Figure 1
From: The inv dup (15) or idic (15) syndrome (Tetrasomy 15q)
Inv dup(15) or idic(15) patient at age 12 ys7 m. Slow wave sleep. EEG showing diffuse spikes, polispikes, ill-defined polispike/wave complexes, somewhat predominant over the right hemisphere. Amplitude 100 μ V/cm; speed 1 sec/1.5 cm.