Define Laterialization in regard to the modular representation of different function
while many functions are symmetrical, there are many that are concentrated (laterialixed) primarily to epicenters on of one side of the brain.
Which hemisphere is typically dominant in most people? What are the %ages of right handed and left handed people with this?
>95% right handers
>70% left handers
Which hemisphere is typically non dominant?
What functions are associated/laterialized with to dominant hemisphere?
Math- sequential/ analytical skills
Music- found in skilled musicians sequential/analytical
Motor- Skilled formulation (praxis)
directions- Following written sequence of
What functions are associated/laterialized with to the NON dominant hemisphere?
math- lining up # on page
music- non trained musicans OR highly complex pieces for trained ones
visual spatial analysis and attention
prosody- emotion conveyed by tone
directions- navigating based on sense of spatial orientation
Is receptive language a dominant or non dominant function? What is receptive language?
Def- processing of incoming language information (speech, print, and sign) with the goal of comprehension
What areas and processes are invovled in receptive language (specifically receptive auditory comprehension)?
Primary auditory cortex- incoming language information
Wernicke's area - situated directly above the auditory cortex and maps sound to meaning
Is expressive language a dominant or non dominant skill?
What is Expressive language?
Expressive language is the production of language output (speech, writen, sign) with the goal of communicating with self or others.
What areas/ processes are invovled in expressive language (specifically speech production)?
What about repitition?
Brocas area (contains motor program for speech)
primary motor cortex
wernickes area--> arcutat fasciculus--> broca's area
What is apraxia? Where are the programs required for this located (hemisphere)?
The loss of previously learned motor movements
All skilled motor mo
What is aphasia? What are the four types?
the loss of previously acquired language functioning?
What hemisphere is selective/directed attention focus on?
Non dominant; right
What hemisphere is spatial analysis focused on?
non dominant; right
What is selective/ directed attention?
the ability to focus on one domain above others.
What does spatial analysis involve?
mental rotations, spatial construction and spatial imagery.
What does a lesion to a non-dominant parietal area lead to?
Hemineglect Syndrome: Severe impairement involving the non perception/inattention of a contralateral side of space.
What is procedural memory? Example?
Memory for things that cannot be easily verbalized.
Tying shoe laces
What structures are invovled in procedural memory?
cerebellum and basal ganglia
What is declaritive memory? Example?
Memory of things that can be "declared", including visual info.
Facts and events.
What structures are involved in declarative memory?
What is the hippocampus instrumental for?
it is the point structure for incoming information and it traslate is to from short term WM to long term memory, storing the information where it originated (orginally processed)