Normal EEG Patterns - Sleep

What is the activity in the box?

• POSTS

• V Wave

• Spindles

• K Complex

• Rapid eye movement

Answer explanation

POSTS = Positive Occipital Sharp Transients of Sleep

Occurs during Stages N1 or N2 of sleep

What is the activity in the box?

• POSTS

• V Wave

• Spindles

• K Complex

• Rapid eye movement

Answer explanation

K-Complex: high amplitude Delta wave with after-going spindle

May occur with or without stimulus

Occurs during Stage N2 sleep

What is the activity in the box?

• POSTS

• V Wave

• Spindles

• K Complex

• Rapid eye movement

Answer explanation

V-waves: "vertex waves"

Phase reversal maximal at Cz

Occurs during Stages N1 or N2 of sleep

What is the main activity for this stage of sleep?

• POSTS

• V Wave

• Slow rolling eye movements

• K Complex

• Rapid eye movements

Answer explanation

REM = Rapid Eye Movements

"Batman ears"

What is/are the sleep pattern(s) for this sleep sample?

• POSTS

• V Wave

• Spindles

• K Complex

• Slow rolling eye movements

Answer explanation

POSTS = Positive Occipital Sharp Transients of Sleep

Occurs during Stages N1 or N2 of sleep

 

V-waves: "vertex waves"

Phase reversal maximal at Cz

Occurs during Stages N1 or N2 of sleep

 

Slow-rolling eye movements: prolonged, slow movements with pen deflection in F7 and F8

What is/are the sleep pattern(s) for this sleep sample?

• POSTS

• V Wave

• Spindles

• K Complex

• Slow rolling eye movements

Answer explanation

Slow-rolling eye movements: prolonged, slow movements with pen deflection in F7 and F8

V-waves: "vertex waves"

Phase reversal maximal at Cz

Occurs during Stages N1 or N2 of sleep

POSTS = Positive Occipital Sharp Transients of Sleep

Occurs during Stages N1 or N2 of sleep

What is/are the sleep pattern(s) for this sleep sample?

• POSTS

• V Wave

• Spindles

• K Complex

• Slow rolling eye movements

Answer explanation

Slow-rolling eye movements: prolonged, slow movements with pen deflection in F7 and F8

V-waves: "vertex waves"

Phase reversal maximal at Cz

Occurs during Stages N1 or N2 of sleep

POSTS = Positive Occipital Sharp Transients of Sleep

Occurs during Stages N1 or N2 of sleep

Spindles: fast alpha, slow beta

Duration ~0.5 - 1 second

Centrally located

What is/are the sleep pattern(s) for this sleep sample?

• POSTS

• V Wave

• Spindles

• K Complex

• Slow rolling eye movements

Answer explanation

POSTS = Positive Occipital Sharp Transients of Sleep

Occurs during Stages N1 or N2 of sleep

 

V-waves: "vertex waves"

Phase reversal maximal at Cz

Occurs during Stages N1 or N2 of sleep

 

Spindles: fast alpha, slow beta

Duration ~0.5 - 1 second

Centrally located

Occurs during Stage N2 of sleep

What is/are the sleep pattern(s) for this sleep sample?

• POSTS

• V Wave

• Spindles

• K Complex

• Slow rolling eye movements

Answer explanation

POSTS = Positive Occipital Sharp Transients of Sleep

Occurs during Stages N1 or N2 of sleep

V-waves: "vertex waves"

Phase reversal maximal at Cz

Occurs during Stages N1 or N2 of sleep

 

Spindles: fast alpha, slow beta

Duration ~0.5 - 1 second

Centrally located

Occurs during Stage N2 of sleep

 

Slow-rolling eye movements: prolonged, slow movements with pen deflection in F7 and F8

What is/are the sleep pattern(s) for this sleep sample?

• POSTS

• V Wave

• Spindles

• K Complex

• Slow rolling eye movements

Answer explanation

POSTS = Positive Occipital Sharp Transients of Sleep

Occurs during Stages N1 or N2 of sleep

 

V-waves: "vertex waves"

Phase reversal maximal at Cz

Occurs during Stages N1 or N2 of sleep

 

Spindles: fast alpha, slow beta

Duration ~0.5 - 1 second

Centrally located

Occurs during Stage N2 of sleep