, of course, highly ethical) experimentalists such as ourselves can render a completely computer-generated world. If we hand you a pair of controllers that can vibrate on command, we can play tricks.
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Source: scientific american