ABRET ASAP EEG (Big Starred)

Nyquist Theory - The specification of the minimum sampling rate used, in relation to the highest frequency signal recorded The sample rate must be twice that of the highest frequency to be recorded. For LFF, the corresponding time constants for LFF cutout freq. of 3 hz would be - .05 seconds The most prominent clinical feature of Dilantin toxicity - Ataxia Ataxia - lack of muscle coordination Agnosia - the inability to recognize familiar objects. Apraxia - inability to perform particular purposive actions, as a result of brain damage. Diplopia - double vision Foramen of Monro - connects lateral ventricles to third ventricle Foramen magnum - the brain connects to the spinal cord. Foramen of Luschka - lateral aperture that connects fourth ventricle to subarachnoid space damage to the cerebral cortex - motor weakness, paralysis, loss of sensation, impaired ability to understand and process language Damage to Wernicke's area - receptive aphasia - inability to understand words Damage to Brocat s area - expressive aphasia - inability to produce language Dysarthria - slurred speech Scotoma - blind spot in vision Ohms law - the current in a circuit equals the voltage difference divided by the resistance V=IR Delta driving - Atypical photic response When the posterior background does not attenuate with eye opening - Bancaud Phenomenon Signals common to both inputs of a differential amplifier with like frequency, amplitude, and phase are: - Canceled A IFF setting of 5hz will attenuate a 5hz wave by approximately: - 0.3 Frequent movements is a characteristic of what type of sleep in neonates - active TIRDA - EEG pattern associated with seizures Rhythmic theta activity in the temporal region is most commonly associated with which seizure type: - Complex partial Saccadic eye movement - a rapid, jerky movement from one fixation to the next Lambda The pattern which disappears at the youngest conceptional age - Delta brushes The EEG of a patient with Lennox-Gastaut syndrome is most likely to show: - 1.5hz spike and wave discharges Undersampling - Aliasing A 60 year old male presents with new onset dementia nad myoclonus. What would you expect to see on the EEG - Generalized periodic epileptiform discharges Jeavon's Syndrome - Eyelid myoclonia with absences, eye closure induced seizures, EEG paroxysms and photosensitivity The 60 hz notch filter will have the greatest effect on a waveform having a duration of: - 16 msec Asychrony of sleep spindles is abnormal after: - 2 yrs Posterior Slow Waves of Youth - High voltage theta or delta waves, commonly seen in children 8-14 years, accentuated by hyperventilation Delta bursts that reappear 3 to 5 mi