higher cortical functions

Question 1

Association

Answer 1

Meaning of sensory stimuli understood through recognition of new inupt - association areas
- Adjacent to each sensory cortex is an association area

Question 2

Association cortex

Answer 2

In parietal lobe, deals w recognition of sensory input
- Ex. feel something in pocket, adjacent association area helps recognize object
- Compares present situations and past experience

Question 3

Agnosia

Answer 3

Damage to association cortex
- Can detect but not recognize

Question 4

Language and cerebral dominance

Answer 4

Ability to detect, comprehend, express language is function of a single cerebral cortex.
- 99.9% right handed ppl, right hemisphere dominant
- 70% left handed ppl, left hemisphere is dominant
- Remaining 30%: 1/2 right dom, 1/2 mixed dom

Question 5

Wernicke’s area

Answer 5

Junction b/w parietal and temporal lobes
- Comprehension of language (written + spoken)
- Selection of correct words
- Organizes seq of words

Question 6

Broca’s area

Answer 6

Inferior frontal lobe, anterior to head area of motor cortex
- Motor output of language

Question 7

Wernicke’s aphasia

Answer 7

Written and spoken words can be produced, but
- Deficiencies in linguistic content/meaning
- Incorrect letters or words used
- New, meaningless words
- Deficient comprehension

Question 8

Broca’s aphasia

Answer 8

Produce few written or spoken words, difficulty in pronounciation
- Leave out all but most meaningful words
- Slow speech
- Less difficulty in comprehension