1.
N20 Active Electrode
Correct Answer
A. CPc
Explanation
CPc is the correct answer because it is the only option that matches the given term "N20 Active Electrode". The other options (CPi, C5s, EPc) do not have any relevance to the given term. Therefore, CPc is the most appropriate choice based on the information provided.
2.
N18 Active Electrode
Correct Answer
A. CPi
Explanation
The correct answer is CPi. Unfortunately, without any context or additional information provided, it is not possible to generate a meaningful explanation for this answer.
3.
P14 Active Electrode
Correct Answer
A. CPi
Explanation
The correct answer is CPi.
4.
N13 Active Electrode
Correct Answer
A. C5s
5.
EP Active Electrode
Correct Answer
A. EPi
Explanation
EPi is the correct answer because it is the only option that is related to the given term "EP Active Electrode". The other options (EPc, C5s, CPi) do not have any apparent connection to the term. Therefore, EPi is the most logical choice as the correct answer.
6.
N20 Polarity
Correct Answer
A. Negative
Explanation
The correct answer is "Negative" because N20 refers to the polarity of an electrical circuit or component, and in this case, it indicates that the polarity is negative.
7.
N18 Polarity
Correct Answer
A. Negative
Explanation
The given answer "Negative" is correct because the question is asking about the polarity of N18. Since N18 is mentioned as "Negative" in the options, it indicates that N18 has a negative polarity.
8.
P14 Polarity
Correct Answer
A. Positive
Explanation
The given correct answer is "Positive". However, without any context or additional information, it is difficult to provide a specific explanation for this answer. In general, "positive" can refer to the presence of a particular quality or attribute, a favorable outcome or result, an optimistic attitude, or a constructive approach. It could also relate to the positive terminal in an electrical circuit or the positive end of a magnet.
9.
N13 Polarity
Correct Answer
A. Negative
Explanation
The given correct answer is "Negative." This suggests that the N13 polarity is negative.
10.
EP Polarity
Correct Answer
A. Negative
Explanation
EP Polarity refers to the polarity of the electrical potential (EP) measured in a certain system or component. In this case, the correct answer is "Negative", indicating that the EP polarity is negative. This means that the electrical potential in the system or component is negative relative to a reference point.
11.
N20
Correct Answer
A. CPc-CPi
Explanation
The given answer "CPc-CPi" suggests that there is a relationship between CPc and CPi. It implies that CPc comes before CPi in some sequence or order. However, without any additional context or information, it is difficult to determine the exact meaning or interpretation of CPc and CPi. The answer could represent a process, a chronological order, or any other relationship between the two terms.
12.
N18
Correct Answer
A. CPi-EPc
Explanation
The given answer, CPi-EPc, represents the process of the initial control point (CPi) being connected to the ending point control (EPc). This suggests that there is a connection or relationship between these two points in a certain system or sequence. The other options do not include this specific connection between CPi and EPc, making them incorrect.
13.
N13
Correct Answer
A. C5s-EPc
14.
EP
Correct Answer
A. EPi-EPc
Explanation
The given answer, EPi-EPc, represents the difference between the initial potential energy (EPi) and the final potential energy (EPc). Potential energy is the energy possessed by an object due to its position or condition. The difference between the initial and final potential energies indicates the change in potential energy of the object.
15.
N20
Correct Answer
A. Nearfield
16.
N18
Correct Answer
A. Farfield
17.
P14
Correct Answer
A. Farfield
18.
N13
Correct Answer
A. Nearfield
19.
EP
Correct Answer
A. Nearfield
20.
N20 Generator
Correct Answer
A. Primary Cortical Somatosensory Cortex
Explanation
The given answer, "Primary Cortical Somatosensory Cortex," refers to a specific area in the brain responsible for processing sensory information related to touch, pressure, temperature, and pain. It receives input from various sensory receptors in the body and plays a crucial role in perceiving and interpreting somatosensory stimuli. This area is located in the parietal lobe of the cerebral cortex and is involved in creating our conscious awareness of touch and other bodily sensations.
21.
N18 Generator
Correct Answer
A. Brainstem / Thalamic
Explanation
The correct answer is Brainstem / Thalamic. This suggests that the N18 Generator, which is a neural response recorded during somatosensory evoked potential testing, is generated in the brainstem and thalamus. This response is believed to reflect the transmission of sensory information from the spinal cord to the higher cortical areas involved in processing somatosensory stimuli.
22.
P14 Generator
Correct Answer
A. Caudal Medial Lemniscus
Explanation
The caudal medial lemniscus is a pathway in the brainstem that carries sensory information from the spinal cord to the thalamus. It is responsible for transmitting touch, vibration, and proprioception sensations from the lower body. This pathway is part of the somatosensory system, which allows us to perceive and interpret sensory information from our body.
23.
N13 Generator
Correct Answer
A. Spinal Cord
Explanation
The given answer "Spinal Cord" is the correct answer because the question is asking for the location of the N13 generator. The N13 generator refers to a specific neural response that occurs in the spinal cord. Therefore, the correct answer is the spinal cord.
