NDT 200 - EEG Instrumentation

Module 1:  Objectives (lesson 1)

• Describe the structure of atoms and ions.
• List four characteristics of electrical charge.
• Define voltage, resistance, and current and how they are related according to Ohms Law.
• Define conductance and list three materials that are good conductors.
• Calculate the total resistance of resistors in series and in parallel.
• Describe a capacitor.
• Define alternating and direct current.
• Describe how impedance is measured.
• Explain the need for electric isolation in NDT Instruments.
• Relate the use of optical isolation to electrical safety.
• Differentiate the use of a ground/common electrode in optically isolated instruments compared to instruments without patient isolation.

Module 1:  Assignments

• Complete Links:

• ASET Reading Material 1
• How Electricity Works
• Atoms & Molecules

• Complete Quiz 1
• Complete and submit Assignment 1

Module 2:  Objectives (lesson 2)

• Explain the functions of the various components of the electroencephalograph including the head box, power supply and differential amplifier.
• Explain the concept of Common Mode Rejection and related Common Mode Rejection Ratio.
• Explain alternating and direct current.
• Explain sources of electrical interference and how to minimize 60 Hz artifact.

(lesson 3)

•  Explain calibration, biological calibration and system reference calibration.
• Define electrode derivation and montage. 
   
• Explain how a montage functions to examine EEG and localize activity.
• Define the various types of montages, their usefulness, and localization methods (Reference, A-P Longitudinal, Transverse, and Circumferential bipolar montages).
• Design a referential and bipolar montage that complies with ACNS Guidelines in EEG.
• Describe the rules of localizing a focus.

Module 2:  Assignments

• Read Pgs 89-123 in “Practical Approach…”text

• Complete Links:

• ASET Reading Material 2
• ASET Reading Material 3 Montages and Calibration

• Complete Quizzes 2 & 3

Module 3:  Objectives (lesson 4)

• Define frequency.
• Describe the basic electronics of analog filters.
• Review sources of unwanted signal contamination.
• Understand the role of frequency response curves.

Module 3:  Assignments

• Read Pgs 146-170 in “Practical Approach…” text
• Complete Links:

• ASET Presentation Understanding Filters
• Presentation notes

• Complete Quiz 4

Module 4:  Objectives (lesson 5)

• Identify the functions of a differential amplifier and explain how waveform displays are affected by:  low, high and 60 Hertz filter settings.
• Define the term time constant and understand its relationship to low filters.
• Describe methods to improve recording quality and appropriate use of the Low, High and Notch filters. 
• Plot frequency response curves and determine attenuation effects on wave forms.

Module 4:  Assignments

Review: “Practical Approach…’pgs 146-170

• Complete Links:

•  ASET Reading Material Lesson 5
• ASET 2016 Filters Presentation-Todd Ham
• ASET Presentation Filters-Walt Banoczi
• Walt Banoczi Notes from presentation
• Frequency Response Curve-Print for Assignment 2

• Complete and Submit Assignment 2
• Complete Quiz 5

Module 5: Objectives (lesson 6)

• Explain the functions of the sensitivity setting on the electroencephalograph.
• Explain how to calculate voltages of EEG discharges.
• Describe acceptable sensitivity settings for calibration and EEG data collection.
• Identify the post-hoc manipulation related to sensitivity options with digital EEG recording

(lesson 7)

• Describe the function of chart speed/time base/epoch etc.
• Recognize different time base settings and their effects on the EEG recording.
• Explain the relationship between frequency & duration.
• Calculate the frequency & duration of wave forms using correct methods and formulas.
• Describe square wave and biological calibration
• Explain digital calibration or system check

Module 5:  Assignments

• Complete Links:

• ASET Reading Material Lesson 6
• ASET Reading Material Lesson 7
• ASET Article Calculating Frequency & Duration
• ASET Article: Calculating Frequency & Duration Using a Legend

• Complete and Submit Assignment 3
• Complete Quizzes 6 & 7

Module 6:  Objectives (lesson 8)

• Describe the type of injuries caused by electricity.
• Describe how voltage, resistance and current affect the severity of injuries.
• Describe how the path of the electrical current affects the severity of injuries.
• Define micro-shock; explain which patients are susceptible to micro-shock and why.
• Describe the function of the three holes in a three-prong outlet.
• List three sources of current in the chassis of an electrical instrument.
• Define a ground loop; describe how it can injure a patient and how it can be prevented.
• State the maximum  allowable  leakage  current at  the  instrument  chassis and at  the electrode site.
• List additional safety measures to be used with bedside recordings.

Module 6:  Assignments

• Complete Link:

• ASET Reading Material Lesson 8

• Complete Quiz 8

Module 7:  Objectives (lesson 9)

• Understand the minimum standards for both horizontal and vertical resolution.
• Identify the post-acquisition manipulation options with digital EEG recording.
• Given descriptions for storage and retrieval media.
• Describe Topographic Brain Mapping and FFT.

Module 7:  Assignments

• Complete Links:

• ASET Reading Material Lesson 9
• Digital Instrumentation-Audio File
• Digital Instrumentation-Notes for Audio File

• Complete and Submit Assignment 4
• Complete Quiz 9

Grading Scale

91-100%     =  4.0   Excellent

86-90.9%    =  3.5

81-85.9%    =  3.0   Good

76-80.9%    =  2.5   Satisfactory and Passing

71-75.9%    =  2.0   Not Passing

66-70.9%    =  1.5

60-65.9%    =  1.0

0-59.9%      =  0.0