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WorksheetsElectrophysiology
Total questions: 15
Worksheet time: 15mins
The click is often used in abr stimulation because it evokes;
A frequency-specific response
Synchronous neural firing
Otoacoustic emissions that, in turn, produce the ABR
An specific ABR without the need for masking
None of the above
Which type of neuron is thought to be involved in generation of ABR
Pauser neurons
Inner hair cells
Offset neurons
Chopper neurons
Onset neurons
The ABR wave V evoked by the stimulation of the right ear is generated from ......
The inferior colliculus on the rt side of brainstem
The lateral lemniscus on the left side of the brainstem
The lateral lemniscus on the right side of the brainstem
The inferior colliculus on the left side of the brain stem
Which dipole orientation is generate higher amplitude in evoked potentials
Open field orientation of neurons
Closed loop orientation of neurons
Open and close field orientation
Amplitude has no correlation with dipole orientation
Which of the following best describes the relation between abr wave v latency and tone burst frequency
Latency decreases as tone burst frequency decreases
Absolute latency is constant but inter-wave latency increases
There is no systematic relation
Latency increases as tone burst frequency decreases
Latency is increased only for 500 hz versus click stimulus
Choose the correct statement
Wave I consists of relatively lower frequency energy whereas wave v receives a greater contribution from higher frequencies
Wave I consists of relatively high frequency energy whereas wave V receives a greater contribution from lower frequencies
Wave I and wave V consists of high frequencies only
Wave I and wave V consists of low frequencies only
What information is critical for filter settings used in recording AERs
Frequency of the stimulus
Amplitude of the response
Stimulus rate
Spectrum of the response
Age of the patient
What is the term used for a technique used in obtaining an adequate SNR in AER recording
Notch filtering
Re-amplification
Artifact enhancement
Common mode detection
Signal averaging
P300, AMLR, ALLR- find out the correct pairs from the options
Endogenous, Endogenous, Endogenous
Endogenous, Exogenous, both endogenous and exogenous
Endogenous, endogenous, both endogenous and exogenous
Exogenous, endogenous, exogenous
Endogenous, both, both
Reducing the low pass filter cutoff from 3000 to 1500Hz results;
Increasing absolute latencies and producing smoothing effect on waveform
Decreaseing absolute latencies and produce smoothing effect on the waveform
Increasing absolute latencies and producing sharper effect on waveform
Poducing sharper waveform
Which all are the following is not a method for reducing noise from a recording
Placing the client far from electrical circuits in the test room
Checking make sure that the impedance is less than 5ohms
Instructing the client to relax
Complete the recording with less than 1000 sweeps
In wavelet transform analysis, at which frequencies we get good time resolution and poor frequency resolution
High frequencies
Low frequencies
Mid frequencies
High and low frequencies
No relationship with frequencies
What is the duration of the click stimulus
100 microseconds
100 milliseconds
100 seconds
1000 microseconds
In the 10-20 system, the distance between the nasion to Cz is
20%
40%
50%
60%
10%
Dipole generated from which cells
Pyramidal cells
Octopus cells
Fan cells
Giant cells
