Abnormal visual experience during development alters the early stages of visual-tactile integration

Behavioural Brain Research
Ewa Niechwiej-SzwedoW Richard Staines

Abstract

Visual experience during the critical periods in early postnatal life is necessary for the normal development of the visual system. Disruption of visual input during this period results in amblyopia, which is associated with reduced activation of the striate and extrastriate cortices. It is well known that visual input converges with other sensory signals and exerts a significant influence on cortical processing in multiple association areas. Recent work in healthy adults has also shown that task-relevant visual input can modulate neural excitability at very early stages of information processing in the primary somatosensory cortex. Here we used electroencephalography to investigate visual-tactile interactions in adults with abnormal binocular vision due to amblyopia and strabismus. Results showed three main findings. First, in comparison to a visually normal control group, participants with abnormal vision had a significantly lower amplitude of the P50 somatosensory event related potential (ERP) when visual and tactile stimuli were presented concurrently. Second, the amplitude of the P100 somatosensory ERP was significantly greater in participants with abnormal vision. These results indicate that task relevant visual input doe...Continue Reading

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Citations

Aug 28, 2016·European Journal of Paediatric Neurology : EJPN : Official Journal of the European Paediatric Neurology Society·Fatima Yousif IsmailMichael V Johnston
Aug 29, 2016·Restorative Neurology and Neuroscience·Árni KristjánssonRúnar Unnthorsson
Jun 16, 2018·Visual Neuroscience·Michael P Stryker, Siegrid Löwel
Jun 16, 2018·Visual Neuroscience·Lynne Kiorpes, Nigel Daw
Jul 10, 2019·Neural Plasticity·Ewa Niechwiej-SzwedoAgnes M F Wong
Dec 14, 2017··Seong-Woo WooJongseo Park

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