双辅音字形-颜色联觉（观念联觉）。
Geminate consonant grapheme-colour synaesthesia (ideaesthesia).
作者信息
Weaver Donald F, Hawco Cassandra L A
机构信息
Toronto Western Research Institute, 60 Leonard Avenue, Toronto, ON, M5T 2S8, Canada.
University Health Network, 101 College Street, Toronto, ON, M5G 1 L7, Canada.
出版信息
BMC Neurol. 2015 Jul 15;15:112. doi: 10.1186/s12883-015-0372-7.
BACKGROUND
Synaesthesia is a neurological condition which manifests clinically as an involuntary experience of a sensory or cognitive pathway upon stimulation of a second unrelated sensory or cognitive pathway
CASE PRESENTATION
We report a 55 year old male who presented with a life-long history of grapheme-colour synaesthesia in which the triggering grapheme was the double letter 'll' (a geminate consonant), but not 'l' as a single letter. This patient's synaesthesia was also font specific (becoming more evident with serif fonts) and influenced by migraine headache (being suppressed during the prodrome and aura of a migraine headache)
CONCLUSION
These results suggest that geminate consonants are uniquely processed rather than treated as two individual consonants. Also, the existence of a mechanistic relationship between synesthetic and migrainous events sequence was verified.
背景
联觉是一种神经状况，临床上表现为在刺激第二条不相关的感觉或认知通路时，不由自主地体验到一条感觉或认知通路。
病例报告
我们报告一名55岁男性，他有终身的字母-颜色联觉病史，其中触发字母是双字母“ll”（一个双辅音），而不是单个字母“l”。该患者的联觉也具有字体特异性（在衬线字体中更明显），并受偏头痛影响（在偏头痛的前驱期和先兆期受到抑制）。
结论
这些结果表明，双辅音是被独特处理的，而不是被视为两个单独的辅音。此外，还证实了联觉事件序列与偏头痛事件序列之间存在机制关系。
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