What Is Synesthesia?
Curated from: livescience.com
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Synesthesia: seeing sounds
It causes the brain to process data in several senses simultaneously. For example, people with synesthesia may hear sounds while seeing them as colourful swirls.
About 1 in 2,000 people experience synesthesia. The condition is more common in artists, writers and musicians. (about 20 to 25 percent of these professions have the condition.)
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Types of synesthesia
According to Psychology Today, over 60 types of synesthesia have been reported. The most common type is grapheme-colour synesthesia - when letters or numbers seem to be coloured on a page or visualised as coloured.
Other types include:
- Smelling certain scents when hearing certain sounds.
- Seeing music as colours.
- Tasting words.
- Feeling certain textures cause certain emotions.
- Feeling that time has a physical characteristic.
- Seeing a particular colour when feeling pain.
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Proposed causes for Synesthesia
- Research by Simon Baron-Cohen suggests that synesthesia results from an overabundance of neural connections.
- Peter Grossenbacher thinks it happens when single-sense areas of the brain get feedback from multisensory regions and not from a usual single-sense area.
- Daphne Maurer proposed that everyone has these connections, but not everyone uses them.
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Synesthesia diagnosis
People with synesthesia often experience the following:
- Involuntarily experience their perceptions
- Have a perception that is the same each time.
- Have a generic perception, such as seeing a shape in response to a specific smell.
- Remember the secondary synesthetic perception better than the primary perception.
- Have emotional reactions linked to their perceptions, such as a pleasurable feeling.
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