Cerebral Cortex & Cortical Localization Flashcards Preview

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Flashcards in Cerebral Cortex & Cortical Localization Deck (18)
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1

what does the supplemental motor cortex and premotor cortex do?

involved in planning and programming of complex movement. Located in front of the primary motor cortex

2

Broca's area

found on the lateral edge of the frontal lobe and is important in speech formation

3

Broca's Aphasia?

deficits in speech formation because this area is responsible for motor output for producing speech

4

what is the rostral pole of the frontal lobe important for?

personality

5

parietal association cortex

- combines sensory information
- awareness of our body and environment
- neglect syndrome can result from lesion of the right parietal cortex

6

True of false, a person with wernicke's aphasia is deaf

FALSE

7

what is consciousness

the state of being aware, or perceiving physical facts or mental concepts; a state of general wakefulness and responsiveness to environment; a functioning sensorium

8

stupor

a state of impaired consciousness in which the individual shows a marked diminution in reactivity to environmental stimuli and can be aroused only by continual stimulation

9

coma

a state of profound unconsciousness from which one cannot be roused; may be due to the action of an ingested toxic substance or of one formed in the body, to trauma or to disease

10

non-rem sleep

- several stages from light sleep to deep sleep
- from 1 to 4, EEg activity slows and gets more synchronized and has larger spike activity

11

REM sleep

-limb and body muscles are inhibited through nervous system, no movements and muscle tone is low
- rapid eye movement beneath closed eyelids
- EEG activity looks like when you're awake
- 4-6 times a night, more so later in the sleep period
- is essential

12

cerebral (brain) death

permanent loss of cerebral and brain stem function, manifested by absence of responsiveness to external stimuli, absence of cephalic reflexes and apnea

13

what are the signs of brain death?

1. no pupil reaction to light
2. no corneal reflex
3. no motor response to painful stimulus
4. no respiratory movements when disconnected from ventilator (no response to increased Co2)
5. no gag, cough, or sucking reflexes
6. no EEG (electroencephalogram) activity

14

epilepsy

A chronic disorder characterized by paroxysmal brain dysfunction due to excessive neuronal discharge, and usually associated with some alteration of consciousness

15

stroke

damage to the brain due to impairment of cerberal circulation

16

what are the symptoms of stroke

1. weakness
2. trouble speaking
3. vision problems
4. headache
5. dizziness

17

when is tPA administered?

for ischemic strokes (occlusion of blood vessel by a blood clot)

18

PET scan

- positron emission topography
- radioactive tracer attached to fluorodeoxyglucose (FDG) molecule
- detectors localize photons emitted
- areas utilizing more glucose have higher labelling