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Table 2 Criteria for selection of EEG structures

From: Electroencephalographic profiles for differentiation of disorders of consciousness

 

Frequency [Hz]

Duration [s]

Min. amplitude [μV]

Delta waves

0.2 – 4

>0.5

70

Sleep spindles

11 – 15

0.5-2.5

12

K-complexes*

0.05 – 2.5

0.3 - 1.5

100

Theta waves

4 – 8

> 1

15

Alpha waves

8 – 12

> 1.5

5

Beta waves

15 – 25

> 0.5

4

Spikes*

0.2 – 7

0.05 - 0.35

50

  1. Parameters of functions from MP decomposition, used for automatic detection of relevant waveforms. *For K-complexes an additional constraint on the phase, enforcing a negative deflection and condition for the amplitude to exceed also the background amplitude by factor 1.5, for spikes or the amplitude to exceed also the average background amplitude by factor 2.