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Araneda R, Renier LA, Rombaux P, et al. Cortical Plasticity and Olfactory Function in Early Blindness. Front Syst Neurosci. 2016;10:75doi: 10.3389/fnsys.2016.00075.
Araneda, R., Renier, L. A., Rombaux, P., Cuevas, I., & De Volder, A. G. (2016). Cortical Plasticity and Olfactory Function in Early Blindness. Frontiers in systems neuroscience, 1075. https://doi.org/10.3389/fnsys.2016.00075
Araneda, Rodrigo, et al. "Cortical Plasticity and Olfactory Function in Early Blindness." Frontiers in systems neuroscience vol. 10 (2016): 75. doi: https://doi.org/10.3389/fnsys.2016.00075
Araneda R, Renier LA, Rombaux P, Cuevas I, De Volder AG. Cortical Plasticity and Olfactory Function in Early Blindness. Front Syst Neurosci. 2016 Aug 30;10:75. doi: 10.3389/fnsys.2016.00075. eCollection 2016. PMID: 27625596; PMCID: PMC5003898.
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Front Syst Neurosci. 2016 Aug 30;10:75. doi: 10.3389/fnsys.2016.00075. eCollection 2016.

Cortical Plasticity and Olfactory Function in Early Blindness.

Frontiers in systems neuroscience

Rodrigo Araneda, Laurent A Renier, Philippe Rombaux, Isabel Cuevas, Anne G De Volder

Affiliations

  1. Institute of Neuroscience (IoNS), Université catholique de Louvain Brussels, Belgium.
  2. Institute of Neuroscience (IoNS), Université catholique de LouvainBrussels, Belgium; Department of Otorhinolaryngology, Cliniques Universitaires Saint-LucBrussels, Belgium.
  3. Laboratorio de Neurociencias, Escuela de Kinesiología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso Valparaíso, Chile.

PMID: 27625596 PMCID: PMC5003898 DOI: 10.3389/fnsys.2016.00075

Abstract

Over the last decade, functional brain imaging has provided insight to the maturation processes and has helped elucidate the pathophysiological mechanisms involved in brain plasticity in the absence of vision. In case of congenital blindness, drastic changes occur within the deafferented "visual" cortex that starts receiving and processing non visual inputs, including olfactory stimuli. This functional reorganization of the occipital cortex gives rise to compensatory perceptual and cognitive mechanisms that help blind persons achieve perceptual tasks, leading to superior olfactory abilities in these subjects. This view receives support from psychophysical testing, volumetric measurements and functional brain imaging studies in humans, which are presented here.

Keywords: congenital blindness; cross-modal plasticity; functional neuroimaging; olfaction; olfactory perception; visual deprivation

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