Mystery spot how does it work




















That's not just a joke. People do tend to see inclines as being tilted up more than they seem as tilted down. Researchers at the University of Padova and the University of Pavia found that it's relatively easy to make people see something as uphill, and hard to make them see it as downhill.

They created a fake landscape out of angled boards. When the middle board was angled slightly downhill, and the boards around it were angled steeply downhill, most people they asked saw the middle board as going uphill. However, when they reversed the experiment, and showed people a slightly uphill stretch between two steeply uphill boards, it was seen as level, and not downhill. When the experimenters went on to test a horizontal board between two downhill stretches it was seen as uphill.

When they tested a downhill segment between two uphill boards, it looked level. In other words, there wasn't anything they could do to make that middle section look downhill to anyone.

And these were just boards. Gravity hills make use of the entire landscape. Often referred to as the sixth sense, proprioception is an unconscious aspect of the sensory system that provides information essential to movement. Far from spoiling the fun, Bridgeman said understanding the phenomenon adds to the enjoyment of a visit to the Mystery Spot. In the study, seven subjects pushed the pendulum away from vertical in both directions and were asked to judge the required effort on a 1 - 10 scale, with 1 described as "effortless" and 10 "immovable.

He conducted the studies with colleague Arthur Shimamura, also a psychology professor. Everything is tilted. You can't look outside and get a horizon, so you think that what you see is right. It's very compelling," said Prinzmetal, an expert on perception who has been to the Mystery Spot a dozen times. Although he has studied these illusions, he said his visual perceptions still are distorted when he goes into the house, which is tilted at a degree angle from the ground.

It doesn't take a scientist to know that cockeyed rooms affect perception. If floors are slanted, for instance, people will hang pictures on a slant.

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