What is the McGurk effect?
The McGurk effect is a perceptual phenomenon that demonstrates an interaction between hearing and vision in speech perception. The illusion occurs when the auditory component of one sound is paired with the visual component of another sound, leading to the perception of a third sound.
Harry McGurk (23 February 1936 – 17 April 1998) was a British cognitive psychologist. He is known for his discovery of the McGurk effect, described in a 1976 paper with his research assistant John MacDonald, while he was a senior developmental psychologist at the University of Surrey
What is the phoneme restoration effect?
Phonemic restoration effect is a perceptual phenomenon where under certain conditions, sounds actually missing from a speech signal can be restored by the brain and may appear to be heard.
What is categorical perception in language?
Categorical perception (CP) is the phenomenon by which the categories possessed. by an observer influences the observers' perception. Experimentally, CP is revealed. when an observer's ability to make perceptual discriminations between things is. better when those things belong to different categories
What is meant by the word superiority effect?
In cognitive psychology, the word superiority effect (WSE) refers to the phenomenon that people have better recognition of letters presented within words as compared to isolated letters and to letters presented within nonword (orthographically illegal, unpronounceable letter array) strings.
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"Magnetic Hill" redirects here. For other uses, see Magnetic Hill (disambiguation).
"Mystery hill" redirects here. For other uses, see Mystery Hill (disambiguation).
Water appearing to run uphill at Magnetic Hill in New Brunswick
A gravity hill, also known as a magnetic hill, mystery hill, mystery spot or gravity road, is a place where the layout of the surrounding land produces an optical illusion, making a slight downhill slope appear to be an uphill slope. Thus, a car left out of gear will appear to be rolling uphill against gravity. There are hundreds of recognised gravity hills around the world.
The slope of gravity hills is an optical illusion, although sites are often accompanied by claims that magnetic or supernatural forces are at work. The most important factor contributing to the illusion is a completely or mostly obstructed horizon. Without a horizon, it becomes difficult to judge the slope of a surface, as a reliable reference is missing. Objects one would normally assume to be more or less perpendicular to the ground (such as trees) may actually be leaning, offsetting the visual reference.
The illusion is similar to the Ames room, in which objects can also appear to roll against gravity.
The opposite phenomenon—an uphill road that appears flat—is known in bicycle racing as a "false flat"