Congenital central hypoventilation syndrome (CCHS) is a rare disorder of autonomic and respiratory regulation that alters oxygen delivery to the brain. CCHS patients are at risk for broad neurocognitive deficits. Patients retain ventilatory activity when awake through a respiratory-related cortical network but the need to mobilise cortical resources to breathe lead to breathing-cognition interferences during cognitive tasks. The purpose of this study is to assess the relationship between breathing pattern and attention in CCHS children