ABRET Question and Answers Graded A+

ABRET Question and Answers Graded A+ What info do you need to calculate sensitivity? Deflection (mm) and Voltage (uV) Normal alpha in an adult should NOT be seen in the... Frontal head region What disease is caused by a proteinaceous particle or prion? Creutzfeldt-Jakob disease Syringomyelia is... An abnormal cavity or cyst in the spinal cord Spinocerebellar degeneration Friedreich's Ataxia Without dietetic treatment, this hereditary disease may cause mental retardation and infantile spasms. Phenylketonuria Central vertex electrode is... Cz What EEG pattern is considered a good prognostic sign in a comatose patient? Electrode inactivity Slow waves of youth attenuate with... Eye opening ______________________________________ is characterized by multiple seizure types that are difficult to control, especially atonic seizures and atypical seizures, in addition to generalized convulsions, and an abnormal EEG with generalized 2-5Hz slow spike-wave discharges. Lennox-Gastaut syndrome In a chain linked bipolar montage, what is the most valuable localizing feature? Phase reversal The dance like movements of head and extremities may be exhibited in a patient with which hereditary degenerative disease? Huntington's chorea What condition is characterized by nightly rigidity and tremors? Parkinson's disease Guidelines for recording digital EEG are written by: The American Clinical Neurophysiology (ACNS) An area of a brain injury that occurs on the opposite side of the head is called: Contra-coup The ability of the EEG instrument to output the voltage difference between two inputs to a single channel is known as? Differential amplification What is an abnormal cortical response to photic stimulation? Photo-paroxysmal discharges Congenital anomalies of the hindbrain with caudal displacement of pons, medulla, and cerebellar vermis is called: Arnold-Chiari malformation The desirable characteristic of a differential amplifier in which like signals are cancelled is called: Common Mode Rejection (CMR) A normal waking and sleeping adult EEG would NOT include: Delta range activity during alert stages A spike is printed out on paper and measures 16mm peak to peak the sensitivity is 7uV/mm and a calibration of 50uV causes a deflection of 7.1mm. What is the voltage of the spike? 112uV At a sensitivity of 3uV/mm, how much voltage is represented by a 7mm deflection? 21uV ______________________________________ is a genetic epilepsy syndrome whose gene has been mapped to chromosome 6 and becomes evident in normal teenagers with early morning myoclonic jerks and generalized tonic-clonic seizures. Juvenile Myoclonic Epilepsy (JME) Lambda differs from POSTS in that lambda is seen during... Eye opening A small fluctuating output by the EEG instrument even when there is no input signal and not associated with electrical line voltage from the outlet and other electrical devices is called: Noise Photic driving ___________________ May or may not be present in a normal EEG recording The basic unit for measuring current flow is Ampere The basic unit of resistance is Ohm What is not a valid expression of Ohm's law? In this equations E (electromotive force) is the same as V (voltage). R = E I or (R=VI) What is not a unit for measuring alternating frequencies? Volts What describes the action of a capacitor? Stores energy A circuit that allows some frequencies to pass through it, while others are blocked is a Filter A combination of electronic components designed to increase the power, voltage or current of a signal is a Amplifier A small fluctuating output recorded by the EEG instrument even when there is no input signal is called Noise