What is EEG
what is EMG
what does a EEG do?
records electrical activity of the brain
What are the two types of waves
frequency and amplitude
how are electrical activities recorded
what is frequency?
measures how often a wave repeats
what is the range of hertz for frequency?
what is not a range of hertz in frequency
brain wave amplitudes vary from what
what is uV
what is the unit of amplitude?
what is the unit of frequency
What must alway be present in living brains?
The absence of brain activity look like what?
A flat line on a EEG indicates what?
brain death, clinical evidence of death
How many types of waves are grouped according to frequency?
What is the range in Alpha waves?
What is the range in delta waves
less than 4
what is the range in theta waves
what is the range in Beta waves?
What waves are most common in deep sleep?
which wave is the strongest in a resting brain
which wave is present and the strongest when the brain is attentive and alert
which waves are common in children and abnormal in awake adults
delta waves have the _________ frequency waves
How is a alpha wave produced?
subject has closed eyes and are not concentrating