EEG Study Guide: Understanding Sleep Stages, Seizures, and Brain Activity, Exams of Nursing

Download EEG Study Guide: Understanding Sleep Stages, Seizures, and Brain Activity and more Exams Nursing in PDF only on Docsity! ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Nyquist Theory - correct answers ✅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 __ - correct answers ✅.05 seconds The most prominent clinical feature of Dilantin toxicity? - correct answers ✅Ataxia Ataxia - correct answers ✅lack of muscle coordination Agnosia - correct answers ✅the inability to recognize familiar objects. Apraxia - correct answers ✅inability to perform particular purposive actions, as a result of brain damage. Diplopia - correct answers ✅double vision Foramen of Monro - correct answers ✅connects lateral ventricles to third ventricle Foramen magnum - correct answers ✅the brain connects to the spinal cord. Foramen of Luschka - correct answers ✅lateral aperture that connects fourth ventricle to subarachnoid space damage to the cerebral cortex - correct answers ✅motor weakness, paralysis, loss of sensation, impaired ability to understand and process language Damage to Wernicke's area - correct answers ✅receptive aphasia - inability to understand words Damage to Broca's area - correct answers ✅expressive aphasia - inability to produce language ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Dysarthria - correct answers ✅slurred speech Scotoma - correct answers ✅blind spot in vision Ohms law - correct answers ✅the current in a circuit equals the voltage difference divided by the resistance V=IR Coulomb's Law - correct answers ✅electric force between charged objects depends on the distance between the objects and the magnitude of the charges. Gelastic Seizures - correct answers ✅hypothalamic hamartoma Brief periods of laughter Symptoms of Hemorrhagic Stroke - correct answers ✅Exploding headache, decreased level of consciousness, numbness/weakness on one side, vomitting, stiff neck (nochal rigidity - which is also associated with Meningitis) Symptoms of ischemic stroke - correct answers ✅Numbness of face, arm, leg (especially on one side). Confusion, speech, seeing double or blurry, visual disturbances, trouble walking, perceptual problems symptoms of subdural hematoma - correct answers ✅headache, lethargy, may show focal signs, may be asymptomatic Symptoms of subarachnoid hemorrhage - correct answers ✅Intolerance to light Neck stiffness/pain empyema - correct answers ✅pus in the pleural cavity ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ What is frequency measured in and what is it influenced by - correct answers ✅Hertz and sampling rate What happens when a 60 cycle sine wave is sampled at 100 hertz? - correct answers ✅Aliasing Aliasing - correct answers ✅misperception of a grating due to undersampling Doubling the inter-electrode distances will have what effect on the waveforms - correct answers ✅increase amplitude What encephalopathic EEG pattern is most commonly associated with children? - correct answers ✅OIRDA Hypocapnia - correct answers ✅insufficient carbon dioxide (hyperventilation) Hyperglycemia - correct answers ✅excessive sugar in the blood Hypoglycemia - correct answers ✅abnormally low level of sugar in the blood Anterior cerebral artery stroke - correct answers ✅contralateral motor and or sensory loss lower limbs Seizure activity in which antaomical region may produce strong deja vu and chewing automatisms? - correct answers ✅Temporal Hemianopia - correct answers ✅blindness over half the field of vision Aphasia - correct answers ✅inability to speak Bilateral anterior beta activity is most likely to occur with what medication - correct answers ✅Diazepam ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Alpha rhythm polarity - correct answers ✅Negative Brain abcess would produce what eeg pattern - correct answers ✅Focal polymorphic delta activity Trace Discontinu is expected until what age - correct answers ✅Up to 34 wks Trace alternant age - correct answers ✅36 weeks conceptual age or older which can persist up to 3-4 weeks after birth in full-term neonates Frontal sharp transients neonate age - correct answers ✅34-35 wks, persist through term Age in which change EEG from stimuli occurs - correct answers ✅33-34 wks CA Clear EEG differences between wake and sleep occur at what age? - correct answers ✅36-37wks CA Photomyogenic Response - correct answers ✅EMG artifacts time locked with the flash frequency of photic stimulation Temporal theta bursts are seen in which neonatal age group? - correct answers ✅24-28wks gestation Sleep stages in a term newborn infant are: - correct answers ✅characterized by rapid onset active sleep Low sampling rate may cause fast frequencies to appear slower - correct answers ✅Aliasing An EEG obtained within 24 hours following a closed head injury would be least likely to show __ - correct answers ✅Focal spike activity What must be ruled out as a cuase of ECI in the determination of brain death? - correct answers ✅Barbiturate overdose ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Subharmonic photic driving response - correct answers ✅Half the frequency of the flash strobe The clonic phase in a generalized tonic clonic seizure is characterized by: - correct answers ✅Diffuse rhythmic spikes followed by diffuse SSW activity Chronic alcoholism can cause what on the EEG - correct answers ✅Low amplitude and decreased alpha Best choice of reference to be used when recording suspected temporal lobe epilepsy - correct answers ✅CZ a 5 month old awake infant is most likely to have a dominant posterior rhythm of __ - correct answers ✅5hz What medication can cause triphasic waves and/or periodic discharges - correct answers ✅Lithium Lowering the high filter could cause artifact to resemble what? - correct answers ✅Beta activity During neonatal seizures, the EEG is most likely to show: - correct answers ✅Focal rhythmic activity According to the guidelines, how many bits of resolution is required? - correct answers ✅16 Degenerative disease characterized by dementia and dance like movements - correct answers ✅Huntington's disease During what type of seizure would a patient be likely to experience deja vu? - correct answers ✅Complex partial SREDA - correct answers ✅an uncommon, but normal variant seen in adults over 50 that may be mistaken for epileptiform activity ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ By what age should EEG differentiation of the four stages of non-REM sleep be identifiable in a child born at term? - correct answers ✅6 months At the onset of sleep, a 40-week conceptional age infant is most likely to enter into which of the following stages of sleep? - correct answers ✅Active Sleep spindles should be synchronous by: - correct answers ✅2 years What time constant would best display delta activity - correct answers ✅1 second Slow spike-and-wave complexes are characteristic of: - correct answers ✅Lennox-Gastaut syndrome Which neurological syndrome may be associated with focal epilepsy? - correct answers ✅Tuberous Sclerosis complex Seizures with visual hallucinations such as flashing lights are most likely to arise from the: - correct answers ✅Occpital lobe What is the most appropriate sampling rate that should be used for a HFF of 70hz, according to ACNS guidelines - correct answers ✅210 p sec Long time constant - correct answers ✅LFF of .1hz In deepening coma, triphasic waves are most likely to: - correct answers ✅Disappear Most appropriate sampling rate that should be used for a HFF of 70hz, according to nyquist theory - correct answers ✅140 p/ sec What montage would best display the amplitude of a left temporal spike? - correct answers ✅Left temporal to the contralateral ear ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Marked amplitude asymmetry - correct answers ✅Consistent asymmetry in amplitude on a referential recording of more than 50% amplitude The EEG of a patient with meningitis is most likely to show: - correct answers ✅Slowing At theraputic levels, phenytoin causes what kind of eeg findings? - correct answers ✅No change 14 & 6 hz positive spikes are best recorded with: - correct answers ✅the contralateral ear reference Delta driving - correct answers ✅Atypical photic response When the posterior background does not attenuate with eye opening - correct answers ✅Bancaud Phenomenon Signals common to both inputs of a differential amplifier with like frequency, amplitude, and phase are: - correct answers ✅Canceled A lFF setting of 5hz will attenuate a 5hz wave by approximately: - correct answers ✅0.3 Frequent movements is a characteristic of what type of sleep in neonates - correct answers ✅active TIRDA - correct answers ✅EEG pattern associated with seizures Rhythmic theta activity in the temporal region is most commonly associated with which seizure type: - correct answers ✅Complex partial Saccadic eye movement - correct answers ✅a rapid, jerky movement from one fixation to the next Lambda ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ The pattern which disappears at the youngest conceptional age - correct answers ✅Delta brushes The EEG of a patient with Lennox-Gastaut syndrome is most likely to show: - correct answers ✅1.5hz spike and wave discharges Undersampling - correct answers ✅Aliasing A 60 year old male presents with new onset dementia nad myoclonus. What would you expect to see on the EEG - correct answers ✅Generalized periodic epileptiform discharges Jeavon's Syndrome - correct answers ✅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: - correct answers ✅16 msec Asychrony of sleep spindles is abnormal after: - correct answers ✅2 yrs Posterior Slow Waves of Youth - correct answers ✅High voltage theta or delta waves, commonly seen in children 8-14 years, accentuated by hyperventilation Delta bursts that reappear 3 to 5 minutes after cessation of HV is a common feature in what disease? - correct answers ✅Moya Moya What is most useful when determining localization and polarity? - correct answers ✅Montage In the majority of patients with arterial hypertension and acute pure motor hemiplegia, the EEG will most likely show: - correct answers ✅normal activity What is most likely to be the finding in a full term neonate with seizures? - correct answers ✅Focal spike and sharp waves ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Batten's Disease - correct answers ✅High amplitude spikes in the occipital region, time locked with a slow photic stimulus rate in young children What other EEG pattern would you expect to see in a patient with prominent photic driving? - correct answers ✅Lambda What is the electrical abnormality associated with breach rhythm? - correct answers ✅A focal low impedance pathway through the skull Clipping of the waveform occurs when: - correct answers ✅The signal is outside the range of the digitizer Small sharp spikes - correct answers ✅benign epileptiform transients of sleep Hyperventilation should be done at a rate of: - correct answers ✅20 breaths per minute Trace alternant - correct answers ✅35 wks CA Which montage would best localize occipital spikes by phase reversal? - correct answers ✅Circumferential bipolar montage Periodic discharges - correct answers ✅Seen at nearly regular intervals and having a cycle length varying by less than 50% Features such as bicyling movements, kicking, throwing things, rocking, often nocturnal - correct answers ✅Frontal lobe seizures EEG amplifiers would on the principle of: - correct answers ✅both differential and amplification Voltage resolution - correct answers ✅Analong to digital converter ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ What extra electrode might best demonstrate the EEG activity associated with focal motor twitching of the right corner of the mouth? - correct answers ✅C5 Gelastic seizure - correct answers ✅Hypothalamic hamartoma - cant stop laughing Sphenoidal electrodes are used to record activity from the: - correct answers ✅Anterior temporal lobes ESES and aphasia are a characteristics of what syndrome? - correct answers ✅Landau-Kleffner BIPLEDS characteristic of: - correct answers ✅Hypoxia Right temporal sharp transients recorded during wakefullness in a 38 wk CA infant: - correct answers ✅is a non specific indicator of right temporal dysfunction To enhance the background alpha and beta asymmetry in an EEG record showing moderately high voltage delta activity, the tech should use a: - correct answers ✅Shorter time constant and increased sensitivity Occipital spikes in response to low frequency flashes are commonly seen in what condition? - correct answers ✅Batten's disease What type of drug exhibits the most observable effect on the EEG - correct answers ✅Benzodiazepines The onset of sturge-weber disease is typically during: - correct answers ✅infancy A disease that presents with an acoustic startle response within the first few months of life - correct answers ✅Tay sachs disease Voltgae resolution - correct answers ✅analog to digital converter ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Homonymous hemianopsia - correct answers ✅loss of the left or right visual field in both eyes Periodic sharp waves - correct answers ✅CJD Moya moya is associated with: - correct answers ✅decreased blood flow to cerebral tissue What type of seizure begins with the head and eyes turning to one side? - correct answers ✅Adversive sz A patient with a right hemiparesis most likely has a lesion of the left: - correct answers ✅Frontal lobe Proximal - correct answers ✅Near to Distal - correct answers ✅Farther from the trunk of the body most appropriate test to determine cerebral dominance - correct answers ✅intracarotid sodium amytal (wada) What medication class has the most sedative effect on the patient? - correct answers ✅Barbiturates A business associate agreement is required when: - correct answers ✅Medical records are shared Which electrode type gives the LEAST distortion of low frequencies? - correct answers ✅Silver-Silver chloride Balanced impedances allow you to - correct answers ✅Maximize common mode rejection Impedance meter - correct answers ✅measures the opposition to current flow when a known voltage is applied ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Midbrain - correct answers ✅A small part of the brain above the pons that integrates sensory information and relays it upward. what progression of szs is considered rare? - correct answers ✅Rolandic to absence Bell's palsy is characterized by: - correct answers ✅paralysis of facial muscles The neurotransmitter that is lacking in the brain of patient's with parkingson's disease is: - correct answers ✅Dopamine What is the cause of Wernicke's encephalopathy? - correct answers ✅thiamine deficiency Precocious puberty is associated with pathology of the: - correct answers ✅Hypothalamus Hypothalamus - correct answers ✅a neural structure lying below the thalamus; directs eating, drinking, body temperature; helps govern the endocrine system via the pituitary gland, and is linked to emotion Hippocampus - correct answers ✅A neural center located in the limbic system that helps process explicit memories for storage. Limbic system - correct answers ✅A doughnut-shaped system of neural structures at the border of the brainstem and cerebral hemispheres; associated with emotions such as fear and aggression and drives such as those for food and sex. Includes the hippocampus, amygdala, and hypothalamus. Amygdala - correct answers ✅two lima bean-sized neural clusters in the limbic system; linked to emotion. Jackknife seizures - correct answers ✅West syndrome A lesion of the uncus may result in what? - correct answers ✅Olfactory hallucinations ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Inferior(caudal) - correct answers ✅Lower on the body, farther from the head Superior(cranial or cephalad) - correct answers ✅Higher on the body, nearer to the head Anterior (Ventral) - correct answers ✅front Posterior (dorsal) - correct answers ✅Back Medial - correct answers ✅Toward the midline Lateral - correct answers ✅Away from the midline Proximal - correct answers ✅toward or nearest the trunk or the point of orgion Distal - correct answers ✅Away from or furthest from the trunk or point of orgion Coronal Plane (Frontal) - correct answers ✅A vertical plante; divides the body or any of its parts into front and back sides Sagittal Plane (lateral) - correct answers ✅A vertical plane; divides the body or any of its parts into right and left sides. Axial plane (transverse) - correct answers ✅A horizontal plane; divides the body or any of its parts into upper and lower parts babinksi sign - correct answers ✅pathological response to stimulation of the plantar surface of the foot indicated by dorsiflexion of the toes The artery of the Circle of Willis that transports ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ blood from the internal carotid artery to the posterior cerebral artery is the - correct answers ✅Posterior communicating artery Which cranial nerves are associated with eye movement? - correct answers ✅III, IV, and VI Cranial nerve 1 - correct answers ✅Olfactory (smell) Cranial nerve II - correct answers ✅Option - vision Cranial nerve III - correct answers ✅Oculomotor (motor) Cranial nerve IV(4) - correct answers ✅Trochlear (eye movement) Cranial nerve (V) 5 - correct answers ✅Trigeminal Cranial nerve VI (6) - correct answers ✅Abducens Cranial nerve VII (7) - correct answers ✅Facial cranial nerve VIII (8) - correct answers ✅Vestibulocochlear Cranial nerve IX (9) - correct answers ✅Glossopharyngeal Cranial nerve X (10) - correct answers ✅the vagus nerve, which is tested when someone is asked to say "ahh" and watch with soft palate and uvula simultaneously rise in the midline Cranial nerve XI (11) - correct answers ✅Accessory Nerve, Controls the muscles that move the head on the neck. ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Wernicke's area lies: - correct answers ✅posterior part of the superior temporal gyrus temporal gyrus - correct answers ✅divides temporal and parietal from occipital The etiology most commonly associated with LPDS/PLEDS is: - correct answers ✅ischemic stroke The occipital lobe recieves its blood supply directly from which artery? - correct answers ✅Posterior cerebral Seperates the motor cortex from the sensory cortex - correct answers ✅rolandic fissure A blood clot formed at the site of an atherosclerotic plaque - correct answers ✅thrombus Cerebral embolus EEG - correct answers ✅PLEDS arteriovenous malformation - correct answers ✅a tangle of arteries and veins in the brain, associated with a tendency to bleed suddenly Basilar artery - correct answers ✅An artery, formed by the fusion of the vertebral arteries, that supplies blood to the brainstem and to the posterior cerebral arteries. Middle cerebral artery - correct answers ✅Supplies entire lateral cortex Largest branch of internal carotid artery anterior cerebral artery - correct answers ✅Supplies posterior frontal lobe, coropus callosum, BG Damage: cog, judgement, attn, reasoning, possible paralysis feet/legs posterior cerebral artery - correct answers ✅supplies occipital lobe ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Foramen of magendie - correct answers ✅median aperture of fourth ventricle through which CSF flows into the subarachnoid space Arnold-Chiari malformation - correct answers ✅congenital anomalies of the hindbrain with caudal displacement of pons, medulla, and cerebellar vermis Arteriosclerosis - correct answers ✅hardening of the arteries Atherosclerosis - correct answers ✅condition in which fatty deposits called plaque build up on the inner walls of the arteries Horner's syndrome - correct answers ✅ptosis, pupillary miosis, and facial anhydrosis ptosis - correct answers ✅drooping pupillary miosis - correct answers ✅average diameter of pupil decreases somatic nervous system - correct answers ✅A subdivision of the peripheral nervous system. Enables voluntary actions to be undertaken due to its control of skeletal muscles peripheral nervous system - correct answers ✅A division of the nervous system consisting of all nerves that are not part of the brain or spinal cord. autonomic nervous system - correct answers ✅the part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms. which meninge is the innermost closest to the brain? - correct answers ✅Pia White matter in the CNS contains many cell bodies T/F - correct answers ✅false ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ The findings of numerous white matter lesions on an MRi in a patient with MS is due to: - correct answers ✅patches of demyelination and scar formation Accroding to ACNS guidelines, recording clinical eeg on digital media requires monitors to have: - correct answers ✅horizontal scaling and a minimum of 128 data points/second to acurately display EEG on the monitor screen afferent pathway - correct answers ✅flow from receptor to control center (towards brain) efferent pathway - correct answers ✅flow from control center to receptor(away from brain) All electrodes used in END testing should have: - correct answers ✅DIN 42-802 standard connectors Byte - correct answers ✅8 bits Von Recklinghousen's Disease - correct answers ✅cafe-au-lait spots and neurofibromas Cheyne-Stokes respiration - correct answers ✅pattern of breathing characterized by a gradual increase of depth and sometimes rate to a maximum level, followed by a decrease, resulting in apnea What level of constant voltage is likely to cause asystole? - correct answers ✅> 2 A mps what is current measured in - correct answers ✅Amps current - correct answers ✅the flow of electrons pons - correct answers ✅sleep and arousal ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ ventral roots - correct answers ✅bundle of motor neuron axons that exit the spinal cord posterior roots - correct answers ✅fibers carry sensory information anterior horn - correct answers ✅somatic motor neurons whose axons exit the cord via ventral roots If a patient is completely blind in 1 eye, the problem is: - correct answers ✅in the eye itself or the optic nerve Ganglion - correct answers ✅collection of nerve cell bodies in the peripheral nervous system 1st order neurons - correct answers ✅cell bodies in ipsilateral ganglia of PNS 2nd order neurons - correct answers ✅continues to the thalamus at the upper end of the brainstem 3rd order neuron - correct answers ✅thalamus to primary somesthetic cortex of cerebrum mesencephalon - correct answers ✅the midbrain diencephalon - correct answers ✅thalamus and hypothalamus fissures - correct answers ✅deep grooves gyri - correct answers ✅ridges of the brain sutures - correct answers ✅Areas where the cranial bones have joined together white matter - correct answers ✅myelinated axons ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Spinal Nerve Plexuses - correct answers ✅cervical, brachial, lumbar, sacral large opening in the occipital bone - correct answers ✅foramen magnum styloid process - correct answers ✅pole-like process extending downward from the temporal bone on each side of the skull mandibular fossa - correct answers ✅the depression in the temporal bone into which the condyle of the mandible fits mastoid process - correct answers ✅round projection on the temporal bone behind the ear external auditory meatus - correct answers ✅ear canal neuroglia - correct answers ✅cells that support and protect neurons the spinal cord ends at - correct answers ✅L1-L2 cones - correct answers ✅retinal receptor cells that are concentrated near the center of the retina and that function in daylight or in well-lit conditions. The cones detect fine detail and give rise to color sensations. rods - correct answers ✅retinal receptors that detect black, white, and gray; necessary for peripheral and twilight vision, when cones don't respond oligodendrocytes - correct answers ✅produce myelin in CNS astrocytes - correct answers ✅Provide structural and metabolic support for neurons. ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ microglia - correct answers ✅Act as phagocytes, eating damaged cells and bacteria, act as the brains immune system ependyma - correct answers ✅membrane lining the central canal of the spinal cord and the ventricles of the brain pairs of spinal nerves - correct answers ✅31 8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccygeal horizontal resolution - correct answers ✅number of data points that are stored to record a signal in each second across time QD - correct answers ✅one per day BID - correct answers ✅twice a day TID - correct answers ✅three times in a day same signs - correct answers ✅subtract different signs - correct answers ✅add If a 10 µV (input to the amplifier), 1 Hz wave was recorded using a 1 Hz low frequency analog filter, what would the voltage measure in a print out? - correct answers ✅7 uV GPEDS - correct answers ✅generalized periodic epileptiform discharge ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Measures the opposition to current flow when a known voltage is applied - correct answers ✅Impedance meter For lff, the corresponding time constant for lff cutoff freq of 3 hz would be - correct answers ✅.05 seconds Most appropriate test for determining cerebral dominance - correct answers ✅Intracarotid sodium Amytal (wada) The etiology most commonly associated with LPDS/PLEDS - correct answers ✅Ischemic stroke A patient with a right hemiparesis most likely has a lesion of the left - correct answers ✅Frontal lobe Time constant 0.5 sec - correct answers ✅High pass filter 0.3 hz Standard of conduct for credentialed techs - correct answers ✅Abret code of ethics Posterior cerebral artery supplies blood to the - correct answers ✅Visual cortex Most important source generator of the eeg - correct answers ✅Pyramidal dendritic PSPs To enhance the background alpha and beta asymmetry in an Eeg record showing high voltage delta activity the tech should - correct answers ✅Shorter time constant and increased sensitivity Dysarthria - correct answers ✅Impaired speech Acute cerebral infarction - correct answers ✅Pleds A business associate agreement is required when - correct answers ✅Medical records are shared ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ When testing an outpt with active tuberculosis it is necessary for the - correct answers ✅Patient to wear a mask At what age do encoches frontals first appear - correct answers ✅34-37 wks CA A lesion of the uncus - correct answers ✅Olfactory hallucinations 14 6 positive spikes are best demonstrated with a reference to - correct answers ✅Contralateral ear Laplacian montgae - correct answers ✅Source reference derivation Cerebral embolus - correct answers ✅Pleds Broca's area lies - correct answers ✅Posterior part of the interior frontal gyrus What med has most sedative effect on pt - correct answers ✅Barbiturates Sharply contoured, surface positive, seen in clusters over occipital lobe during drowsiness - correct answers ✅POSTS Delta brush pattern primarily seen - correct answers ✅32-34 wks CA Mathematically converts time function into a sine wave of different frequencies - correct answers ✅Fast Fourier transform Herchls gyrus - correct answers ✅Auditory aura Incidence - correct answers ✅Number of new cases which occur in a defined population over a period of time ASAP EEG Study Guide Questions and Answers (Latest Update 2024) GRADED A+ Prevalence - correct answers ✅The number of cases in a defined population at any given moment The right vagus nerve innervates - correct answers ✅SA node The left vagus nerve innervates - correct answers ✅AV node Using a constant voltage, what is the maximum current a person can grasp and probably still "let go"? - correct answers ✅a. 16mA What level of constant voltage is likely to cause asystole? - correct answers ✅d. >2A Current is: - correct answers ✅a. the flow of electrons through a pathway and the unit is the Ampere predictive value - correct answers ✅Information is useful in predicting the future prodome - correct answers ✅symptoms that appear before an illness Sensitivity - correct answers ✅The probability of a test being positive in a patient with the disease Specificity - correct answers ✅probability that a test will be negative in a patient without the disease Major cause of aseptic meningitis - correct answers ✅Viral The brain, on average, is _ of total body weight but used _ of cardiac output and _ of oxygen consumption - correct answers ✅2,15,20 aniography - correct answers ✅X-ray exam of blood vessels using an injected contrast agent