Understanding Electroencephalography - University of Arkansas for ...

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The Source of EEG EEG = a measure of cerebral electrical activity The generator sources for EEG waves are within the cerebral cortex Electrical activity recorded on the scalp is produced by extracellular current flow associated with summated excitatory and inhibitory postsynaptic potentials (EPSPs( and IPSPs) Individual action potentials do not contribute directly to EEG activity
Synaptic Potentials: The Basis of EEG Activity Synaptic potentials are of much lower voltage than action potentials, but the produced current has a much larger distribution PSPs have a longer duration and involve a larger amount of membrane surface area than APs
Page 1: B. Sharp, M.D. Gregory of Pediatric
Page 5 and 6: EEG: A Reflection of Current Sponta
Page 7 and 8: Rhythmical vs. Arrhythmical EEG Act
Page 9 and 10: Factors Affecting EEG Waveforms Vol
Page 11 and 12: Origin of EEG Rhythmicity Rhythmica
Page 13 and 14: Posterior Alpha Rhythm Fp1-F3 F3-C3
Page 15 and 16: The Spike and Wave Complex The cell
Page 17 and 18: Neuronal Synchronization The interi
Page 19 and 20: EEG Frequencies Delta Theta Alpha 8
Page 21 and 22: Trace Discontinue in 27 week EGA Ne
Page 23 and 24: 2 month old with Enterococcal menin
Page 25 and 26: 2 month old with Enterococcal menin
Page 27 and 28: EEG During Sleep Stage I sleep Drop
Page 29 and 30: Stage 3-43 4 Sleep Fp1-F3 F3-C3 C3-
Page 31 and 32: Focal Epileptiform Discharges and A
Page 33 and 34: Generalized EEG Abnormalities Gener
Page 35 and 36: Generalized Polyspike Wave Fp1-F3 F
Page 37 and 38: Generalized Delta Slowing Fp1-F3 F3
Page 39 and 40: EEG Monitoring in Critical Care Man
Page 41 and 42: 11 y/o boy with severe cardiomyopat
Page 43 and 44: 11 y/o boy with severe cardiomyopat
Page 45 and 46: Clinical Case 8.5 year old boy with
Page 47 and 48: EEG: Recorded Seizure *Fp1-F3 *F3-C
Page 49 and 50: *Fp1-F3 *F3-C3 *C3-P3 *P3-O1 Fp2-F4
Page 51 and 52: 3D-MRI Image
Page 53 and 54:
Craniotomy with Lesion Localization
Page 55 and 56:
Cortical Grid Map
Page 57 and 58:
Electrocortical Seizure Recording 4
Page 59 and 60:
41-42 42-43 43-44 44-45 45-46 49-50
Page 61 and 62:
Cortical Stimulation: Arm
Page 63 and 64:
Cortical Resection
Page 65:
Depth EEG Recording 33-34 34-35 35-
Page 68:
2 month old with Enterococcal menin
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