Progressive verbal apraxia of reading

Area of Science:

• Neuroscience
• Neurology
• Linguistics

Background:

• Describes a novel neurological syndrome impacting reading abilities.
• Focuses on a case study of a right-handed male with progressive reading difficulties.

Observation:

• Patient presented with isolated impairment in reading words aloud.
• Word comprehension and repetition abilities remained intact.
• Absence of dysarthria or speech apraxia in non-reading tasks was noted.

Findings:

• Neuroimaging revealed atrophy and hypometabolism in the right posterior cerebellum.
• Functional neuroimaging identified these cerebellar areas as part of the language network.
• The syndrome, termed Progressive Verbal Apraxia of Reading, is previously unreported.

Implications:

• Suggests a selective disconnection between visual word recognition and the articulatory system.
• Hypothesizes disruption of multisynaptic cerebello-cortical circuits underlies the syndrome.
• Highlights the cerebellum's role in the complex network of reading aloud.