AASM Manual 2025/2026 Exam
Questions and Verified Answers |
Already Graded A+
What are the recommended derivations? - 🧠ANSWER ✔✔There are 3;
(a)F4-M1; (b)C4-M1; (c)O2-M1
Where should backup electrodes be placed? Why? - 🧠ANSWER ✔✔They
should be placed at F3, C3, and M2 to allow the display of F3-M2, C3-M2,
and O1-M2 if the electrodes malfunction during the study.
What are alternative and acceptable derivations? - 🧠ANSWER ✔✔There
are 3; (a)F2-C2, (b)C2-O2, (c)C4-M1
Where should alternative backup electrodes be placed? Why? - 🧠ANSWER
✔✔They should be placed at Fpz, C3, O1, and M2 to allow substitution of
,Fz, C3 for Cz or C4, O1 for O2 and M2 for M1 if electrodes malfunction
during study.
What system is used for electrode positioning? Why? - 🧠ANSWER ✔✔10-
20 system; there is a minimum of 3 EEG derivations required in order to
sample activity from the frontal, central, and occipital regions.
What does "EOG" stand for? - 🧠ANSWER ✔✔Electro-Oculogram
What does M1 and M2 refer to? - 🧠ANSWER ✔✔They refer to the left/right
mastoid processes.
What is the recommended EOG derivations? Where are they placed? -
🧠ANSWER ✔✔The recommended derivations are E1-M2 and E2-M1. E1-
M2 is placed 1cm below the left-outer corner of the eye and E2-M1 is
placed 1cm above the right-outer corner of the eye.
What are the alternative and acceptable derivations for EOGs and where
should they be placed? - 🧠ANSWER ✔✔E1-Fpz and E2-Fpz; E1-Fpz is
placed 1cm lateral to the corner of the left eye and E2-Fpz is placed 1cm
lateral to the corner of the right eye.
Describe how using the alternative placement for EOGs (lateral of the
left/right corner of the eye) works - 🧠ANSWER ✔✔This alternative records
, the direction of the eye movement. Vertical movements will show in phase
directions and horizontal movement will show out-of-phase deflections.
What does "EMG" stand for? - 🧠ANSWER ✔✔Electromyogram
How many electrodes should be placed to record chin EMG? Where should
they be placed? - 🧠ANSWER ✔✔-3 electrodes
-one in the midline 1cm above the inferior edge of the mandible, one 2cm
right of the midline, and one 2cm below the inferior edge of the mandible
Why do we use these standard placements for chin EMGs? - 🧠ANSWER
✔✔The standard chin EMG derivation consists of an electrode below the
mandible that is referenced to the electrode above the mandible. The other
inferior electrode is backup to allow continued display of EMG activity if one
of the primary electrodes malfunctions.
What is the recommended terminology for stages of sleep? - 🧠ANSWER
✔✔There are 5 stages: W (wakefulness), N1, N2, N3 and R (REM)
What does N3 represent? - 🧠ANSWER ✔✔Slow wave sleep
How long is an epoch? - 🧠ANSWER ✔✔30 seconds
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Questions and Verified Answers |
Already Graded A+
What are the recommended derivations? - 🧠ANSWER ✔✔There are 3;
(a)F4-M1; (b)C4-M1; (c)O2-M1
Where should backup electrodes be placed? Why? - 🧠ANSWER ✔✔They
should be placed at F3, C3, and M2 to allow the display of F3-M2, C3-M2,
and O1-M2 if the electrodes malfunction during the study.
What are alternative and acceptable derivations? - 🧠ANSWER ✔✔There
are 3; (a)F2-C2, (b)C2-O2, (c)C4-M1
Where should alternative backup electrodes be placed? Why? - 🧠ANSWER
✔✔They should be placed at Fpz, C3, O1, and M2 to allow substitution of
,Fz, C3 for Cz or C4, O1 for O2 and M2 for M1 if electrodes malfunction
during study.
What system is used for electrode positioning? Why? - 🧠ANSWER ✔✔10-
20 system; there is a minimum of 3 EEG derivations required in order to
sample activity from the frontal, central, and occipital regions.
What does "EOG" stand for? - 🧠ANSWER ✔✔Electro-Oculogram
What does M1 and M2 refer to? - 🧠ANSWER ✔✔They refer to the left/right
mastoid processes.
What is the recommended EOG derivations? Where are they placed? -
🧠ANSWER ✔✔The recommended derivations are E1-M2 and E2-M1. E1-
M2 is placed 1cm below the left-outer corner of the eye and E2-M1 is
placed 1cm above the right-outer corner of the eye.
What are the alternative and acceptable derivations for EOGs and where
should they be placed? - 🧠ANSWER ✔✔E1-Fpz and E2-Fpz; E1-Fpz is
placed 1cm lateral to the corner of the left eye and E2-Fpz is placed 1cm
lateral to the corner of the right eye.
Describe how using the alternative placement for EOGs (lateral of the
left/right corner of the eye) works - 🧠ANSWER ✔✔This alternative records
, the direction of the eye movement. Vertical movements will show in phase
directions and horizontal movement will show out-of-phase deflections.
What does "EMG" stand for? - 🧠ANSWER ✔✔Electromyogram
How many electrodes should be placed to record chin EMG? Where should
they be placed? - 🧠ANSWER ✔✔-3 electrodes
-one in the midline 1cm above the inferior edge of the mandible, one 2cm
right of the midline, and one 2cm below the inferior edge of the mandible
Why do we use these standard placements for chin EMGs? - 🧠ANSWER
✔✔The standard chin EMG derivation consists of an electrode below the
mandible that is referenced to the electrode above the mandible. The other
inferior electrode is backup to allow continued display of EMG activity if one
of the primary electrodes malfunctions.
What is the recommended terminology for stages of sleep? - 🧠ANSWER
✔✔There are 5 stages: W (wakefulness), N1, N2, N3 and R (REM)
What does N3 represent? - 🧠ANSWER ✔✔Slow wave sleep
How long is an epoch? - 🧠ANSWER ✔✔30 seconds
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
