EEG Board Prep Questions And Answers

EEG Board Prep Questions And Answers You are called to do an EEG on a patient who was found down for an unknown amount of time. Based on your findings, you decided to perform cerebral death protocol via your labs policy. The sensitivity should be increased to 2 uv/mm A recording directly from the brain Electrocorticorgraphy Tacys Sachs disease is associated with Cherry red spots in the eyes You are recording in a longitudinal (double banana) montage. You see a spike discharge phase reverse at C4 and T4. In this case the true localization of the spike can best be see in a transverse montage If the time (horizontal) scale is changed from 30mm/sec to 15mm/sec, the 6 hertz activity becomes there is no frequency change but the activity appears faster Which of the follow drugs show the most observable effects on the EEG? Benzodiaepines The notch filter can distort spikes and should only be used when other measures to reduce ____ interference fail 60Hz Lambda waves can be associated with saccadic eye movement Wernickes Encephalopathy can be cause by Thiamine deficiency During a bipolar recording, you notice sharp activity from F7-T3 that shows an upward deflection, T3-T5 shows no activity, and T5-O1 shows a downward deflection. Which statement below best represents the above scenario? Equipotential at T3 and T5 A characteristic of this disease is high amplitude spikes in the occipital region, time locked with a slow photic stimulus rate in young children Batten's disease Which are of the CNS contains nucli of the cranial nerves III to XII? Brain stem This is located in the frontal lobe primary motor strip EPSP causes Depolarization A patient has hepatic encephalopathy. The EEG is most likely to show Triphasic waves You are performing an EEG on a person who has Alzheimer's disease, but is is the very early stages. You are most likely to see this on the EEG normal activity The amplitude of a theta wave on the left temporal is 65uV, and the amplitude of a theta wave at the same time on the right temporal is 25 uV. This is called amplitude asymmetry You are performing an EEG on a patient and notice ECG (EKG) artifact. The montage to best eliminate ECG is a linked ear referential montage Syringomyelia abnormal cavity or cyst in the spinal cord Focal seizures refer to Seizures occurring from one hemisphere Wada testing is done to determine speech dominance Brainstem midbrain, pons and medulla As you are performing an EEG, you notice a wave that is sharply contoured and stands out from the background located in the left temporal region. You measure it, and it measures 90ms in duration. You would call this wave a sharp In a normal adult EEG, six to seven hertz theta activity is normally seen at the onset of drowisness Inflammation of the brain encephalitis The major seizure classification system from the ILAE has these major categories Focal, Unknown onset, Generalized Changing this could cause artifact to resemble beta activity high frequency filter Which of the following is a normal variant mostly recorded from the posterior temporal region? 14 and 6 positive spikes Along the motor cortex, which area listed below is closest to the midline Along the motor cortex, which area listed below is closest to the midline Which membrane covering is closest to the brain pia mater A brain injury that occurs on the opposite side of the head is referred to as contra coup The term complex in complex partial seizures refers to impairment of consciousness This is the lobe that would be affected if you were having a visual aura occipital Changing the high frequency filter from 70 Hz to 30 Hz attenuates EMG artifact and epileptic discharges Deja Vu false sense of familiarity with the current situation Your patients was found to have blood in their cerebrospinal fluid (CSF), they most likely have subarachnoid hemorrhage The difference between trace discontinue (TD) and trace alternate (TA) is: select the best answer