Neurophysiology_THREE

The numbers in the “International 10-20” system of electrode placement refer to

• The number of electrode that can be placed

• The angles between adjacent electrode, in degrees

• The distance along various anatomical planes, in percent of the total length

• The electrical potential, in microvolts, that the system is designed to measure

Alpha variant may

i. Block with eye opening

ii. Be a harmonic (fast) frequency of normal alpha

iii. Be a subharmonic (slow) frequency of normal alpha

iv. Be sporadic, intermingling with normal alpha predominate

• i, ii & iii.

• i, ii & iv.

• i, iii & iv.

• i, ii, iii & iv

Mu has features that may include

i. An arciform appearance

ii. More common in adults vs children

iii. Predominantly found at the C3 and /or C4 contacts

iv. Blocking with contralateral upper extremity use or planned use

• i, ii & iii.

• ii, iii & iv.

• i, ii & iv.

• i, ii, iii & iv

Which of the following is a significant side-effect of Transcranial Magnetic Stimulation?

• Headache

• Cognitive impairment

• Neuropathological change

• None of the above.

What electrode is halfway between T3 and T4?

• PZ

• C3

• CZ

• F4

During NCS, inadequate warming of a limb will have the most marked effect on

• duration

• amplitude

• decrement

• distal latency

For which one of the following neuromuscular diseases, is nerve conduction study (NCS)/electromyography (EMG) the first choice as a diagnostic test?

• Mitochondrial myopathy

• Spinal muscular atrophy (SMA)

• Hereditary motor sensory neuropathies (HMSNs)

• Acute inflammatory demyelinating polyneuropathy (AIDP/Guillain-Barré syndrome [GBS])

Anterior cerebral blood circulation includes

• basilar artery

• vertebral artery

• cerebellar arteries

• middle cerebral artery

The followings EEG pattern presence on normal sleep pattern

i. K complex

ii. Breach rhythm

iii. Small Sharp Spikes (SSS)

iv. Vertex sharp transient

• i, ii & iii.

• i, iii & iv.

• i, ii & iv.

• ii, iii & iv

Which of followings abnormalities are related to corresponding epileptic syndrome

       i. hypsarrhythmia – infantile spasms 

       ii. hz spike and wave complexes – absence seizures 

iii. diffuse background slowing – acute encephalopathy 

      iv. burst-suppression pattern – benign rolandic epilepsy

 

• i, ii & iii.

• i, ii & iv.

• i, iii & iv.

• ii, iii & iv