Representative polysomnographic recordings from adults in the awake state and various stages of sleep. Recordings are made at conventional sleep laboratory.

Slides:

Advertisements

Similar presentations

Clinical Applications of Spectral Analysis Winni Hofman, PhD University of Amsterdam Medcare Amsterdam.

Advertisements

Copyright Compumedics Limited

Classification of Sleep EEG Václav Gerla cvut

Assessment of Sleep and Breathing Chapter 18. Sleep Medicine Significant advances during the past several years – Heightened appreciation of sleep disorders.

Sleep Sleep is a naturally recurring state characterized by altered consciousness, relatively inhibited sensory activity, and inhibition of nearly all.

Abnormal EEG brain in neurological disease

Abstract  Fibromyalgia (FMS) is a chronic syndrome of widespread pain and fatigue;  Here, it is hypothesized, that this disorder is explained by the.

For Neurology Residents

Electroencephalography

Non-Epileptiform Patterns

Jameel Adnan, MD. Community & Primary Health Care KAAU-RABEG BRANCH

นพ.รังสรรค์ ชัยเสวิกุล

ELECTROENCEPHALOGRAPHY (EEG)

Adult Sleep Stage Scoring Rules

Sleep and Dreaming Methodology PAGE 48. EEG  electroencephalogram.

Stage II sleep. On this transverse montage, there is a K-complex in the fifth second, with its typical broad duration (>500 ms), diphasic morphology, and.

Sleep-Stage Scoring BY AHMAD YOUNES PROFESSOR OF THORACIC MEDICINE Mansoura Faculty Of Medicine.

Chapter 4 States of consciousness BY: DR. UCHE AMAEFUNA (MD)

Lecture – 14 Dr. Zahoor Ali Shaikh 1. What is Sleep ?  Sleep is a state when person is not aware of surrounding. Sleep is active process. It consist.

Interpretation of Polysomnography

What’s In A Brain? Wake me up before you go go… Clinically Speaking “Hey, I know you” Much Too Young Artifactural Digest

Polysomnography & Sleep Scoring

Quick EEG facts Physicians use the EEG to aid in the diagnosis of : epilepsy, cerebral tumors, encephalitis, and stroke EEG usage was first documented.

Copyright © 2009 Allyn & Bacon How Much Do You Need to Sleep? Chapter 14 Sleep and Dreaming.

Sleep and Dreams. I. Facts about Sleep  One-Third of our adult lives are spent in sleep  Experts recommend 8 hours of sleep a night –A typical adult.

Children’s sleep What is sleep? How much do children need? Dr Andrew Mayers

Intro to EEG Nicholas J. Beimer, MD. Lead placement system.

Unit 3 - Part I.2 Consciousness & Sleep

Date of download: 6/28/2016 Copyright © American College of Chest Physicians. All rights reserved. From: Upper Esophageal Sphincter and Gastroesophageal.

Electroencephalogram. Terms EEG- Elecrtoencephalogram Electroencephalograph ECoG- Electrocorticogram.

Stages of Sleep The Sleep Cycle. How to Measure Sleep Measuring Sleep -- Scientists measure sleep with the following: Electroencephalogram (EEG) -- a.

Benign infantile seizures are characterized by (1) familial or nonfamilial occurrence; (2) normal development prior to onset; (3) onset mostly during the.

ELECTROENCEPHALOGRAPHY (EEG)

Prof. Dr. Elham Aljammas 10\ Dec. \ 2013.

The EEG features and their evolution change with age

Progressive supranuclear palsy

Fourier power spectra of normal MR tremor (mechanical), enhanced physiological tremor due to thyrotoxicosis (enhanced) and physiological tremor with a.

Transient Unilateral Attenuation of Background Activity During Sleep

A. “10-20” is a measurement system designed to reliably reproduce electrode positions on different patients, regardless of head size. Electrodes are placed.

Corrosion preparations with plastics demonstrating penetrating branches of the anterior and middle cerebral arteries. The medial and lateral lenticulostriate.

The median nerve is stimulated percutaneously (1) at the wrist and (2) in the antecubital fossa with the resultant compound muscle action potential recorded.

AZRA NAHEED MEDICAL COLLEGE

A mild and inconsistent asymmetry of photic driving response is frequently seen in normal individuals. An asymmetry in photic driving response may result.

