@. Hubbard, E. Ramachandran, and V. , Neurocognitive Mechanisms of Synesthesia, Neuron, vol.48, issue.3, pp.509-520, 2005.
DOI : 10.1016/j.neuron.2005.10.012

T. Flournoy, Des phénomènes de synopsie [On the phenomena of synopsia]. 1893

@. Simner, J. Hubbard, and E. , Variants of synesthesia interact in cognitive tasks: Evidence for implicit associations and late connectivity in cross-talk theories, Neuroscience, vol.143, issue.3, pp.805-814, 2006.
DOI : 10.1016/j.neuroscience.2006.08.018

X. Seron, M. Pesenti, and M. Noel, Images of numbers, or ???when 98 is upper left and 6 sky blue???, Cognition, vol.44, issue.1-2, pp.159-196, 1992.
DOI : 10.1016/0010-0277(92)90053-K

@. Sagiv, N. Simner, J. Collins, and J. , What is the relationship between synaesthesia and visuo-spatial number forms? Cognition, pp.114-128, 2006.

S. Cohen, J. Harrison, L. Goldstein, and M. Wyke, and compare them with other forms of synesthesia in terms of consistency, automaticity and co-occurrence with other forms of synesthesia (grapheme ? color and lexical ? gustatory synesthesia) They also find that the prevalence of this form of synesthesia is higher than for many of the other, more intensely studied forms Coloured speech perception: Is synaesthesia what happens when modularity breaks down? Perception, Sagiv and colleagues examine visuo-spatial number forms, pp.419-426, 1993.

E. Paulesu, J. Harrison, and S. Baron-cohen, The physiology of coloured hearing A PET activation study of colour-word synaesthesia, Brain, vol.118, issue.3, pp.661-676, 1995.
DOI : 10.1093/brain/118.3.661

J. Nunn, L. Gregory, and M. Brammer, Functional magnetic resonance imaging of synesthesia: activation of V4/V8 by spoken words, Nature Neuroscience, vol.5, issue.4, pp.371-375, 2002.
DOI : 10.1038/nn818

@. Simner, J. Mulvenna, C. Sagiv, and N. , Synaesthesia: The prevalence of atypical cross-modal experiences, Perception, vol.35, issue.8, pp.1024-1033, 2006.
DOI : 10.1068/p5469

S. Cohen, L. Burt, and F. Smith-laittan, In the first study of synesthesia to be carried out using true random sampling, the authors demonstrate a much higher prevalence than previously believed (1 in 23) and that previous baised gender ratios were most likely due to under-reporting by males Synaesthesia: prevalence and familiality. Perception, pp.1073-1079, 1996.

M. Bailey, K. Johnson, J. Baron-cohen, and . Harrison, Synaesthesia: Is a genetic analysis feasible? in Synaesthesia: Classic and contemporary readings, pp.182-207, 1997.

J. Ward and J. Simner, Is synaesthesia an X-linked dominant trait with lethality in males? Perception, pp.611-623, 2005.

S. Day and S. Demographic, JB: A systematic, large scale study of synaesthesia: Implications for the role of early experience in lexical-colour associations, Synesthesia: Perspectives from Cognitive Neuroscience, LC Robertson and N Sagiv, pp.53-84, 2005.

R. Cytowic and . Synesthesia, A Union of the Senses, 1989.

A. Luria, The mind of a mnemonist: A little book about a vast memory, PM: Synesthetic color experiences influence memory, pp.548-552, 1968.

D. Jacome, Volitional Monocular Lilliputian Visual Hallucinations and Synesthesia, European Neurology, vol.41, issue.1, pp.54-56, 1999.
DOI : 10.1159/000008001

V. Ramachandran and E. Hubbard, Synaesthesia: A window into perception, thought and language, Journal of Consciousness Studies, vol.8, issue.12, pp.3-34, 2001.

@. Hubbard, E. Arman, A. Ramachandran, V. Boynton, and G. , Individual Differences among Grapheme-Color Synesthetes: Brain-Behavior Correlations, Neuron, vol.45, issue.6, pp.975-985, 2005.
DOI : 10.1016/j.neuron.2005.02.008
URL : http://doi.org/10.1016/j.neuron.2005.02.008

L. Cohen and S. Dehaene, Specialization within the ventral stream: the case for the visual word form area, NeuroImage, vol.22, issue.1, pp.466-76, 2004.
DOI : 10.1016/j.neuroimage.2003.12.049

A. Wade, A. Brewer, J. Rieger, and B. Wandell, Functional measurements of human ventral occipital cortex: retinotopy and colour, Philosophical Transactions of the Royal Society B: Biological Sciences, vol.357, issue.1424, pp.963-973, 1424.
DOI : 10.1098/rstb.2002.1108

V. Ramachandran and E. Hubbard, Psychophysical investigations into the neural basis of synaesthesia, Proceedings of the Royal Society B: Biological Sciences, vol.268, issue.1470, pp.979-983, 1470.
DOI : 10.1098/rspb.2000.1576

H. Kennedy, A. Batardiere, C. Dehay, P. Barone, . Synaesthesia et al., Implications for developmental neurobiology, in Synaesthesia: Classic and contemporary readings, pp.243-256, 1997.

