Part 2 Autism and Sensory Processing: Scientific Literature

For today's episode, we expand on Autism and Sensory Processing. We return to the mesencephalon—a brainstem region with superior and inferior colliculi—as a critical hub for sensory integration and attention bias. We cover four scientific articles, starting with Marco et al. (2011), which uses EEGs, MEGs, and fMRIs to reveal autism’s auditory processing inconsistencies (e.g., delayed N100/M100 cortical responses), tactile hypersensitivity from overactive receptors, and visual processing quirks like reduced fusiform gyrus activation for faces. Russo et al. then explore brainstem-level deficits, showing autistic children’s auditory brainstem responses (ABR) to speech syllables like "DA" exhibit poor neural synchrony and phase locking, especially in noise, due to disrupted wave V, A, D, F timing—linking these to language impairments. These findings  ...