الفهرس 
StrokeOnly 14 pages are availabe for public view
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Abstract
We could measure the electrical activity of the human brain by placing electrodes on the scalp and amplifying its signals, and Brain activity related to motor action can be studied by shifts of EEG rhythms or by event related potentials (ERPs) which can even precede voluntary movement.
Our study aimed to identify the pattern of brain plasticity and the side of recovery following stroke in patient who recovered motor upper limb function using motor related cortical potentials.
EEG was performed to extract LRPs in response to self-cued button presses. LRP amplitude was calculated and averaged and hemisphere of recovery determined according to polarity of LRP.
A total of 33 patients were recruited, analysis was done for 29 after excluding 4 records due to artifacts 15 acute cases with onset two weeks after stroke and 14 chronic cases with onset after 3 months after stroke. Male patients represented 69.7%, with a mean age for all patients of 52.19 years 15 acute and 14 chronic patients.
All patients were assessed clinically using fugel meyer.
The current study found increase in the negativity in the action potential over the contra lesional hemi sphere in the acute cases eleven cases from 15 with percent (62%) showed contralesional recovery.
The result of the current study resulted twelve of 14 with percent (85%) patients had evidence of contralesional recovery in large territorial infarction versus 56% ipsilesional recovery in small lacunar infarction with statistical significant P-value 0.017.
Left-sided infarcts were twice more liable to recover from contralesional hemisphere (66.7%) than ipsilesional one (33.3%)