EEGs Flashcards
Which condition: Slower Hz (1-3) spike and wave paroxysms
Atypical absence seizures
Which condition: 3-4Hx spike and wave paroxysms / complexes (regular)
Typical absence seizures
Which type of wave is 7-11 Hz, motor activity, occur over motor cortex
Mu waves
Reduced alpha when concentrating on something is referred to as what
Alpha blocking
Which condition: Periodic generalised 1-2Hz sharp waves, present every second. Low and slow background
CJD
Which condition: generalised multiple (poly) spike-wave
Myoclonic epilepsy
Which condition: flattened trace
Huntington’s
Which medication has no effect on awake EEG
Anticonvulsants
Which condition: triphasic waves (1.5-3 seconds)
Hepatic encephalopathy
Which condition: Reduced alpha waves
Alzheimer’s
Which condition: large localised spikes/sharp waves
Partial seizures
Which condition: multispikes followed by spike and slow wave
Tonic-clonic seizures
Does schizophrenia have a characteristic EEG pattern
No
Which condition: immature posterior temporal slow waves
Psychopathy
Which condition: some alpha and generalised increased delta waves
Delirium
Which condition: high amplitude 2-3Hz frontal activity with superimposed epileptiform discharges
Angelman syndrome
Which condition: diffuse giant waves with chaotic background of multifocal spikes and sharp waves (hyppsarrhythmia)
Infantile spasms
Which condition: non-specific increase in slow waves
Neurosyphyllis
Which condition: focal or regional delta activity
Stroke
Which condition: focal slowing
Structural lesions
Which condition: variable focal waves, episodic discharges every 1-3 seconds
Herpes encephalitis
Which condition: generalised diffuse delta and theta waves
Metabolic encephalitis
Which two types of medication cause increase alpha and slow wave (delta, theta), slowing of beta (fast)
Antipsychotics, antidepressants
Which type of medication causes increased beta, decreased alpha, but with OD showing diffuse slowing
Benzodiazepines
