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Sleep-related Epilepsy and Electroencephalography, An Issue of Sleep Medicine Clinics - E-Book

Sleep-related Epilepsy and Electroencephalography, An Issue of Sleep Medicine Clinics - E-Book

Madelieine Grigg-Damberger | Nancy R Foldvary-Schaefer

(2012)

Additional Information

Abstract

This issue on Sleep Electroencephalography (EEG) gives an overview of Electrophysiological readings in sleep with such articles as “The Nuts and Bolts of EEG” and “How the Sleep/Wake EEG Changes Across the Lifespan.” Identifying abnormal EEG activity and patterns in the Electroencephalographic readings is also discussed.  The issue then further focuses in on Seizures and the EEG; specifically, how EEG can be used to diagnosis and identify seizure disorders and differentiate seizures from other paroxysmal nocturnal events, and to diagnose other primary sleep disorders in people with epilepsy.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Sleep-Related Epilepsy and\rElectroencephalography i
Copyright Page ii
Table of Contents vii
Contributors v
Foreword xi
Preface: Sleep-Related Epilepsy and Electroencephalography xiii
Chapter 1. The Nuts and Bolts of Electroencephalography 1
ORIGIN OF THE SCALP EEG 1
AMPLIFICATION AND ELECTRICAL NOISE 1
ELECTRODES 3
GROUND 4
ANALOG VERSUS DIGITAL RECORDING 4
FILTERS 5
LIMITATIONS OF COMPUTER MONITOR SCREEN RESOLUTION 5
SAMPLING RATES 5
DERIVATIONS AND MONTAGES 6
EEG ABNORMALITIES IN PSG RECORDING 7
COMPUTERIZED EEG 9
SUMMARY 11
REFERENCES 11
Chapter 2. Sleep/Wake Electroencephalography Across the Lifespan 13
PATTERNS OF SLEEP ACROSS THE LIFESPAN 13
EEG PATTERNS ACROSS THE LIFESPAN 14
NORMAL EEG VARIANTS DURING SLEEP 21
REFERENCES 22
Chapter 3. Recognizing Normal, Abnormal, and Benign Nonepileptiform Electroencephalographic Activity and Patterns in Polysomnographic Recordings 23
DEVIATIONS FROM NORMAL EEG PATTERNS 23
SLOW ACTIVITY INAPPROPRIATE FOR STATE/AGE 29
NORMAL SLOW ACTIVITY MISTAKEN FOR ABNORMAL ACTIVITY 31
ARTIFACTS THAT CAN RESEMBLE INTERICTAL EPILEPTIC DISCHARGES OR SEIZURES 36
SUMMARY 37
REFERENCES 37
Chapter 4. Identifying Interictal and Ictal Epileptic Activity in Polysomnograms 39
VEEG PSG METHODOLOGY 39
INDICATIONS FOR VEEG PSG 44
INTERPRETATION OF VEEG PSG RECORDINGS 49
SUMMARY 57
REFERENCES 57
Chapter 5. Approach to Seizures, Epilepsies, and Epilepsy Syndromes 59
DIAGNOSTIC APPROACH 59
CLASSIFICATION APPROACH 65
RECONCILING DIAGNOSTIC AND CLASSIFICATION APPROACH 69
SUMMARY 70
REFERENCES 70
Chapter 6. Primary Sleep Disorders in People with Epilepsy: What We Know, Don’t Know, and Need to Know 75
QUESTIONNAIRE-BASED STUDIES OF THE PREVALENCE OF PRIMARY SLEEP DISORDERS IN ADULTS WITH EPILEPSY 75
IS SLEEP ARCHITECTURE ALTERED IN ADULTS WITH EPILEPSY? 77
SLEEP DISORDERS CONFIRMED BY PSG IN ADULTS WITH EPILEPSY 79
QUESTIONNAIRE-BASED STUDIES ON THE PREVALENCE OF SLEEP DISORDERS IN CHILDREN WITH EPILEPSY 80
IS SLEEP ARCHITECTURE ABNORMAL IN CHILDREN WITH EPILEPSY? 81
PREVALENCE OF SLEEP APNEA AND OTHER PRIMARY SLEEP DISORDERS ON SLEEP STUDIES IN CHILDREN WITH EPILEPSY 81
