Essay on Commonality of Synesthesia Induced by Serotonin

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The study of synesthesia has grown exponentially over the past few decades and as a result there is some level of ambiguity as to the scope of what defines it. Gail Martino and Lawrence Mark propose that synesthesia can be categorized into strong or weak. The former refers to those who experience “a vivid image in one sensory in response to stimulation in another”, whereas the latter is characterized as “cross-sensory correspondence[s] expressed through language, perceptual similarity and perceptual interactions during information processing” (Martino and Marks, 2001). This view implies that even the subtlest forms of cross-modal interactions that take place in the individual, albeit associating certain sounds to sight, deserve some …show more content…
The study of synesthesia has grown exponentially over the past few decades and as a result there is some level of ambiguity as to the scope of what defines it. Gail Martino and Lawrence Mark propose that synesthesia can be categorized into strong or weak. The former refers to those who experience “a vivid image in one sensory in response to stimulation in another”, whereas the latter is characterized as “cross-sensory correspondence[s] expressed through language, perceptual similarity and perceptual interactions during information processing” (Martino and Marks, 2001). This view implies that even the subtlest forms of cross-modal interactions that take place in the individual, albeit associating certain sounds to sight, deserve some credibility as being a form of synesthesia. Such a wide scope implies that far more people can experience some type of synesthesia even if its not necessarily the more exaggerated and rare forms like lexical-gustatory and grapheme color.
These rare forms of synesthesia, typically referred to as developmental, tend to persist “since birth or early childhood and remain relatively stable and systematic over time” (Brogaard 2013). However, recent evidence suggests that synesthesia is not solely developmental in the alleged “4% of the general population” (Brang and Ramachandran 2007). For the purpose of this paper I will look at studies in which serotonin appears to play a key role across not only developmental synesthesia, but also drug-induced and

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