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Chapter 1 - Introduction

from Part I - Basics

Published online by Cambridge University Press:  aN Invalid Date NaN

Neville M. Jadeja
Affiliation:
UMass Chan Medical School
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Summary

This chapter introduces the reader to electroencephalography (EEG) including basic concepts, indications, limitations, placement of electrodes, instrument, display, parameters, calibration, safety, and the various types of EEG. EEGs are a commonly used test to evaluate various neurological conditions. Minute electrical potentials generated by neuronal synaptic activity in the superficial cerebral cortex can be detected by recording electrodes placed on the scalp, amplified, and displayed as electrographic waveforms on a screen. Subcortical structures such as the thalamus modulate this activity resulting in rhythms. EEGs can be used in a variety of different settings but like any test, have technical and practical limitations. Electrodes should be placed according to a standardized system, they should have low impedances, and the system should be bio calibrated before and after each recording. Safety and infection prevention protocols should be complied with while performing electroencephalography. [139 words/875 characters]

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Publisher: Cambridge University Press
Print publication year: 2025

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References

Benbadis, SR, Tatum, WO. Overinterpretation of EEGs and misdiagnosis of epilepsy. Journal of Clinical Neurophysiology. 2003 Feb 1;20(1):42–4.10.1097/00004691-200302000-00005CrossRefGoogle ScholarPubMed
La Vaque, TJ. The history of EEG. Hans Berger: psychophysiologist. A historical vignette. Journal of Neurotherapy. 1999 Apr 1;3(2):19.CrossRefGoogle Scholar
Pearl, PL, Holmes, GL. Childhood absence epilepsies. In Pediatric epilepsy: diagnosis and therapy; Pellock, JM, Bourgeois, BFD, Dodson, WE, Eds. (pp. 323–34). Demos Medical Publishing, New York; 2008.Google Scholar
Jasper, H, Kershman, J. Electroencephalographic classification of the epilepsies. Archives of Neurology & Psychiatry. 1941 Jun 1;45(6):903–43.CrossRefGoogle Scholar
Barlow, JS. The early history of EEG data-processing at the Massachusetts Institute of Technology and the Massachusetts General Hospital. International Journal of Psychophysiology. 1997 Jun 1;26(1-3):443–54.CrossRefGoogle ScholarPubMed
Wong, PK. Potential fields, EEG maps, and cortical spike generators. Electroencephalography and Clinical Neurophysiology. 1998 Feb 1;106(2):138–41.10.1016/S0013-4694(97)00116-8CrossRefGoogle ScholarPubMed
Hughes, SW, Crunelli, V. Thalamic mechanisms of EEG alpha rhythms and their pathological implications. The Neuroscientist. 2005 Aug;11(4):357–72.10.1177/1073858405277450CrossRefGoogle ScholarPubMed
Cooper, R, Winter, AL, Crow, HJ, Walter, WG. Comparison of subcortical, cortical and scalp activity using chronically indwelling electrodes in man. Electroencephalography and Clinical Neurophysiology. 1965 Feb 1;18(3):217–28.CrossRefGoogle ScholarPubMed
Jackson, AF, Bolger, DJ. The neurophysiological bases of EEG and EEG measurement: A review for the rest of us. Psychophysiology. 2014 Nov;51(11):1061–71.10.1111/psyp.12283CrossRefGoogle ScholarPubMed
Worrell, GA, Lagerlund, TD, Buchhalter, JR. Role and limitations of routine and ambulatory scalp electroencephalography in diagnosing and managing seizures. Mayo Clinic Proceedings. 2002 Sep 1;77(9):991–8.CrossRefGoogle ScholarPubMed
Cavazzuti, GB, Cappella, L, Nalin, A. Longitudinal study of epileptiform EEG patterns in normal children. Epilepsia. 1980 Feb;21(1):4355.CrossRefGoogle ScholarPubMed
Pohlmann-Eden, B, Hoch, DB, Cochius, JI, Chiappa, KH. Periodic lateralized epileptiform discharges:a critical review. Journal of Clinical Neurophysiology. 1996 Nov 1;13(6):519–30.10.1097/00004691-199611000-00007CrossRefGoogle ScholarPubMed
Salinsky, M, Kanter, R, Dasheiff, RM. Effectiveness of multiple EEGs in supporting the diagnosis of epilepsy: an operational curve. Epilepsia. 1987 Aug;28(4):331–4.10.1111/j.1528-1157.1987.tb03652.xCrossRefGoogle ScholarPubMed
Veldhuizen, R, Binnie, CD, Beintema, DJ. The effect of sleep deprivation on the EEG in epilepsy. Electroencephalography andCclinical Neurophysiology. 1983 May 1;55(5):505–12.Google ScholarPubMed
Fowle, AJ, Binnie, CD. Uses and abuses of the EEG in epilepsy. Epilepsia. 2000 Mar;41:S10–8.10.1111/j.1528-1157.2000.tb01529.xCrossRefGoogle ScholarPubMed
Ferree, TC, Luu, P, Russell, GS, Tucker, DM. Scalp electrode impedance, infection risk, and EEG data quality. Clinical Neurophysiology. 2001 Mar 1;112(3):536–44.10.1016/S1388-2457(00)00533-2CrossRefGoogle ScholarPubMed
Homan, RW, Herman, J, Purdy, P. Cerebral location of international 10-20 system electrode placement. Electroencephalography and Clinical Neurophysiology. 1987 Apr 1;66(4):376–82.CrossRefGoogle ScholarPubMed
Seeck, M, Koessler, L, Bast, T, et al. The standardized EEG electrode array of the IFCN. Clinical Neurophysiology. 2017 Oct 1;128(10):2070–7.10.1016/j.clinph.2017.06.254CrossRefGoogle ScholarPubMed
Acharya, JN, Hani, AJ, Cheek, J, Thirumala, P, Tsuchida, TN. American Clinical Neurophysiology Society guideline 2: guidelines for standard electrode position nomenclature. The Neurodiagnostic Journal. 2016 Oct 1;56(4):245–52.Google ScholarPubMed
Sperling, MR, Engel, J Jr. Sphenoidal electrodes. Journal of Clinical Neurophysiology. 1986 Jan 1;3(1):6773.CrossRefGoogle ScholarPubMed
DeJesus, PV, Masland, WS. The role of nasopharyngeal electrodes in clinical electroencephalography. Neurology. 1970 Sep 1;20(9):869.10.1212/WNL.20.9.869CrossRefGoogle ScholarPubMed
Teplan, M. Fundamentals of EEG measurement. Measurement Science Review. 2002 Jan;2(2):111.Google Scholar
Sinha, SR, Sullivan, LR, Sabau, D, et al. American Clinical Neurophysiology Society guideline 1: minimum technical requirements for performing clinical electroencephalography. The Neurodiagnostic Journal. 2016 Oct 1;56(4):235–44.CrossRefGoogle ScholarPubMed
Drees, C, Makic, MB, Case, K, et al. Skin irritation during video-EEG monitoring. The Neurodiagnostic Journal. 2016 Jul 2;56(3):139–50.CrossRefGoogle ScholarPubMed
Cyngiser, TA. Creutzfeldt–Jakob disease: a disease overview. American Journal of Electroneurodiagnostic Technology. 2008 Sep 1;48(3):199208.CrossRefGoogle ScholarPubMed

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