Electroencephalography Flashcards
EEG is a unique tool for the study of what?
Cortical Function
EEG is a valuable supplement to what?
History
Physical Examination
Information gained by Radiological studies
Oscillations of the EEG are measured in?
Microvolts
Oscillations of the EEG are thought to be generated by?
Reciprocal excitatory and inhibitory interactions of neighboring cortical cell columns.
Normal EEG rhythms occur during what state?
Awake and Alert State
An awake and alert state is classified as?
Desyncronized
In REM sleep, REM stands for?
Rapid Eye Movement
REM sleep is described as?
A dreamy light sleep accompanied by rapid eye movement
In NREM sleep, NREM stands for?
Non-Rapid Eye Movement
NREM sleep is at what stage?
Stage 3 or Slow Wave Sleep
For a typical 8 hours of sleep what stages do you go through?
REM
Stage 1-4
EEG is used to check?
Seizures
After a seizure occurs there will be a brief period of?
Hyperventilation
A brief period of photic stimulation using strobe light at varying frequencies can induce a?
Seizure
What is a sleep disorder characterized by daytime sleep attacks?
Narcolepsy
What syndrome causes irresistible desire to sleep?
Narcoleptic Syndrome
What other symptoms are present with narcoleptic syndrome?
Hypnogogic hallucinations at sleep onset
Cataplexy (muscle paralysis)
Next CVA, what is the most common group of problems encountered in clinical neurology?
Seizures
What are the types of seizures?
Benign Febrile Convulsions (BFC)
Seizure due to trauma
Seizure EEG
A seizure is a transient alteration of behavior brought about by abnormal burst-firing of neurons in the?
Cerebral Cortex “Ictus”
Seizures are characterized by either?
General or Focal
A general seizure was formally called?
Grand-Mal Seizure
A focal seizure is partial which refers to the?
Seizure Origin
A generalized tonic clonic seizure is characterized by what two stages?
Tonic
Clonic
A tonic seizure is classified by?
Body Stiffening and Jerky Movements of all 4 limbs
A clonic seizure is classified by?
Chewing movements of the mouth
What is the definition of an absence seizure (petit map)?
Blank Periods with episodes of muscle twitching
A focal (partial) seizure can be simple which means what is preserved?
Conciousness
A jacksonian seizure is sequential activation of adjacent areas of the?
Motor Cortex
What is Todd’s paralysis?
Weakness of affected limbs
A focal (partial) seizure can be complex which means the patient is?
Unaware