Generalized, frontally predominant, rhythmic fast activity is the most common ictal EEG accompaniment of generalized tonic seizures. Ictal EEG patterns.

Multichannel polysomnographic recording

In this patient, the ground electrode was placed on the forehead and the low-impedance active electrode occurred in the occipital region. Therefore, the.

Cervical disc herniation as visualized with T2-weighted MRI. A

MAS develop atonia immediately after a single or a series of 2–3 myoclonic seizures (MS). A sudden loss of tone causes either a drop attack or slight myatonia,

(1) Costovertebral angle. (2) Spinous process and interspinous ligament. (3) Region of articular facet (fifth lumbar to first sacral). (4) Dorsum of sacrum.

Volume 12, Issue 10, Pages (December 2011)

After the seizure has been viewed using conventional frequencies and muscle activity has been removed, a search for baseline shifts should be performed.

In this patient, the ground electrode was placed on the forehead and the low-impedance active electrode occurred in the occipital region. Therefore, the.

Photic driving responses in children <6 years are relatively small

MRI showing a right frontal brain abscesses associated with bacterial endocarditis (S. aureus) in a 55-year-old man. There is characteristic rim enhancement.

Usually, scalp-recorded ictal DC shifts are not successfully recorded because movements during clinical seizures could cause artifacts. They are highly.

Secondarily generalized discharges are a common occurrence with frontal lobe epilepsy. The EEG findings that suggest secondary bilateral synchrony include.

The presence of PDA and depression of beta and alpha activities is supportive of underlying structural abnormalities (both gray and white matter) in the.

Intro to EEG Nicholas J. Beimer, MD.

Understanding our Dreams through our Sleep

In the study of 120 patients with defective alpha activity by mental arithmetic at Mayo Clinic, 32 patients had Bancaud phenomenon. Associated focal slowing.

Sleep, Sleep disorders, Biological rhythms

Sleep and Wakefulness (and Circadian Rhythms)

Ultradian Rhythm STAGES OF SLEEP: Link to Spec 4.2.2

Karen Redhead & Sarah Barclay

Volume 130, Issue 1, Pages (January 2006)

Sleep stages Awake Stage 1 Stage 2 Stage 3 Stage 4

Systems neuroscience: The slowly sleeping slab and slice

Sleep and Arousal Prof. K. Sivapalan.

Sleep and Arousal Prof. K. Sivapalan.

Presentation transcript:

Representative polysomnographic recordings from adults in the awake state and various stages of sleep. Recordings are made at conventional sleep laboratory speed of 10 mm/s (i.e., at the paper speed of one-third standard clinical EEG recordings). A. Upper tracings: Awake state (with eyes closed). Alpha rhythms are prominent in EEG. Normally active chin EMG. B. Middle tracings: Stage 1 (N1) sleep. Onset of sleep is defined by the diminished amplitude of alpha waves in the occipital EEG channel ("flat" appearance). C. Lower tracings: Stage 2 (N2) sleep, characterized by appearance of high-amplitude single-complex (K) waves and bursts of 13- to 16-Hz waves (sleep spindles) on a background of low frequency. D. Upper tracings: Stage 3 (N3) sleep. Appearance of high-voltage slow (delta) waves. E. Middle tracings: Deepest stage of N3 sleep, with predominant delta-wave activity occupying 50 percent of a 30-s tracing. F. Lower tracings: Rapid eye movement (REM) sleep, characterized by episodes of REM and occasional muscle twitches in an otherwise flat chin EMG. Technical Note: Four sites from the same montage are illustrated in each recording: C3/A2, left central to right mastoid; O2/A1, right occipital to left mastoid; ROC/A1, right outer canthus to left mastoid; LOC/A2, left outer canthus to right mastoid. A chin EMG tracing is added to each recording. (Adapted with permission from Butkov N. Atlas of Clinical Polysomnography. Vol 1. Synapse Media, Medford, OR, 1996.) Source: Chapter 19. Sleep and Its Abnormalities, Adams and Victor's Principles of Neurology, 10e Citation: Ropper AH, Samuels MA, Klein JP. Adams and Victor's Principles of Neurology, 10e; 2014 Available at: http://neurology.mhmedical.com/DownloadImage.aspx?image=/data/books/ropp10/ropp10_c019f002a-c.png&sec=49254801&BookID=690&ChapterSecID=49251507&imagename= Accessed: January 03, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved