1. Nyquist Theory: The specification of the minimum sampling rate used, in
relation to the highest frequency signal recorded
The sample rate must be twice that of the highest frequency to be recorded.
2. For LFF, the corresponding time constants for LFF cutout freq. of 3 hz
would be __: .05 seconds
3. The most prominent clinical feature of Dilantin toxicity?: Ataxia
4. Ataxia: lack of muscle coordination
5. Agnosia: the inability to recognize familiar objects.
6. Apraxia: inability to perform particular purposive actions, as a result of brain
damage.
7. Diplopia: double vision
8. Foramen of Monro: connects lateral ventricles to third ventricle
9. Foramen magnum: the brain connects to the spinal cord.
10. Foramen of Luschka: lateral aperture that connects fourth ventricle to
subarachnoid space
11. damage to the cerebral cortex: motor weakness, paralysis, loss of
sensation, impaired ability to understand and process language
12. Damage to Wernicke's area: receptive aphasia - inability to understand
words
13. Damage to Broca's area: expressive aphasia - inability to produce language
14. Dysarthria: slurred speech
15. Scotoma: blind spot in vision
, Abret ASAP EEG [Big Starred]
.
16. Ohms law: the current in a circuit equals the voltage difference divided by the
resistance V=IR
17. Coulomb's Law: electric force between charged objects depends on the
distance between the objects and the magnitude of the charges.
18. Gelastic Seizures: hypothalamic hamartoma
Brief periods of laughter
19. Symptoms of Hemorrhagic Stroke: Exploding headache, decreased level of
consciousness, numbness/weakness on one side, vomitting, stiff neck (nochal
rigidity - which is also associated with Meningitis)
20. Symptoms of ischemic stroke: Numbness of face, arm, leg (especially on
one side). Confusion, speech, seeing double or blurry, visual disturbances,
trouble walking, perceptual problems
21. symptoms of subdural hematoma: headache, lethargy, may show focal
signs, may be asymptomatic
22. Symptoms of subarachnoid hemorrhage: Intolerance to light
Neck stiffness/pain
23. empyema: pus in the pleural cavity
24 Depolarization: The process during the action potential when sodium is
rushing into the cell causing the interior to become more positive.
25. Repolarization: Return of the cell to resting state, caused by reentry of
potassium into the cell while sodium exits the cell.
26. Rolandic fissure (central sulcus): fissure that divides frontal lobe from
parietal lobe
27. Heschl's gyrus: A superior temporal lobe gyrus that is located in the lateral
fissure of each hemisphere; it is the location of most of the primary auditory
cortex
, Abret ASAP EEG [Big Starred]
.
28. Anoxia: No oxygen
29. Hypoxia: Reduced oxygen
30. PLEDS: Periodic lateralized epileptiform discharges. These are sharp
complexes that are non-reactive to stimulation and are more pronounced with
drowsiness.
Tend to occur with cerebral infarction or severe damage.
31. nephrotic syndrome: group of clinical signs and symptoms caused by
excessive protein loss in urine
32. Uncus: on medial surface of temporal lobe (olfactory area)
33. trace' discontinue: less than 30 weeks conceptual age
Involves bursts of medium to high amp, mixed frequency waves that are random
and paroxysmal
posterior head regions
34. Trace Alternant: -less discontinous than trace' dicontinue . . periods between
bursts are of shorter duration -may be present until 1 month of age
-quiet sleep
35. Gyrus: A convoluted ridge between anatomical grooves.
36. Subacute sclerosing panencephalitis (SSPE): Measles
37. By one year of age, the dominant background rhythm should be ___: 5 to
6 hz
38. Hertz of Mu: 8-10hz
39. A 7 year old male presents with a 6 month history of spells involving
numbness and tingling of his tongue. He remains concious the entire