Scientists

Speakers

Milene Bonte

Speaker at

Neuroimaging of the reading brain 

15:15 - 17:00 16th October, 2022 

Milene Bonte

Maastricht Brain Imaging Center, Maastricht University, Netherlands

Milene Bonte

Speaker at

Neuroimaging of the reading brain 

15:15 - 17:00 16th October, 2022 

Symposium Description

Reading is one of the most important skills acquired during the first years of schooling and induces significant changes in the brain, especially in the spoken and written language networks. For the majority of children, learning how to read is quite effortless, but around 10% show persistent difficulties in learning to read (i.e., dyslexia). This symposium will focus on the topic of neural underpinnings of both typical reading development and dyslexia, studied using various neuroimaging techniques (e.g., fMRI, EEG, spectroscopy). Our Invited Speaker will discuss the critical period of reading acquisition, when language first becomes available through the visual channel, and describe how the efficient associations between spoken and visual language representations are formed, primarily in the context of integrating letters and speech sounds. The following presentations will focus on the further stages of emerging reading and describe the complex dynamics between growing reading skills and neural reorganisation of the ventral occipitotemporal cortex (VOT). According to the neuronal recycling hypothesis, specialization for reading in this region results from the recycling of cortical structures initially involved in the recognition of other visual categories. However, recent studies suggest that specialized word selective areas of the VOT keep their initial category selectivity, and we will present data supporting the revised model. VOT, crucial for visual word processing, was recently implicated also in spoken language processing, integrating phonological and orthographical representations needed for effective reading acquisition. Here, we will present data from a longitudinal fMRI study showing that multimodal integration in the VOT increases with schooling. Moving towards a better understanding of failed reading acquisition, we will present data verifying the neural noise hypothesis of dyslexia, which suggests that this disorder is a consequence of disturbance in synaptic transmission, particularly between excitatory (glutamate) and inhibitory (GABA) neurotransmitters. 

Talk: "Capturing letter and sound learning in typical and dyslexic readers"

The formation of efficient associations between visual and spoken language representations forms a fundamental step in reading development. Although we have a fairly good understanding of how our brain processes already learnt associations, we know very little about underlying learning processes. In this talk I will discuss how behavioural, EEG and fMRI measures can be used to track neurobehavioral changes during letter and speech sound learning, and how these changes may relate to dyslexia. 

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