Differences in early sensory-perceptual processing in synesthesia: A visual evoked potential study

Barnett, Kylie J.; Foxe, John J.; Molholm, Sophie; Kelly, Simon P.; Shalgi, Shani; Mitchell, Kevin J.; Newell, Fiona N.

doi:10.1016/j.neuroimage.2008.07.028

Cited by 99 publications

(124 citation statements)

References 42 publications

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“…(e.g. Barnett et al, 2008;Terhune et al, 2015). We note, however, that while the face composite effect may rely more on low-spatial frequency information (Goffaux & Rossion, 2006) there are likely to be a number of other factors that might contribute to performance differences between the face composite task and CFPT measures.…”

Section: Discussionmentioning

confidence: 79%

“…Prior work has suggested that colour synaesthetes show greater perceptual and cortical responsiveness to high spatial frequency information (e.g. Barnett et al, 2008;Terhune et al, 2015). For example, Barnett and colleagues (2008) report that synaesthetes who experience colour as their evoked sensation show enhanced sensitivity to high spatial frequency Gabor patches that bias parvocellular channels, but not low spatial frequency stimuli processed via magnocellular streams.…”

Section: Experiments 1 Discussionmentioning

confidence: 99%

“…see Ward, 2013 for review), a number of studies have also explored wider characteristics associated with synaesthesia. For instance, synaesthesia has been linked to broader differences in perceptual processing (Yaro & Ward, 2007;Barnett et al, 2008;Banissy, Walsh & Ward., 2009;Banissy et al, 2013;Terhune, Song & Cohen Kadosh, 2015); differences in memory abilities (Rothen, Meier & Ward, 2012); and creativity (Ward, Thompson-Lake, Ely & Kaminski, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Basic sensory processing in synaesthetes has received some attention (e.g. Yaro & Ward, 2007;Barnett et al, 2008;Banissy et al, 2009;Banissy et al, 2013;Terhune et al, 2015), but there is little work examining whether synaesthetes show differences in processing social cues. Studying social perception abilities in synaesthetes can therefore help to constrain our understanding of broader phenotypic manifestations in synaesthesia.…”

Section: Introductionmentioning

confidence: 99%

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Social perception in synaesthesia for colour

McErlean

Susilo

Rezlescu

et al. 2016

Cognitive Neuropsychology

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Synaesthesia is a rare phenomenon in which stimulation in one modality (e.g. audition) evokes a secondary percept not associated with the first (e.g. colour).Although there is a significant body of research investigating the mechanisms underlying synaesthetic experiences, it is only recently that studies have begun to investigate broader traits associated with the condition. Prior work has suggested links between synaesthesia and other neurodevelopmental conditions that are linked to altered social perception abilities. With this in mind, here we sought to examine social perception abilities in grapheme-colour synaesthesia (where achromatic graphemes evoke colour experiences) by examining facial identity and facial emotion perception in grapheme-colour synaesthetes and non-synaesthete controls. Our results indicate that individuals who experience grapheme-colour synaesthesia outperformed controls on tasks involving fine visual discrimination of facial identity and emotion, but not on tasks involving holistic face processing. These findings are discussed in the context of broader perceptual and cognitive traits previously associated with synaesthesia for colour, with the suggestion that performance benefits shown by grapheme-colour synaesthetes on fine visual discrimination of facial identity and emotion may be related to domain-general visual discrimination biases observed in this group.

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Section: Discussionmentioning

confidence: 79%

Section: Experiments 1 Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Social perception in synaesthesia for colour

McErlean

Susilo

Rezlescu

et al. 2016

Cognitive Neuropsychology

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“…There is converging evidence from functional imaging studies, diffusion tensor imaging, and voxelbased morphometry that temporal regions related to processing form and colour and parietal areas related to binding processes are critically involved in (grapheme-colour) synaesthesia (Hubbard et al 2005;; Hubbard, Brang, and Ramachandran 2011;Scholte 2007, 2010;; Weiss and Fink synaesthetes may differ in magno-and parvo-cellular processing (Barnett et al 2008). In addition, a recent study has suggested that synaesthesia is accompanied by globally altered brain network topology (Hänggi et al 2011).…”

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confidence: 99%

Semantic representation of synaesthesia

Meier

2014

THS

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Abstract. Synaesthesia has multifaceted consequences for both subjective experience and cognitive performance. Here, I broach the issue of how synaesthesia is represented in semantic memory. I hypothesize that, for example, in grapheme colour synaesthesia, colour is represented as an additional feature in the semantic network that enables the formation of associations that are not present in nonsynaesthetes. Thus, synaesthesia provokes richer memory representations which enable learning opportunities that are not present in non-synaesthetes, provides additional memory cues, and may trigger creative ideas.

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Enhanced sensory perception in synaesthesia

2009

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Previous findings imply that synaesthetic experience may have consequences for sensory processing of stimuli that do not themselves trigger synaesthesia. For example, synaesthetes who experience colour show enhanced perceptual processing of colour compared to non-synaesthetes. This study aimed to investigate whether enhanced perceptual processing was a core property of synaesthesia by contrasting tactile and colour sensitivity in synaesthetes who experience either colour, touch, or both touch and colour as evoked sensations. For comparison the performance of non-synaesthetic control subjects was also assessed. There was a relationship between the modality of synaesthetic experience and the modality of sensory enhancement. Synaesthetes who experience colour have enhanced colour sensitivity and synaesthetes who experience touch have enhanced tactile sensitivity. These findings suggest the possibility that a hyper-sensitive concurrent perceptual system is a general property of synaesthesia and are discussed in relation to theories of the condition.

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Differences in early sensory-perceptual processing in synesthesia: A visual evoked potential study

Cited by 99 publications

References 42 publications

Social perception in synaesthesia for colour

Social perception in synaesthesia for colour

Semantic representation of synaesthesia

Enhanced sensory perception in synaesthesia

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