CEREBRAL HEMISPHERES
Lobes: landmarks
- sulci (grooves)
- gyri (ridges)
CORTEX: OUTER LAYER
- GREY MATTER: DENDRITES &
SYNAPSES
LOCALIZATION OF
FUNCTION
Information flow:
Primary º Sensory association º Higher,
non-sensory association
Primary = Low level functions:
- “maps” of the senses: body, visual space, pitch
- codes basic stimulus dimensions
Body sense (“touch”)
- front Parietal lobe:
- distorted body map
Vision
- Occipital lobe: color, edges
- distorted map of visual world
- Hearing - top of Temporal lobe: pitch map
Sensory Assn. surround primary = perception,
recognition
- combines features into objects
- edges –> shapes
- tones mixtures –> barking, siren, door slam
Vision:
- bottom Temporal: shapes
- back Parietal: motion
Summary of
Association areas
Hearing:
- top Temporal lobe:
recognize speech,
meaningful sounds
Body sense (“touch”):
- middle of Parietal lobe:
recognize by shape
Higher Association Areas: remainder of cortex on temporal, parietal, frontal
lobes
- complex mental processes: not tied to any one sense
- language, attention, executive
back of left temporal lobe, Wernicke’s area:
back left frontal lobe Broca’s area:
Frontal lobes:
Action:
- Executive
- Organization
- fine control