| 21. | This variability was first noticed early in synesthesia research.
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| 22. | There are at least 80 different types of synesthesia.
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| 23. | Thus, synesthesia may be fundamentally a semantic phenomenon.
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| 24. | The same applies to synesthesia and the " sensus communis ".
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| 25. | Her recent work concerns synesthesia, savant syndrome, blindsight and perceptual reports.
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| 26. | It has been compared with auditory-tactile synesthesia.
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| 27. | Studies have looked further into determining whether amputees actually experience mirror touch synesthesia.
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| 28. | There are three main theories for the presence of mirror-touch synesthesia.
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| 29. | It is suggested that mirror touch synesthesia occurs when this threshold is exceeded.
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| 30. | Most instances of mirror touch synesthesia include specular correspondence.
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