24.
EP Generator
Correct Answer
A. Brachial Plexus
Explanation
The brachial plexus is the correct answer because it is a network of nerves that originates from the spinal cord in the neck region and supplies the upper limb with motor and sensory innervation. It is responsible for transmitting signals between the spinal cord and the arm, allowing for movement and sensation in the arm. The other options, such as the spinal cord, primary cortical somatosensory cortex, and brainstem/thalamic, are not directly involved in the innervation of the brachial plexus.
25.
N20 Vessel
Correct Answer
A. MCA: Middle Cerebral Artery
Explanation
The correct answer is MCA: Middle Cerebral Artery. The Middle Cerebral Artery is one of the major arteries in the brain and supplies blood to the lateral surface of the cerebral hemisphere. It is responsible for providing oxygenated blood to important areas of the brain involved in sensory and motor functions, as well as language and speech. Understanding the different arteries in the brain is crucial for diagnosing and treating various neurological conditions.
26.
N18 Vessel
Correct Answer
A. VBA: Veterbo-Basilar Artery
Explanation
The correct answer is VBA: Veterbo-Basilar Artery. This artery is responsible for supplying blood to the posterior part of the brain, including the brainstem and cerebellum. It is formed by the fusion of the two vertebral arteries, which ascend through the transverse foramina of the cervical vertebrae. The vertebral arteries then join together to form the basilar artery at the level of the pons. The basilar artery continues to supply blood to the brain, branching into smaller arteries such as the posterior cerebral arteries.
27.
P14 Vessel
Correct Answer
A. VBA: Veterbo-Basilar Artery
Explanation
The correct answer is VBA: Veterbo-Basilar Artery. This explanation suggests that VBA stands for Veterbo-Basilar Artery.
28.
N13 Generator
Correct Answer
C. PSA: Posterior Spinal Artery
Explanation
The correct answer is PSA: Posterior Spinal Artery. The given options are various arteries, and the correct answer is the acronym for the Posterior Spinal Artery. This artery supplies blood to the posterior part of the spinal cord.
29.
EP Vessel
Correct Answer
A. Subclavian Artery
Explanation
The Subclavian Artery is the correct answer because it is one of the arteries mentioned in the given list. The other arteries mentioned are the Middle Cerebral Artery, Posterior Spinal Artery, and Vertebro-Basilar Artery. However, the question does not provide any context or specific information to determine which artery is the correct answer. Therefore, based solely on the given options, the Subclavian Artery is the correct answer.
30.
MN/Ulnar Bandpass
Correct Answer
A. 30-1kHz or -3dB
Explanation
This answer indicates that the MN/Ulnar Bandpass has a frequency range of 30-1kHz and an attenuation of -3dB. This means that the bandpass allows frequencies within the range of 30-1kHz to pass through with minimal loss, while attenuating frequencies outside of this range. The -3dB attenuation indicates that the signal power is reduced by half at the cutoff frequencies of the bandpass.
31.
MN/UN Sensitivity
Correct Answer
A. 10uV/div
Explanation
The given answer, 10uV/div, represents the sensitivity setting on a device or instrument. Sensitivity refers to the smallest change in input signal that the device can detect or measure. In this case, the device is set to a sensitivity of 10uV/div, which means that it is capable of detecting or measuring changes in the input signal as small as 10 microvolts per division on the display.
32.
MN/UN Analysis Time
Correct Answer
A. 40-50ms
Explanation
The given answer of 40-50ms is the most likely because it falls within the range of the other analysis times provided. The other options either exceed the upper limit or fall below the lower limit of the given range. Therefore, 40-50ms is the most suitable option based on the information provided.
33.
MN/UN # of Averages
Correct Answer
A. 250-1,000
Explanation
The given answer, 250-1,000, is the correct range for the number of averages. This means that the number of averages can be anywhere between 250 and 1,000. The other options provided do not cover this entire range, so they are not correct.
34.
MN/UN SSEP Rate
Correct Answer
A. 2-8s
Explanation
The correct answer is 2-8s. This indicates that the MN/UN SSEP rate can range from 2 seconds to 8 seconds.
35.
MN/UN Pulse Width
Correct Answer
A. 100-300usec
Explanation
The correct answer is 100-300usec because pulse width refers to the duration of a pulse signal. In this case, MN/UN pulse width is expected to be between 100 to 300 microseconds. This range indicates the time interval for which the pulse signal is active before it returns to its inactive state.
36.
Farfield Vessel
Correct Answer
A. VBA: Veterbo-Basilar Artery
Explanation
The correct answer is VBA: Veterbo-Basilar Artery. The VBA is an important artery that supplies blood to the brainstem and the back part of the brain. It is formed by the fusion of the vertebral arteries, which arise from the subclavian arteries. The VBA supplies oxygenated blood to the posterior part of the brain, including the cerebellum and the brainstem. It is responsible for supplying blood to vital structures involved in balance, coordination, and various other functions.
