Page 51 - EEG of Newborn and Infants
P. 51

EEG of Infancy (2-12 Months)

Continuity                              Continuous
Interhemispheric synchrony
Differentiation of waking and sleeping  No significant asynchrony
Posterior basic alpha rhythm
Slow activity (awake)                   Good
Temporal theta burst
Occipital theta                         Starting at 3-4 mos (4/sec) reaching about 6/sec at 12 mos
Fast activity (awake)
Low voltage                             Considerable
Tracé alternant
Spindles                                None
Vertex waves and K complexes
Positive occipital sharp transients     None
Slow and fast activity in sleep
REM sleep                               Very moderate

                                        Uncommon, usually abnormal

                                        Disappears in 1st (seldom 2nd) mo

                                        Appear after 2nd mo (12-15/sec, sharp, shifting)

                                        Appear mainly at 5 mos, fairly large, blunt

                                        None

                                        Much diffuse 0.75-3/sec activity with posterior maximum

                                        REM portion decreasing

                                                                   Niedermeyer E Electroencephalography 1999
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