Types of Synesthesia?
As for now there are 9 major categories for Synesthesia known to researchers. Those more studied consist of Color Synesthesia, Chromesthesia, Spatial Sequence, Number Form, Auditory-Tactile, Ordinal Linguistic Personification, Misophonia, Mirror-Touch, Lexical-Gustatory. There are more forms not indexed yet with a name/category.
Lets get started from the most “common” types of synesthesia making our way to the most rare.
Known as the most common type it is characterized for the association of a color with a number/letter. I.e. 6 is yellow, Z is blue. It can work in both ways. Color brings the number, number brings the color to the minds-eye.
Is the connection between sound and color. One sound can trigger a color in the minds-eye. The cracking sound of a fire camp can be white.
Spatial Sequence Synesthesia (SSS)
Those with SSS can see sequences of numbers in space. Those that have it usually have an enhanced memory, because the relation of numbers with spaces creates a more detailed picture for recalling events.
Number form is the ability to see numbers in space as part of a mental map or projection, when the synesthete thinks about numbers or involuntary stimuli brings it to action. Check it here for the short video simulation.
This type is known for triggering a sensation in the body when hearing specific sounds.
Ordinal Linguistic Personification
Is a form of synesthesia in which ordered sequences, numbers, days, months or letters are associated with personalities. This is one of the types that wasn’t taken very much into account by the scientific community as of yet.
Is a negative reaction such as anger or repulse to a sound. This is still to be confirmed as being directly connected with synesthesia, therefor its possible that it could be a different neurological field. Results similar to these ones where achieved through experiments (Little Albert) on babies in the 20’s. Not to directly compare the two, but negative reactions to one stimuli may come from trauma induced events rather then connected with synesthesia. Synesthesia for all we know is involuntary.
Is one of the most interesting types of synesthesia. People who have it describe it has feeling someone else’s sensations. Like there as a mimic of senses just by observing someone. I.e. A synesthete looking at someone pinching they’re arm will feel it as well. This induced sensation by observing is for all we know intensely related with the part of the brain that is responsible for empathy. The ones who have it, have an exponential over developed feeling/sensitivity. Check the article where we talk about rare types of Synesthesia.
The example of this type coincides, not by chance, with the title of the documentary that i’ll share with you next. It is defined by the connection between taste and words. Where a name like Derek might trigger the taste of earwax. This is a very rare one, but featured in this next video. Check the article where we talk about rare types of Synesthesia.
For more information about these different types of Synesthesia I strongly recommend watching this insightful BBC documentary now.
Thanks for reading!