Nyquist Theory - ✔✔ The specification of the minimum sampling rate used, in relation to the highest frequency signal recorded
The sample rate must
... [Show More] be twice that of the highest frequency to be recorded.
For LFF, the corresponding time constants for LFF cutout freq. of 3 hz would be __ - ✔✔ .05 seconds
The most prominent clinical feature of Dilantin toxicity? - ✔✔ Ataxia
Ataxia - ✔✔ lack of muscle coordination
Agnosia - ✔✔ the inability to recognize familiar objects.
Apraxia - ✔✔ inability to perform particular purposive actions, as a result of brain damage.
Diplopia - ✔✔ double vision
Foramen of Monro - ✔✔ connects lateral ventricles to third ventricle
Foramen magnum - ✔✔ the brain connects to the spinal cord.
Foramen of Luschka - ✔✔ lateral aperture that connects fourth ventricle to subarachnoid space
damage to the cerebral cortex - ✔✔ motor weakness, paralysis, loss of sensation, impaired ability to understand and process language
Damage to Wernicke's area - ✔✔ receptive aphasia - inability to understand words
Damage to Broca's area - ✔✔ expressive aphasia - inability to produce language
Dysarthria - ✔✔ slurred speech
Scotoma - ✔✔ blind spot in vision
Ohms law - ✔✔ the current in a circuit equals the voltage difference divided by the resistance
V=IR
Coulomb's Law - ✔✔ electric force between charged objects depends on the distance between the objects and the magnitude of the charges.
Gelastic Seizures - ✔✔ hypothalamic hamartoma
Brief periods of laughter
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)
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
symptoms of subdural hematoma - ✔✔ headache, lethargy, may show focal signs, may be asymptomatic
Symptoms of subarachnoid hemorrhage - ✔✔ Intolerance to light
Neck stiffness/pain
empyema - ✔✔ pus in the pleural cavity
Depolarization - ✔✔ The process during the action potential when sodium is rushing into the cell causing the interior to become more positive.
Repolarization - ✔✔ Return of the cell to resting state, caused by reentry of potassium into the cell while sodium exits the cell.
Rolandic fissure (central sulcus) - ✔✔ fissure that divides frontal lobe from parietal lobe
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
Anoxia - ✔✔ No oxygen
Hypoxia - ✔✔ Reduced oxygen
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.
nephrotic syndrome - ✔✔ group of clinical signs and symptoms caused by excessive protein loss in urine
Uncus - ✔✔ on medial surface of temporal lobe (olfactory area)
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
Trace Alternant - ✔✔ -less discontinous than trace' dicontinue . . periods between bursts are of shorter duration
-may be present until 1 month of age
-quiet sleep
Gyrus - ✔✔ A convoluted ridge between anatomical grooves.
Subacute sclerosing panencephalitis (SSPE) - ✔✔ Measles
By one year of age, the dominant background rhythm should be ___ - ✔✔ 5 to 6 hz
Hertz of Mu - ✔✔ 8-10hz [Show Less]