Lecture 2: Brain Function Flashcards Preview

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Flashcards in Lecture 2: Brain Function Deck (19):
0

What happens when thalamic connections are cut?

Almost all function of the corresponding cortical areas are lost

1

What are the 3 major association areas?

1) Parieto-occipitotemporal
2) Prefrontal
3) Limbic

2

What does the prefrontal association area do?

Receives preanalyzed sensory information needed for planning effective movements

3

Where does the output of the prefrontal association area pass through?

Caudate portion of basal ganglia

4

What does Broca's association area do?

Provides circuitry for word formation
*Left brain dominant

5

What does the limbic association area do?

Concerned with behavior, emotions, & motivation

6

What does Wernicke's area do?

Language comprehension, left brain dominant

7

What association areas meet at Wernicke's area?

Somatic, visual, & auditory

8

What area of the cerebral cortex plays the greatest role for intelligence?

Wernicke's area

9

T/F: Wernicke's area and angular gyrus are more developed in left hemisphere in 75% of people.

False, in 95% of people

10

T/F: Broca's area is more dominant in the left hemisphere?

True

11

T/F: Motor areas for controlling hands are dominant in the left hemisphere in 80% of people.

False, in 90% of people

12

What is the corpus callosum?

The major commissure between the two hemispheres

13

What 3 major things result from cutting the corpus callosum?

1) Blocking information from Wernicke's area to nondominant motor cortex
2) Blocking of somatic & visual information from right hemisphere to Wernicke's area
3) Results in 2 separate conscious portions of brain

14

What is declarative memory?

Memory of various details of an integrated thought
EX: Surroundings, time relationships, causes of experience

15

What is reflexive memory?

Associate with motor activities (skills)

16

What is short-term memory?

Lasts as long as the person is thinking of the fact/number sequence (seconds, minutes)

17

What is Intermediate long-term memory?

Lasts minutes to weeks
May become long-term memory if enough memory traces are activated

18

What structural changes are associated with long-term memory?

Increase in vesicle release sites, number of vesicles, number of presynaptic terminals, & change in structure of dendritic spines