Acalculia from a right hemisphere lesion dealing with "where" in multiplication procedures

Area of Science:

• Neuroscience
• Cognitive Psychology
• Mathematics Education

Background:

• Right hemisphere damage can impact visuospatial processing.
• Multi-digit multiplication requires complex spatial organization.

Observation:

• A patient with right hemisphere damage exhibited specific errors in multiplication.
• Error analysis revealed spatial deficits unique to multiplication procedures.

Findings:

• The patient's errors suggest a difficulty utilizing a visuospatial store for multiplication layouts.
• A lack of a specific spatial schema for multiplication, not general spatial or neglect deficits, explains the failure.

Implications:

• Highlights the role of specialized visuospatial schemas in complex calculations.
• Suggests targeted interventions for patients with right hemisphere damage struggling with mathematical procedures.