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Types of Synesthesia
There are many different types of synesthesia, but they may be categorized as falling into one of two groups: associative synesthesia and projective synesthesia. An associate feels a connection between a stimulus and a sense, while a projector actually sees, hears, feels, smells, or tastes a stimulation. For example, an associator might hear a violin and strongly associate it with the color blue, while a projector might hear a violin and see the color blue projected in space as if it were a physical object.
There are at least 80 known types of synesthesia, here there are a few:
- Chromesthesia: In this common form of synesthesia, sounds and colors are associated with each other. For example, the musical note "D" may correspond to seeing the color green.
- Grapheme-color synesthesia: This is a common form of synesthesia characterized by seeing graphemes (letter or numerals) shaded with a color. Synesthetes don't associate the same colors for a grapheme as each other, although the letter "A" does appear to be red to many individuals.
- Number form: A number form is a mental shape or map of numbers resulting from seeing or thinking about numbers.
- Lexical-gustatory synesthesia: This a rare type of synesthesia in which hearing a word results in tasting a flavor. For example, a person's name might taste like chocolate.
- Mirror-touch synesthesia: While rare, mirror-touch synesthesia is noteworthy because it can be disruptive to a synesthete's life. In this form of synesthesia, an individual feels the same sensation in response to a stimulus as another person. For example, seeing a person being tapped on the shoulder would cause the synesthete to feel a tap on the shoulder too.
- olfactory-visual synesthesia: when the synesthete smells an odor, they perceive it as inherently colored.
- sound-emotion synesthesia
- pain-color synesthesia: Each type of pain produced its individual and invariable color, for instance: Hollow pain, blue color; sore pain, red color; deep headache, vivid scarlet; superficial headache, white color; shooting neuralgic pain, white color.
- personality-color synesthesia (auras)
- time unit- color synesthesia (for example Monday could be red and January could be yellow)
- ordinal linguistic personification synesthesia: letters have emotional valences , as well as a sex and personality
Who has synesthesia?
More women have synesthesia than men. Some research suggests the incidence of synesthesia may be higher in people with autism and in left-handed people. Whether or not there is a genetic component to developing this form of perception is hotly debated.
Sources:
https://www.thoughtco.com/synesthesia-definition-and-types-4153376
https://www.cogneurosociety.org/synesthesia_smell_russell/
https://www.google.com/amp/s/www.psychologytoday.com/us/blog/the-superhuman-mind/201404/colored-pain%3famp
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4286234/
https://fms.cmsvr.com/fmi/webd/Food_Plants_World
This guy is my new hero. I LOVE learning about native food plants that just grow everywhere without human help.
The database is a little clunky to use (especially on a phone), but still loads of excellent information.
Here’s their website - Food Plant Solutions - and they can use volunteers! And $ of course. What they really need help with is connecting with NGOs/groups on the ground already working in countries, to get them access to the database. They also need help from formally trained agronomists, people good with website stuff, and people good at marketing / getting the word out about their project.
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