Discover how attention disorders are linked to neurological dysfunctions and explore practical exercises to enhance these abilities.
Hello everyone! Welcome to this episode of the "Neuro 1/4h" podcast. Today, we tackle a topic that affects many children, adults, and healthcare professionals: Attention Deficit Hyperactivity Disorder (ADHD). We will explore the neurological foundations of attention and how neural networks influence our ability to stay focused.
To understand attention disorders, it's essential to start with the thalamus, often referred to as the brain's "sensory hub." Think of it as a control tower that receives all sensory information, such as sight, hearing, and touch, before redirecting it to the parts of the cortex responsible for processing.
The connections between the thalamus and the prefrontal cortex, which is responsible for planning and organizing, as well as the parietal cortex, which helps maintain attention, are crucial. However, in individuals with ADHD, these thalamic networks may not function optimally. For instance, hypoactivation of the thalamus can slow down the transmission of signals to the cortex, making it difficult to concentrate on a task.
In ADHD, the thalamus struggles to filter information, leading to a sensation of sensory overload. Sensory systems, such as the tactile, visual, auditory, and vestibular systems, play a key role in maintaining attention. For example, a person may be easily distracted by movement in their visual field.
Stress is an amplifying factor for attention disorders. When we are stressed, our body releases cortisol, a hormone that can diminish our attention and concentration capabilities. This vicious cycle is particularly problematic, as a stressed child at school will be less attentive, which increases their stress and further exacerbates their attention difficulties.
Fortunately, there are ways to break this vicious cycle. Here are some practical exercises you can try to stimulate thalamic networks.
To engage the thalamic networks, ask the person to follow a pen or a ball with their eyes without moving their head. This helps improve coordination between visual inputs and the prefrontal cortex.
Tactile exercises can also be beneficial. For example, applying light pressure to the hands can activate specific brain areas that promote attention.
Diaphragmatic breathing is another effective technique. Inhale through the nose for 4 seconds, hold your breath for 4 seconds, then slowly exhale through the mouth for 6 seconds. Practicing this technique for a few minutes can reduce stress and enhance cognitive availability.
We have seen how attention disorders are linked to dysfunctions in thalamic networks, exacerbated by stress and sensory overload. The practical exercises we explored can help stimulate these networks and improve attentional abilities. I encourage you to practice these exercises daily to promote brain plasticity and enhance your skills in the long term.
Next week, we will discuss another topic. In the meantime, feel free to ask us your questions on Instagram, YouTube, or Facebook. See you soon!
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