Relevant quotation from aforementioned link:
"Many children with ONH have difficulty processing sensory information through some or all of their senses--referred to as sensory processing disorder. They may show sensory defensiveness and delays in learning fine and gross motor skills, which can make reading braille and learning basic daily living skills, like dressing, grooming and personal hygiene, difficult or impossible without additional supports."
I find audio captchas infuriating at times, because I struggle to separate the words from the noise, though they have really improved over the last 3 or 4 years. I remember one night during 2012 or 2013, wasting 2 or 3 hours of my life, just listening to audio captchas. All I wanted was to delete my Facebook account and my girlfriend's Facebook account.