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Neurophysiology of synesthesia.

Edward Hubbard 1, *
* Corresponding author
Abstract : Synesthesia is an experience in which stimulation in one sensory or cognitive stream leads to associated experiences in a second, unstimulated stream. Although synesthesia is often referred to as a "neurological condition," it is not listed in the DSM IV or the ICD classifications, as it generally does not interfere with normal daily functioning. However, its high prevalence rate (one in 23) means that synesthesia may be reported by patients who present with other psychiatric symptoms. In this review, I focus on recent research examining the neural basis of the two most intensively studied forms of synesthesia, grapheme --> color synesthesia and tone --> color synesthesia. These data suggest that these forms of synesthesia are elicited through anomalous activation of color-selective areas, perhaps in concert with hyperbinding mediated by the parietal cortex. I then turn to questions for future research and the implications of these models for other forms of synesthesia.
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Contributor : Edward Hubbard <>
Submitted on : Friday, August 10, 2007 - 4:04:43 PM
Last modification on : Wednesday, October 14, 2020 - 4:09:56 AM
Long-term archiving on: : Thursday, April 8, 2010 - 6:30:32 PM


  • HAL Id : inserm-00150599, version 1
  • PUBMED : 17521514



Edward Hubbard. Neurophysiology of synesthesia.. Current Psychiatry Reports, Current Medicine Group, 2007, 9 (3), pp.193-199. ⟨inserm-00150599⟩



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