Fusiform Gyrus — Function, Location & Quiz

The fusiform gyrus is best known for face-selective responses, but it is better understood as high-resolution visual expertise territory along the ventral surface. Right-sided regions are emphasized in face identity, while left fusiform cortex includes the visual word-form system used in fluent reading.

This lateralization prevents two neighbouring syndromes from being confused. Fusiform damage can produce prosopagnosia when face identity fails, or pure alexia after left-sided injury when reading fails despite preserved writing.

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

Location and anatomical map

Face recognition, word recognition, color processing.

Atlas category: cortical. Brodmann areas or landmark: BA 37 (fusiform face area — FFA).

Functions

  • Face perception and identity recognition
  • Expert-level visual categorization (cars for experts, birds for birders)
  • Visual word form processing (left fusiform — VWFA)
  • Fine-grained within-category discrimination

Pathways and connections

  • V1 → V2 → V4 → Fusiform (ventral stream)
  • Fusiform → Amygdala (emotional face processing)
  • Fusiform → Superior temporal sulcus (dynamic face features — gaze, expression)

Clinical relevance

  • Prosopagnosia — inability to recognize faces (can be acquired or congenital)
  • Patient DF (Goodale & Milner) — ventral stream damage but preserved dorsal stream
  • Left fusiform damage → pure alexia (can't read but can write)

Key facts

  • Kanwisher et al. (1997): FFA responds more to faces than any other category
  • Debate: face-specific module vs. expertise hypothesis (Gauthier: Greebles)
  • FFA shows N170 ERP component — peaks ~170ms after face onset
  • Autistic individuals show reduced FFA activation for faces

Exam tip

FFA = faces. PPA (parahippocampal place area) = scenes. VWFA = words. These are the 'big three' category-selective areas.

Common questions

What does the fusiform gyrus do?

It supports fine visual discrimination, especially face identity and expert-level category recognition. Left fusiform cortex also contributes to rapid visual word-form processing.

What is the fusiform face area?

It is a region in fusiform cortex, commonly associated with Brodmann area 37, that responds more strongly to faces than to many other visual categories.

What is prosopagnosia?

Prosopagnosia is impaired recognition of familiar faces despite adequate basic vision. It can follow ventral occipitotemporal injury or occur developmentally.