EEGs

Question 1

Which condition: Slower Hz (1-3) spike and wave paroxysms

Answer 1

Atypical absence seizures

Question 2

Which condition: 3-4Hx spike and wave paroxysms / complexes (regular)

Answer 2

Typical absence seizures

Question 3

Which type of wave is 7-11 Hz, motor activity, occur over motor cortex

Answer 3

Mu waves

Question 4

Reduced alpha when concentrating on something is referred to as what

Answer 4

Alpha blocking

Question 5

Which condition: Periodic generalised 1-2Hz sharp waves, present every second. Low and slow background

Answer 5

CJD

Question 6

Which condition: generalised multiple (poly) spike-wave

Answer 6

Myoclonic epilepsy

Question 7

Which condition: flattened trace

Answer 7

Huntington’s

Question 8

Which medication has no effect on awake EEG

Answer 8

Anticonvulsants

Question 9

Which condition: triphasic waves (1.5-3 seconds)

Answer 9

Hepatic encephalopathy

Question 10

Which condition: Reduced alpha waves

Answer 10

Alzheimer’s

Question 11

Which condition: large localised spikes/sharp waves

Answer 11

Partial seizures

Question 12

Which condition: multispikes followed by spike and slow wave

Answer 12

Tonic-clonic seizures

Question 13

Does schizophrenia have a characteristic EEG pattern

Answer 13

No

Question 14

Which condition: immature posterior temporal slow waves

Answer 14

Psychopathy

Question 15

Which condition: some alpha and generalised increased delta waves

Answer 15

Delirium

Question 16

Which condition: high amplitude 2-3Hz frontal activity with superimposed epileptiform discharges

Answer 16

Angelman syndrome

Question 17

Which condition: diffuse giant waves with chaotic background of multifocal spikes and sharp waves (hyppsarrhythmia)

Answer 17

Infantile spasms

Question 18

Which condition: non-specific increase in slow waves

Answer 18

Neurosyphyllis

Question 19

Which condition: focal or regional delta activity

Answer 19

Stroke

Question 20

Which condition: focal slowing

Answer 20

Structural lesions

Question 21

Which condition: variable focal waves, episodic discharges every 1-3 seconds

Answer 21

Herpes encephalitis

Question 22

Which condition: generalised diffuse delta and theta waves

Answer 22

Metabolic encephalitis

Question 23

Which two types of medication cause increase alpha and slow wave (delta, theta), slowing of beta (fast)

Answer 23

Antipsychotics, antidepressants

Question 24

Which type of medication causes increased beta, decreased alpha, but with OD showing diffuse slowing

Answer 24

Benzodiazepines

Question 25

Which medication causes slowing of alpha and paroxysmal activity

Answer 25

Lithium

Question 26

Which drug causes decreased alpha, increased theta and delta, OD slow wave predominant

Answer 26

Opioids

Question 27

Which drug causes decreased alpha, increased beta

Answer 27

Barbiturates

Question 28

Which drug causes increased alpha and theta acutely, and increased beta in withdrawal

Answer 28

Alcohol

Question 29

Which condition shows lots of beta (fast) or can be normal

Answer 29

Delirium tremens

Question 30

Which drugs cause increased alpha frontally

Answer 30

Cannabis and cocaine

Question 31

Which wave is seen frontally in adults and posteriorly in children

Answer 31

Delta

Question 32

Which is delta wave predominantly seen

Answer 32

Slow wave sleep (stages 3 and 4) - awake suggests pathology

Question 33

When is theta wave predominantly seen

Answer 33

Young children, drowsy and sleeping adults

Question 34

Which wave is seen posteriorly when eyes are closed and relaxed

Answer 34

Alpha

Question 35

What are frontal/central 12-14Hz sigma waves also known as

Answer 35

Sleep spindles (stage 2 sleep)

Question 36

Which wave is seen frontally when busy or concentrating

Answer 36

Beta

Question 37

Which stage of sleep: low voltage, mixed frequency (theta and slow alpha), saw tooth, 25% of sleep

Answer 37

REM

Question 38

When do sleep terrors occur

Answer 38

Non-REM stage 3

Question 39

When do nightmares occur

Answer 39

Non-REM stage 4