K. Armel and V. Ramachandran, Acquired synesthesia in retinitis pigmentosa, Neurocase, vol.41, issue.4, pp.293-296, 1999.
DOI : 10.1038/368592b0

P. Grossenbacher, J. Baron-cohen, and . Harrison, Perception and sensory information in synaesthetic experience, in Synaesthesia: Classic and contemporary readings, pp.148-172, 1997.

B. Shanon, Ayahuasca visualizations: A structural typology, Journal of Consciousness Studies, vol.9, issue.2, pp.3-30, 2002.

D. Smilek, M. Dixon, C. Cudahy, and P. Merikle, Synaesthetic Photisms Influence Visual Perception, Journal of Cognitive Neuroscience, vol.7, issue.7, pp.930-936, 2001.
DOI : 10.1038/335311a0
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.8926

K. Myles, M. Dixon, D. Smilek, and P. Merikle, Seeing double: The role of meaning in alphanumeric-colour synaesthesia, Brain and Cognition, vol.53, issue.2, pp.342-347, 2003.
DOI : 10.1016/S0278-2626(03)00139-8

M. Dixon, D. Smilek, P. Duffy, and P. Merikle, The Role of Meaning in Grapheme-Colour Synaesthesia, Cortex, vol.42, issue.2, pp.243-252, 2003.
DOI : 10.1016/S0010-9452(08)70349-6

L. Robertson, Binding, spatial attention and perceptual awareness, Nature Reviews Neuroscience, vol.14, issue.2, pp.93-102, 2003.
DOI : 10.1038/nrn1030
URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3373472

M. @bullet@bullet-esterman, T. Verstynen, R. Ivry, and L. Robertson, Coming Unbound: Disrupting Automatic Integration of Synesthetic Color and Graphemes by Transcranial Magnetic Stimulation of the Right Parietal Lobe, Journal of Cognitive Neuroscience, vol.41, issue.9, pp.1570-1576, 2006.
DOI : 10.1016/j.neuroimage.2005.06.052

M. Dixon, D. Smilek, and P. Merikle, Not all synaesthetes are created equal: Projector versus associator synaesthetes, Cognitive, Affective, & Behavioral Neuroscience, vol.121, issue.3, pp.335-378, 2004.
DOI : 10.3758/CABN.4.3.335

B. Thirion, P. Pinel, and S. Meriaux, Analysis of a large fMRI cohort: Statistical and methodological issues for group analyses Associating colours with people: a case of chromatic-lexical synaesthesia, Neuroimage Cortex, vol.40, issue.375, pp.750-753, 2001.

A. Aleman, G. Rutten, and M. Sitskoorn, Activation of striate cortex in the absence of visual stimulation: an fMRI study of synesthesia, Neuroreport, vol.12, issue.13, pp.2827-2857, 2001.
DOI : 10.1097/00001756-200109170-00015

@. Ward, J. Li, R. Salih, S. Sagiv, and N. , Varieties of grapheme-colour synaesthesia: A new theory of phenomenological and behavioural differences, Consciousness and Cognition, vol.16, issue.4
DOI : 10.1016/j.concog.2006.09.012

J. Sperling, D. Prvulovic, and D. Linden, Neuronal Correlates of Colour-Graphemic Synaesthesia: Afmri Study, This is the first behavioral study to compare two different models of individual differences in grapheme ? color synesthesia, pp.295-303, 2006.
DOI : 10.1016/S0010-9452(08)70355-1

P. Weiss, K. Zilles, and G. Fink, When visual perception causes feeling: Enhanced cross-modal processing in grapheme-color synesthesia, NeuroImage, vol.28, issue.4, pp.859-868, 2005.
DOI : 10.1016/j.neuroimage.2005.06.052

N. Muggleton, E. Tsakanikos, V. Walsh, and J. Ward, Disruption of synaesthesia following TMS of the right posterior parietal cortex, Neuropsychologia, vol.45, issue.7, pp.1582-1585, 2007.
DOI : 10.1016/j.neuropsychologia.2006.11.021

E. Hubbard, M. Piazza, P. Pinel, and S. Dehaene, Interactions between number and space in parietal cortex, Nature Reviews Neuroscience, vol.41, issue.6, pp.435-483, 2005.
DOI : 10.1093/brain/awh500

J. Ward and J. Simner, Lexical-gustatory synaesthesia: linguistic and conceptual factors, Cognition, vol.89, issue.3, pp.237-261, 2003.
DOI : 10.1016/S0010-0277(03)00122-7

E. Hubbard, J. Simner, and J. Ward, Anatomically constrained cross-activation: A Grand Unified Theory of synesthesia?