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Synesthesia is a neurological condition in which two or more bodily senses are coupled. For example, in a form of synesthesia known as grapheme-color synesthesia, letters or numbers may be perceived as inherently colored. Historically, the most commonly described form of synesthesia (or synesthesia-like mappings) has been between sound and ...
Synesthesia (American English) or Synaesthesia ... was discovered by Russian neuropsychologist Alexander Luria to have a rare fivefold form of synesthesia, ...
The genetic mechanism of synesthesia has long been debated, with researchers previously claiming it was a single X-linked trait due to seemingly higher prevalence in women and no evidence of male-male transmission [1] This is where the only synesthetic parent is male and the male child has synesthesia, [2] [3] meaning that the trait cannot be solely linked to the X chromosome.
Ramachandran was one of the first scientists to theorize that grapheme-color synesthesia arises from a cross-activation between brain regions. [ 55 ] [ 56 ] Ramachandran and his graduate student, Ed Hubbard, conducted research with functional magnetic resonance imaging that found increased activity in the color recognition areas of the brain in ...
Grapheme–color synesthesia or colored grapheme synesthesia is a form of synesthesia in which an individual's perception of numerals and letters is associated with the experience of colors. Like all forms of synesthesia, grapheme–color synesthesia is involuntary, consistent and memorable.
Alternatively, synesthesia may arise through "disinhibited feedback" or a reduction in the amount of inhibition along feedback pathways (Grossenbacher & Lovelace 2001).It is well established that information not only travels from the primary sensory areas to association areas such as the parietal lobe or the limbic system, but also travels back in the opposite direction, from "higher order ...
Because it is a recently discovered memory capability, neuroscientific explanations of hyperthymesia are scarce. McGaugh, who coined the term, provides mostly speculation in "A Case of Unusual Autobiographical Remembering". He suggests that "AJ"'s superior autobiographical memory is largely the result of specific impairments rather than ...
Wednesday Is Indigo Blue: Discovering the Brain of Synesthesia is a 2009 non-fiction book written by Richard Cytowic and David Eagleman documenting the current scientific understanding of synesthesia, a perceptual condition where an experience of one sense (such as sight) causes an automatic and involuntary experience in another sense (such as hearing). [1]