Sensory Systems | Cognitive Neuroscience
The phenomenon of synesthesia and its occurrence level: between grapheme-color and colored-hearing (auditory-visual)
JuHyun Lee, Katsuaki Sakata*
*Corresponding author: Katsuaki Sakata
Joshibi University of Art and Design, Tokyo, Japan
F1000Posters 2011, 2: 1535 (poster) [English]
Poster [16.89 MB]
European Conference on Visual Perception 2011, 28 Aug - 1 Sep 2011, 544
European Conference on Visual Perception
Although it is still unclear at which stages of sensory-perceptual processing synesthesia occurs, relevant studies are underway in various fields. Using common synesthetic colors, this study aimed to identify at which level of sensory-perceptual processing synesthesia occurs, comparing synesthesia types with different sensory aspects.
From our results, we can conclude that synesthesia may be a phenomenon produced by an interaction between color perception and other perception in multilevel processing levels. Our results reveal that grapheme-colored synesthesia is strongly influenced by a low level of letter perception, such as letter shape perception, rather than high level perception. In colored-hearing synesthesia, a perception of music, rather than recognition of physical aspects of sound stimuli, has a stronger influence on synesthesia, and inferring that higher level perceptional factors are involved. Since grapheme-colored synesthesia is considered a projector, and colored-hearing synesthesia is considered an associator, there is potential for differentiation within the level interactions produced. In other types of synesthesia experienced with a different sensory modality, multi-phase interactions were also noted.
No relevant competing interests disclosed.
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