PMC6241237_01
The initial EEG showed pseudoperiodic lateralized epileptiform discharges over the right hemisphere with a frequency of 2-3 Hz. Calibration: 1 s between vertical lines and 100 microV per vertical unit. Low filter: 1 Hz; high filter: 35 Hz; notch filter: 50 Hz.
CRINM2018-3092018.001.jpg
PMC6241237_01_CRINM2018-3092018.001.jpg
fig1
The EEG showed pseudoperiodic lateralized epileptiform discharges (PLEDs) over the right hemisphere at a frequency of 2-3 Hz (Figure 1), which were time-locked with the clinical motor signs (video sequence 1).
The second EEG performed 25 days after the initial EEG showed severe slowing of background activity and periodic sharp-wave complexes with triphasic morphology at a rate of 0.5 Hz. Calibration: 1 s between vertical lines and 100 microV per vertical unit. Low filter: 1 Hz; high filter: 35 Hz; notch filter: 50 Hz.
CRINM2018-3092018.002.jpg
PMC6241237_01_CRINM2018-3092018.002.jpg
fig2
The patient had an intracerebral haemorrhage in the right hemisphere as a complication of the brain biopsy, and the haematoma was surgically removed.  Figure 2 shows EEG results performed 25 days after the first EEG.