Neuroanatomy Draw It To Know It

22. Vision 403

Occipital

area

Dorsal

stream

Ventral

stream

Frontal

eye fields

V1

V2

V3

V2

Calcarine V1

sulcus

V4

V3

V4

V3

V1

V2

Collateral

sulcus

Sylvian

fissure

Temporo-parieto-

occipital junction

V2

V1

V4

V3

Primary visual cortex

Secondary visual cortex

Tertiary visual cortex

(Illusory boundary processing)

(Primary processing)

Color processing

Dorsal stream -

“where” pathway

Ventral stream -

“what” pathway

Occipital area -

initial cortical processing

Frontal eye fields -

eye movements

Medial

hemisphere

Lateral

hemisphere

(eg, color constancy)

DRAWING 22-11 Cortical Visual Processing — Partial