CLTM and EEG Board Exam Prep
Combined Study Set
The most appropriate time constant for recording a low voltage slow wave focus is:
a. 0.012 seconds
b. 0.05 seconds
c. 0.12 seconds
d. 1.00 second - Answer-c. 0.12 seconds
Time constant = biggest number for slowing
Which of the following typically produces diffuse slowing on the EEG?
a. Meningioma
b. Cerebral abscess
c. Alzheimer's disease
d. Cerebral thrombosis - Answer-c. Alzheimer's disease
Meningioma
Lateralized or Focal, Diffuse, Focal - Answer-Lateralized or Focal
,Alzheimer's disease
Lateralized or Focal, Diffuse, Focal - Answer-Diffuse
Cerebral Thrombosis
Lateralized or Focal, Diffuse, Focal - Answer-Focal
Which of the following is a characteristic feature of the EEG in narcolepsy?
a. FIRDA
b. REM onset sleep
c. An increase in EMG
d. Diffuse delta slowing - Answer-b. REM onset sleep
What is the most common cause for temporal lobe seizures in adults?
a. Diffuse axonal injury
b. Hippocampal sclerosis
c. Glioblastomamultiforme
d. Venousangioma - Answer-b. Hippocampal Sclerosis
In a one-year-old child with West Syndrome, episodes of neck flexion and arm extension are MOST likely
to be associated with which of the following EEG patterns?
a. 3Hz spike/wave discharges
b. fast polyspike and wave discharges
c. generalized paroxysmal fast activity
d. polymorphic theta and delta activity - Answer-c. generalized paroxysmal fast activity
, During brain mapping, which of the following techniques is commonly used to localize the central
sulcus?
a. median nerve SEPs
b. intracarotid amobarbital test
c. wake up test
d. implantation of depth electrodes - Answer-a. median nerve SEPs
West Syndrome - Seizure Type - Answer-Infantile Spasms
Select the epilepsy syndrome known to present with electrodecremental response following each event:
a. Infantile Spasms
b. West Syndrome
c. Hypsarhythmia
d. Lennox Gasteaux - Answer-b. West Syndrome
Impedance for Strips and Grids: - Answer-< 10nA (nanoamps)
Maximum allowable chassis leakage with invasive electrodes: - Answer-10mA rms
If you are recording with electrodes of different metals (mismatched metals such as one gold electrode
referenced to Silver Silver Chloride electrode) what might you expect to record?
a. High Impedance Readings
b. 60 Cycle Artifact
c. Bias Potentials from the differential amplification of the different charge of each metal
d. No change as the Common Mode Rejection would eliminate the different in metal charge. - Answer-
c. Bias Potentials from the differential amplification of the different charge of each metal.
Combined Study Set
The most appropriate time constant for recording a low voltage slow wave focus is:
a. 0.012 seconds
b. 0.05 seconds
c. 0.12 seconds
d. 1.00 second - Answer-c. 0.12 seconds
Time constant = biggest number for slowing
Which of the following typically produces diffuse slowing on the EEG?
a. Meningioma
b. Cerebral abscess
c. Alzheimer's disease
d. Cerebral thrombosis - Answer-c. Alzheimer's disease
Meningioma
Lateralized or Focal, Diffuse, Focal - Answer-Lateralized or Focal
,Alzheimer's disease
Lateralized or Focal, Diffuse, Focal - Answer-Diffuse
Cerebral Thrombosis
Lateralized or Focal, Diffuse, Focal - Answer-Focal
Which of the following is a characteristic feature of the EEG in narcolepsy?
a. FIRDA
b. REM onset sleep
c. An increase in EMG
d. Diffuse delta slowing - Answer-b. REM onset sleep
What is the most common cause for temporal lobe seizures in adults?
a. Diffuse axonal injury
b. Hippocampal sclerosis
c. Glioblastomamultiforme
d. Venousangioma - Answer-b. Hippocampal Sclerosis
In a one-year-old child with West Syndrome, episodes of neck flexion and arm extension are MOST likely
to be associated with which of the following EEG patterns?
a. 3Hz spike/wave discharges
b. fast polyspike and wave discharges
c. generalized paroxysmal fast activity
d. polymorphic theta and delta activity - Answer-c. generalized paroxysmal fast activity
, During brain mapping, which of the following techniques is commonly used to localize the central
sulcus?
a. median nerve SEPs
b. intracarotid amobarbital test
c. wake up test
d. implantation of depth electrodes - Answer-a. median nerve SEPs
West Syndrome - Seizure Type - Answer-Infantile Spasms
Select the epilepsy syndrome known to present with electrodecremental response following each event:
a. Infantile Spasms
b. West Syndrome
c. Hypsarhythmia
d. Lennox Gasteaux - Answer-b. West Syndrome
Impedance for Strips and Grids: - Answer-< 10nA (nanoamps)
Maximum allowable chassis leakage with invasive electrodes: - Answer-10mA rms
If you are recording with electrodes of different metals (mismatched metals such as one gold electrode
referenced to Silver Silver Chloride electrode) what might you expect to record?
a. High Impedance Readings
b. 60 Cycle Artifact
c. Bias Potentials from the differential amplification of the different charge of each metal
d. No change as the Common Mode Rejection would eliminate the different in metal charge. - Answer-
c. Bias Potentials from the differential amplification of the different charge of each metal.
