Abret Questions With 100 % Correct Answers | Verified

When the posterior background rhythm does not attenuate with eye opening it is referred to as: - Answer-Bancaud Phenomenon activation procedures should be AVOIDED in a patient with a recent intracranial hemorrhage? - AnswerHyperventilation What is the indentation between the nose and the forehead? - Answer-Nasion BENIGN EPILEPTIFORM TRANSIENTS OF SLEEP - Answer-peak at 30-60 years Which of the following time constants would best display delta activity? - Answer-1.0 second STAGE N3 (STAGE 3/4) SLEEP - Answer-30% delta activity Ictal - Answer-During What is the likely focus and the polarity of the sharply contoured wave in the box? - Answer-Fp1 Negative Atonic seizure - Answer-Loss of whole body muscle tone MENINGITIS - Answer-Nuchal rigidity Which mathematically converts the time function into a sine wave of different frequencies? - AnswerFast Fourier Transform PLEDS are most likely to be seen in a patient presenting with: - Answer-Cerebral embolusWhich normal waveform is NOT typically seen in the posterior leads? - Answer-Wickets Which of the following is most useful in the evaluation of temporal lobe seizures? - Answer-Sleep EEG The pattern which disappears at the youngest conceptional age is - Answer-delta brushes At the onset of sleep, a 40-week conceptional age infant is most likely to enter into which of the following stages of sleep? - Answer-Active Which of the following occurs during a typical absence seizure? - Answer-Impaired consciousness A 9 mm deflection at a setting of 20 microvolts/mm will have an input signal of - Answer-180 microvolts Why is it not best practice to allow an outpatient to sleep throughout the entire EEG recording? - Answer-Unable to evaluate the patient's background rhythm Which of the following is the most appropriate instrumentation setting change that should be made in order to enhance cortical slowing? - Answer-Change the LFF from 1 Hz. To .1 Hz. Which of the following stimuli is most likely to be a trigger for Reflex Seizures? - Answer-Writing What is a sub harmonic response to photic stimulation? - Answer-Photic driving at half the speed of the flash rate Using the International 10-20 electrode placements, if the distance from Fp2 to F4 is 5.5 cm, what is the distance from P4 to 02? - Answer-5.5 cm Signals common to both inputs of a differential amplifier with like frequency, amplitude and phase are: - Answer-canceledWith rapidly increasing dosage, which of the following medications will have the most sedative effect on the patient? - Answer-Barbiturates Photic light should be how far from a patient's eyes? - Answer-12 inches A common electrographic correlate of a seizure: - Answer-Rhythmic activity EMG artifacts time locked with the flash frequency of photic stimulation - Answer-Photomyogenic Response When attempting to minimize relentless muscle artifact on a recording, the technologist should be aware that lowering the high filter could cause the artifact to resemble: - Answer-beta activity. Which of the following converts an analog signal into a series of digital binary numbers? - Answer-A/D Converter An EEG performed two days following a transient ischemic attack is most likely to show: - Answer-Normal activity Of the following, which is NOT an ACNS guideline for ECI recording? - Answer-Record at the standard sensitivity setting of 7 µV/mm for at least 30 minutes of the recording. A childhood disorder characterized by acquired aphasia, multifocal epileptiform abnormalities, and focal or generalized seizures: - Answer-Landau-Kleffner syndrome In a differential amplifier, if input 1 received a voltage of + 50 microvolts and input 2 a voltage of - 100 microvolts, the output voltage and deflection would be approximately - Answer-150 downward The onset of West syndrome is most likely to occur at age: - Answer-4 months If the nasion to inion measurement is 40 cm, what is the distance between Cz and Pz? - Answer-8 cmIn the EEG laboratory, the major concern for transmission of infection is through - Answer-blood. Sturge-Weber Syndrome - Answer-Neurocutaneous involvement Which activity does NOT typically cause an attenuation of the posterior dominant alpha rhythm in the normal adult? - Answer-Relaxed wakefulness with eyes closed Ruptured aneurysm with headache, nuchal rigidity, confusion and drowsiness. - Answer-Subarachnoid hemorrhage In the International 10-20 electrode placements, C6 is located on which side of the head? - Answer-Right A meningioma is usually - Answer-encapsulated. The activity in the red box would best be described as: - Answer-EMG