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| Hauptseite > Publikationsdatenbank > Implicit interactions between number and space indigit-color synesthesia. > print |
| Hauptseite > Publikationsdatenbank > Implicit interactions between number and space indigit-color synesthesia. > print |
| 001 | 185616 | ||
| 005 | 20210129214703.0 | ||
| 024 | 7 | _ | |a 10.1016/j.cortex.2014.11.001 |2 doi |
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| 037 | _ | _ | |a FZJ-2014-07042 |
| 082 | _ | _ | |a 570 |
| 100 | 1 | _ | |0 P:(DE-Juel1)156353 |a Niessen, Eva |b 0 |e Corresponding Author |
| 245 | _ | _ | |a Implicit interactions between number and space indigit-color synesthesia. |
| 260 | _ | _ | |a Paris |b Elsevier Masson |c 2015 |
| 336 | 7 | _ | |0 PUB:(DE-HGF)16 |2 PUB:(DE-HGF) |a Journal Article |b journal |m journal |s 1418908200_22480 |
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| 520 | _ | _ | |a In digit-color synesthesia, a variant of grapheme-color synesthesia, digits trigger an additional color percept. Recent work on number processing in synesthesia suggests that colors can implicitly elicit numerical representations in digit-color synesthetes implying that synesthesia is bidirectional. Furthermore, morphometric investigations revealed structural differences in the parietal cortex of grapheme-color synesthetes, i.e., in the brain region where interactions between number and space occur in non-synesthetic subjects. Based upon these previous findings, we here examined whether implicitly evoked numerical representations interact with spatial representations in synesthesia in such a way that even a non-numerical, visuo-spatial task (here: line bisection) is modulated, i.e., whether synesthetes exhibit a systematic bisection bias for colored lines.Thirteen digit-color synesthetes were asked to bisect two sets of lines which were colored in their individual synesthetic colors associated with a small or a large digit, respectively. For all colored line stimuli combined, digit-color synesthetes showed – like control subjects (n = 13, matched for age, gender, IQ and handedness) – a pseudo-neglect when bisecting colored lines. Measuring the color-induced change of the bisection bias (i.e., comparing the biases when bisecting lines colored according to a small number vs those lines corresponding to a large number) revealed that only digit-color synesthetes were significantly influenced by line color.The results provide further evidence for the bidirectional nature of synesthesia and support the concept of a mental number line. In addition, they extend previous reports on bidirectionality in synesthesia by showing that even non-numerical, visuo-spatial performance can be modulated by implicit bidirectional processes. |
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| 773 | _ | _ | |0 PERI:(DE-600)2080335-7 |a 10.1016/j.cortex.2014.11.001 |p 225 – 234 |t Cortex |v 64 |x 0010-9452 |y 2015 |
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