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The cognitive neuroscience of pattern

Object recognition

Depend on what objects.

Depend where the objects are located

Visual information processing pathways

Light stimulates photoreceptors on the retina

Optic nerve transmits activity to the brain

Visual cortex of the occipital lobe ( or area VI)

Pathways

Open pathways (occipioteporal pathway)

Occipitoparietal pathway

Projects into the ventral of the temporal lobe

Projects into the parietal lobe

It is specialized for the identification of objects

Lesions

Damage in the ventral pathway

Damage along the dorsal pathway

Produces impairment in spatial location

Produces impairment in object identification

Haxby and collegues

used PET to examine brain activity

Brain activity distinguised the pathways

Turned into forms of motion, direction, velocity, rotation and expansion / contraction