Chromatic Induction in Migraine
Cerdá Company, Xim (Universitat Autònoma de Barcelona. Departament de Ciències de la Computació)
Penacchio, Olivier (University of St. Andrews (Regne Unit))
Otazu Porter, Xavier (Universitat Autònoma de Barcelona. Departament de Ciències de la Computació)

Date:	2021
Abstract:	The human visual system is not a colorimeter. The perceived colour of a region does not only depend on its colour spectrum, but also on the colour spectra and geometric arrangement of neighbouring regions, a phenomenon called chromatic induction. Chromatic induction is thought to be driven by lateral interactions: the activity of a central neuron is modified by stimuli outside its classical receptive field through excitatory-inhibitory mechanisms. As there is growing evidence of an excitation/inhibition imbalance in migraine, we compared chromatic induction in migraine and control groups. As hypothesised, we found a difference in the strength of induction between the two groups, with stronger induction effects in migraine. On the other hand, given the increased prevalence of visual phenomena in migraine with aura, we also hypothesised that the difference between migraine and control would be more important in migraine with aura than in migraine without aura. Our experiments did not support this hypothesis. Taken together, our results suggest a link between excitation/inhibition imbalance and increased induction effects.
Grants:	Agencia Estatal de Investigación DPI2017-89867-C2-1-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-649
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Migraine ; Vision ; Colour ; Colour perception ; Chromatic induction ; Psychophysics
Published in:	Vision, Vol. 5, Num. 3 (August 2021) , art. 37, ISSN 2411-5150

DOI: 10.3390/vision5030037
PMID: 34449758

14 p, 2.7 MB

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