ARE PARASOMNIAS MORE COMMON IN PEOPLE WITH EPILEPSY? 82
DIAGNOSTIC AND TECHNICAL CONSIDERATIONS WHEN PERFORMING SLEEP STUDIES IN PEOPLE WITH EPILEPSY 82
CLINICAL IMPACT OF TREATING SLEEP DISORDERS IN PEOPLE WITH EPILEPSY 84
SUMMARY 85
REFERENCES 85
Chapter 7. Diagnostic Yield of Sleep and Sleep Deprivation on the EEG in Epilepsy 91
EARLY BELIEFS AND RESEARCH ON SLEEP, SLEEP DEPRIVATION, SEIZURES, EPILEPSY, AND THE MOON 92
PATIENTS WITH EPILEPSY OFTEN COMPLAIN OF INSUFFICIENT OR POOR-QUALITY NOCTURNAL SLEEP 93
DIAGNOSTIC YIELD OF SLEEP DEPRIVATIONAS AN ACTIVATION MANEUVER ON EEG 93
YIELD OF SLEEP DEPRIVATION ON THE EEG IN CHILDREN DIFFERS FROM THAT IN ADULTS 94
CONSIDER ORAL MELATONIN TO INDUCE SLEEP IN CHILDREN DURING EEG 94
ISOLATED CONVULSIONS FOLLOWING SLEEP DEPRIVATION 94
SLEEP DEPRIVATION AS A TRIGGER FOR SEIZURES IN PEOPLE WITH EPILEPSY 95
SLEEP DEPRIVATION ENHANCES CORTICAL EXCITABILITY, MORE SO IN PEOPLE WITH EPILEPSY 95
SUMMARY 96
REFERENCES 96
Chapter 8. Seizures, Epilepsy, and Circadian Rhythms 99
CIRCADIAN RHYTHMS IN EPILEPSY 99
THE INFLUENCE OF EPILEPSY AND SEIZURES ON CIRCADIAN RHYTHMICITY 101
SUMMARY AND DISCUSSION 103
REFERENCES 103
Chapter 9. Nocturnal Frontal Epilepsies: Diagnostic and Therapeutic Challenges for Sleep Specialists 105
CLINICAL FEATURES 107
AUTOSOMAL DOMINANT NFLE 107
EEG AND PSG FINDINGS 108
PATHOPHYSIOLOGY 108
DIAGNOSIS PROCEDURES 109
DIFFERENTIAL DIAGNOSIS 109
TREATMENT 110
SUMMARY 110
ACKNOWLEDGMENTS 110
REFERENCES 110
Chapter 10. Differentiating Seizures from Other Paroxysmal Nocturnal Events in Young and Older Adults 113
PAROXYSMAL NOCTURNAL EVENTS: THE DIFFERENTIAL DIAGNOSIS 113
NONEPILEPTIC MOTOR DISORDERS OF SLEEP 115
IMPORTANT FACTORS IN THE HISTORY 117
DIAGNOSTIC TESTING 119
SUMMARY 122
ACKNOWLEDGMENTS 122
REFERENCES 122
Chapter 11. Relationship of Central Pattern Generators with Parasomnias and Sleep-Related Epileptic Seizures 125
OROMOTOR CPG BEHAVIORS 126
EMOTIONAL CPG BEHAVIORS 127
LOCOMOTOR CPG BEHAVIORS 129
PHYSIOPATHOGENIC SPECULATIONS 130
REFERENCES 132
Chapter 12. Benign Rolandic and Occipital Epilepsies of Childhood 135
BENIGN CHILDHOOD EPILEPSY WITH CENTRO-TEMPORAL SPIKES 135
BENIGN OCCIPITAL EPILEPSIES OF CHILDHOOD 138
INFLUENCE OF SLEEP ON INTERICTAL DISCHARGES IN ROLANDIC AND OCCIPITAL EPILEPSIES 141
SUMMARY 141
SUPPLEMENTARY DATA 142
REFERENCES 142
Chapter 13. Electrical Status Epilepticus in Sleep 147
HISTORY AND DEFINITIONS 147
CLINICAL PRESENTATION 148
EEG FINDINGS 149
SPIKE-WAVE INDEX 149
SLEEP ARCHITECTURE 149
LOCALIZATION OF THE EPILEPTIFORM ACTIVITY AND CLINICAL PICTURE 150
TREATMENT STRATEGIES 150
PROGNOSIS 151
PATHOPHYSIOLOGICAL MECHANISMS 153
SUMMARY 154
REFERENCES 154
Chapter 14. Sudden Unexpected Death in Epilepsy: What Does Sleep Have to Do With It? 157
EPIDEMIOLOGY OF DEATH IN PEOPLE WITH EPILEPSY 157
SUDEP MOST OFTEN OCCURS IN BED DURING THE NIGHT 157
CASES OF SUDEP OCCURRING DURING LONG-TERM VIDEO-ELECTROENCEPHALOGRAPHIC MONITORING 158
RISK FACTORS FOR SUDEP 158
POTENTIAL MECHANISMS FOR SUDEP 159
MEASURES TO REDUCE THE RISK OF SUDEP 165
AREAS FOR FUTURE RESEARCH IN SLEEP AND SUDEP 167
REFERENCES 167
Index 171