Angular Gyrus — Function, Location & Quiz

The angular gyrus sits at a crossroads rather than belonging to one tidy faculty. Visual words, language meaning, number knowledge and perspective-taking all recruit this association territory, which is why the label “language area” alone undersells it.

Its clinical signature also separates it from nearby Wernicke territory. Dominant angular gyrus damage can impair reading, writing, arithmetic, finger knowledge and left-right orientation—a convergence failure rather than simply fluent aphasia.

Test this anatomy in the Brodmann Areas Quiz or open the interactive 3D brain model.

Location and anatomical map

Reading, arithmetic, spatial cognition, semantic processing.

Atlas category: cortical. Brodmann areas or landmark: BA 39.

Functions

  • Reading and literacy — converting visual words to meaning
  • Arithmetic and number processing
  • Semantic integration — combining meaning across modalities
  • Theory of mind and mentalizing
  • Default mode network node

Pathways and connections

  • Angular gyrus ↔ Visual cortex (reading)
  • Angular gyrus ↔ Wernicke's area (meaning)
  • Angular gyrus ↔ PCC, mPFC (default mode network)

Clinical relevance

  • Gerstmann syndrome (left angular gyrus): agraphia + acalculia + finger agnosia + left-right confusion
  • Alexia with agraphia (can't read or write — vs. pure alexia which spares writing)
  • Stimulation can trigger out-of-body experiences (Blanke, 2002)

Key facts

  • Geschwind: angular gyrus = 'association area of association areas'
  • Dehaene: angular gyrus involved in exact arithmetic (language-dependent)
  • Part of the temporo-parietal junction (TPJ) — theory of mind, perspective-taking

Exam tip

Angular gyrus = Gerstmann syndrome (4 symptoms). It's where reading, math, and meaning converge. Left lateralized for language functions.

Common questions

What does the angular gyrus do?

It contributes to reading, arithmetic, semantic integration, theory of mind and default-mode processing by combining information across sensory and conceptual systems.

Where is the angular gyrus located?

It is part of the inferior parietal lobule near the temporoparietal junction and corresponds mainly to Brodmann area 39.

Which syndrome is linked to the angular gyrus?

A left angular gyrus lesion is classically associated with Gerstmann syndrome: agraphia, acalculia, finger agnosia and left-right confusion.