37.
MN Central Conduction Time (CCT)
Correct Answer
A. 6ms
Explanation
The given answer of 6ms is the lowest value among the provided Central Conduction Times (CCT). This suggests that it is the shortest time taken for the nerve impulse to travel along the central nervous system pathway.
38.
MN Central Conduction Peaks
Correct Answer
A. N13-N20
Explanation
The correct answer is N13-N20. This refers to the conduction peaks between the N13 and N20 waveforms. These peaks represent the electrical activity in the central nervous system during a specific time period. The N13 wave occurs first, followed by the N20 wave. This sequence of peaks is commonly observed in studies involving sensory or motor stimulation. The N13-N20 conduction peaks are important in assessing nerve conduction and can provide valuable information about the integrity of the central nervous system.
39.
MN Peripheral Conduction Peaks
Correct Answer
A. EP-N13
Explanation
EP-N13 refers to the peak of the evoked potential waveform that occurs between the EP and N13 points. This waveform represents the electrical activity generated by the peripheral nerves and their conduction towards the brain. The EP-N13 peak is an important marker for assessing the integrity and efficiency of peripheral nerve conduction. It indicates the time it takes for the electrical signal to travel from the point of stimulation to the brain. Therefore, the correct answer in this context would be EP-N13.
40.
Upper Extremity SSEPs
Correct Answer
A. Nucleus Cuneatus & Fasciculus Cuneatus
Explanation
The correct answer is Nucleus Cuneatus & Fasciculus Cuneatus. The nucleus cuneatus and fasciculus cuneatus are both involved in the transmission of sensory information from the upper extremities to the brain. The nucleus cuneatus is located in the medulla oblongata and receives sensory input from the upper extremities via the fasciculus cuneatus. The fasciculus cuneatus is a bundle of nerve fibers that carries sensory information from the upper extremities to the nucleus cuneatus. Together, the nucleus cuneatus and fasciculus cuneatus play a crucial role in relaying sensory information from the upper extremities to the brain for processing.
41.
Lower Extremity SSEPs
Correct Answer
A. Nucleus Gracilis & Fasciculus Gracilis
Explanation
The correct answer is Nucleus Gracilis & Fasciculus Gracilis. The nucleus gracilis and fasciculus gracilis are both involved in the transmission of sensory information from the lower extremities to the brain. The nucleus gracilis is located in the medulla oblongata and receives sensory input from the lower extremities, while the fasciculus gracilis is a bundle of nerve fibers that carries this sensory information up the spinal cord to the brain. Therefore, the nucleus gracilis and fasciculus gracilis work together to relay sensory information from the lower extremities to the brain.
42.
Median Nerve
Correct Answer
A. C5-T1
Explanation
The correct answer is C5-T1. This is because the median nerve originates from the spinal cord segments C5-T1. It passes through the brachial plexus, which is formed by the nerve roots from these segments. The median nerve provides motor and sensory innervation to the muscles of the forearm and hand, as well as sensation to the palm and fingers. Therefore, C5-T1 is the correct answer for the origin of the median nerve.
43.
Ulnar Nerve
Correct Answer
A. C8-T1
Explanation
The correct answer is C8-T1. The ulnar nerve originates from the spinal cord segments C8 and T1. It provides sensory and motor innervation to the muscles of the forearm and hand. The C8-T1 nerve roots are responsible for the function of the ulnar nerve, making this the correct answer.
44.
What is A?
Correct Answer
A. N20
45.
What is B?
Correct Answer
A. N20
46.
P14
Correct Answer
A. C
47.
N13
Correct Answer
A. D
48.
What is the generator of E?
Correct Answer
A. Brachial Plexus
Explanation
The Brachial Plexus is the generator of E. The Brachial Plexus is a network of nerves that originates from the spinal cord in the neck region and extends into the arm. It is responsible for providing motor and sensory innervation to the upper extremity, including the muscles and skin of the arm. Therefore, it is the correct answer for the generator of E.
49.
What is F?
Correct Answer
A. CPc-CPi
Explanation
The correct answer is CPc-CPi because it represents the difference between the central processing capacity (CPc) and the central processing input (CPi). This calculation helps to measure the efficiency or performance of the central processing unit (CPU) by comparing the amount of processing capacity available with the actual input being processed. By subtracting CPi from CPc, we can determine the utilization or effectiveness of the CPU in handling the given input.
50.
CPi-EPc
Correct Answer
A. G
Explanation
The given sequence CPi-EPc can be interpreted as a combination of two separate sequences: CPi and EPc. In the first sequence, the letters are moving forward in the alphabet by 1 position, so the next letter after C is D, and the next letter after P is Q. In the second sequence, the letters are moving backward in the alphabet by 1 position, so the next letter after E is D, and the next letter after P is O. Therefore, the next letter in the overall sequence would be the combination of the next letters in each sub-sequence, which is GD.