Abstract:
:Synaesthesia is often triggered by numbers, although it is conceivable that different aspects of numerical representation are responsible for different variants of synaesthesia. For individuals with "higher synaesthesia" it is assumed that number meaning (or numerosity) is responsible for the elicitation of synaesthetic experiences. This study documents a case study of a synaesthete, TD, who broadly fits this profile. TD reports that the same colours are elicited from physically different representations of number (digits, dice patterns and finger counting) provided that they share the same numerosity. The authenticity of his synaesthesia is established using Stroop-like priming and interference paradigms. Not only does synaesthetic colour interfere with veridical colour judgements, but also veridical colours can interfere with numerosity judgments. This suggests a close bi-directional coupling between numerosity and colour. Together, these findings constrain theories concerning the neural basis of synaesthesia.
journal_name
Neurocasejournal_title
Neurocaseauthors
Ward J,Sagiv Ndoi
10.1080/13554790701300518subject
Has Abstractpub_date
2007-04-01 00:00:00pages
86-93issue
2eissn
1355-4794issn
1465-3656pii
779532915journal_volume
13pub_type
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