![]() A secondary question raised to complement the “how” part of the developmental process of synesthesia is the “why”-there an underlying evolutionary benefit for not being synesthetic, and what does this say about how much of outer reality is useful for humans to be able to perceive? That will be left to the reader to consider after presentation of the brain-based evidence of the mechanisms of synesthesia, but is enlightening to keep in the back of the mind. My main goal is to explore what phenomena are occurring in the synesthetic brain that result in the synesthetic experience, and what this cause can tell us about the mechanisms of perception in general using synesthesia as a window into how the brain processes all types of information and stimuli. Because much of the research on synesthesia is going on presently and many theories are still being challenged, I am using this paper to explore the implications of research on synesthesia, not necessarily certain conclusions that can be drawn. This could be manifested as certain letters evoking colors, sounds having tastes, and so on. Synesthesia, by consensus definition, is when the presentation of a particular sensory stimulus elicits a perception in a second sensory modality without direct triggering of this second modality (1). Synesthetes have described hearing a certain musical note as a conical shape, tasting the name “Richard” as a warm, melting chocolate bar, seeing the sound of a woman’s voice as a thin sheet of metal, and hearing a cricket’s chirp as white. Though perhaps not the most scientific or accurate account of synesthesia, this quote provides a slight intuition to the nonsynesthete of what it might be like to have the condition. Once he tasted some chamomile tea and sent it back, saying only: “The stuff tastes of window.” Both she and the servants were surprised because they had never heard of anyone who had drunk oiled window, but when they tried the tea in an effort to understand, they understood: it did taste of window. It can also occur with one's own speech and/or internal dialogue.Share on Twitter Share on Facebook Share on Email ![]() Ticker Tape Synesthesia consists of automatically visualizing written words in the form of subtitles when hearing others speak. ![]() Phoneme-Color Synesthesia is a form of synesthesia similar to grapheme-color synesthesia, but it is from the sound of the word instead of its written form or symbol. Related Forms of Synesthesia Phoneme-Color Synesthesia Voice-Color is when the sound of others speaking or singing can trigger very specific visual concurrents for some synesthetes. General Sounds-Vision is when a general or ambient sounds can induce visual synesthesia, triggering concurrents such as color, shape, texture, spatial position or movement. Key Signature-Color is a type of synesthesia is when the key of a song or piece of music determines the color perceived as a synesthesia concurrent. Song-Color and Music Genre-Color is when someone with auditory-visual synesthesia receives their color impressions from individual sounds, notes/chords or timbre of instruments, but for others it is triggered by a much wider and more general music concept. Timbre-Color and Timbre-Shape is a type of synesthesia when the inducer is a quality of sound made by each particular musical instrument and the possible concurrents are color, shape, texture, size, spatial position and movement.Ĭhromesthesia is a general name given to any type of synesthesia when the inducer is sound or music and the concurrent is color. Tone-Color is a type of synesthesia in which hearing each individual musical note or categorical difference in pitch triggers a visual perception of color, or is automatically associated with a particular color.Ĭhord-Color is when listening to or playing music, each chord is automatically associated with a color or a combination of colors. Types of Auditory-Visual Synesthesia Tone-Color
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