People who report such experiences are known as synesthetes.

Synesthetic perceptions are spatially extended, meaning they often have a sense of 'location.' For example, synesthetes speak of 'looking at' or 'going to' a particular place to attend to the experience.

Synesthetic percepts are consistent and generic (i.e., simple rather than pictorial).

Synesthesia is involuntary and automatic.

Neurologist Richard Cytowic identifies the following diagnostic criteria of synesthesia: Yet another recently identified type, visual motion sound synesthesia, involves hearing sounds in response to visual motion and flicker. In spatial-sequence, or number form synesthesia, numbers, months of the year, and/or days of the week elicit precise locations in space (for example, 1970 may be 'farther away' than 1980), or may have a (three-dimensional) view of a year as a map. In one common form of synesthesia, known as grapheme color synesthesia or color-graphemic synesthesia, letters or numbers are perceived as inherently colored, while in ordinal linguistic personification, numbers, days of the week and months of the year evoke personalities.

Over 60 types of synesthesia have been reported.

Picture illistrates how someone with synesthesia might perceive certain letters and numbers in colors. Now, however, modern behavioral, brain-imaging and molecular genetic tools hold exciting promise for uncovering the mechanisms that drive synesthesia and researchers hope for better understanding how the brain normally organizes perception and cognition. But until recently, researchers could only speculate about the causes of synesthesia. The condition runs in families and is more common among women than men, researchers now know. Studies have confirmed that the phenomenon is biological, automatic and apparently unlearned, distinct from both hallucination and metaphor. Synesthesia is also sometimes reported by individuals under the influence of psychedelic drugs, after a stroke, during a temporal lobe epilepsy seizure, or as a result of blindness or deafness.ДЇor scientists, synesthesia presents an intriguing problem. Synesthesia runs strongly in families, but the precise mode of inheritance has yet to be ascertained. There are probably many people who have the condition but do not realize what it is. Cytowic.Д®stimates for the number of people with synesthesia range from 1 in 200 to 1 in 100,000. Synesthetic elicitations are durable, consistent, and discrete, as noted by Dr. The elicited synesthetic experience does not replace the normal experience but instead always adds to it. An example of this would be the taste of lemon visually evoking the color blue. Synesthesia literally refers to the fact that in some animals, a stimulus in one sense modality involuntarily elicits a sensation/experience in another sense modality. Some synesthetes often report that they were unaware their experiences were unusual until they realized other people did not have them, while others report feeling as if they had been keeping a secret their entire lives. Associative Synesthesia: Associators will feel a very strong and involuntary connection between the stimulus and the sense that it triggers.Projecting Synesthesia: People who project will see actual colors, forms, or shapes when stimulated, as is commonly accepted as synesthesia.Delirium Symptoms, Facts and General Information.The Human Brain: Adaptable Decision Making.Scientists Map Brains of Blind to Solve Mysteries.

Synthesia disease