Handbook of EEG interpretation - part 10 pdf

... 97, 98 105 absence, 99 101 generalized tonic-clonic (GTC), 103 infantile spasms, 104 myoclonic, 102 polyspike-and-wave in, 98 recruiting rhythm in, 103 spike wave in, 98 tonic seizure, 105 Generalized ... transients of sleep (BETS), 46 Benign variants of uncertain significance, 42–49 1 4- and 6-Hz positive bursts as, 45 6-Hz spike-and-wave burst as, 44 benign epileptiform...

Ngày tải lên: 09/08/2014, 20:22

... theta rhythm in an 18-year-old patient while awake. T heta rhythms are composed of 4- to 7-Hz frequencies of varying amplitude and morphologies. Approximately one-third of nor- mal awake, young ... distribution, waveform fre- quency, polarity, and morphology.The state of wakefulness and age are critical fea- tures for accurate interpretation of the normal EEG. FIGURE 1.22. No...

Ngày tải lên: 09/08/2014, 20:22

... [11]): 20 g of potassium ferricyanide is dis- solved in 500 mL of 1/15 M phosphate bu er solution (pH 7.1), followed by the addition of 50 mg potassium cyanide and 100 mL of 1% Triton X -1 00 (obtainable ... liberation of CO can occur [10] ; at –30° C, slight production of Met-Hb is obtained, but no changes in values of COHb and the total Hb for at least 60 days. At –80° C,...

Ngày tải lên: 26/01/2014, 18:20

... the level of the object of conceptualization, which is indicated by the use of bold lines: they ‘‘profile’’ aspects of the object of conceptualization, but none at the level of the subjects of conceptualization ... relevant for the speech participants (i.e., part of the common ground), then the location of the address is calculated from the position of sentence (4) in thi...

Ngày tải lên: 03/07/2014, 01:20

... absolute electrographic sites of maximal nega- tivity (or positivity) by phase reversals (Figure 1.3A). Normal EEG 7 Fp1-F7 F7-T3 T3-T5 T5-O1 Fp1-Ref F7-Ref T3-Ref T5-Ref O1-Ref AB FIGURE 1.7. Eye ... bibliographical references and index. ISBN-13: 97 8-1 -9 3386 4-1 1-2 (pbk. : alk. paper) ISBN -1 0: 1-9 3386 4-1 1-7 (pbk. : alk. paper) 1. Electroencephalography—Handbooks, m...

Ngày tải lên: 09/08/2014, 20:22

... 1. 5- to 3.0-Hz delta in a 66-year-old man with encephalopathy that was unresponsive. The above example of EEG is rep- resentative of the entire record. No reactivity was noted during the EEG. C ontinuous ... diffuse slowing of the background rhythm. In general, the state of the patient is the best indicator of abnormality with some low-voltage EEGs of < ;10 to 20 µV fou...

Ngày tải lên: 09/08/2014, 20:22

... burst of generalized 3.5-Hz spike-and-slow waves in JME. S pike-and-slow-wave complexes that have a repetition rate of >3 Hz are referred to as fast GSW. JME is the most common idio- pathic ... (petit mal) seizure in an 8-year-old boy. D uring an absence seizure, the EEG demonstrates generalized, reg- ular, synchronous 3-Hz spike-and-wave discharges in the setting of waking or dro...

Ngày tải lên: 09/08/2014, 20:22

... drowsiness and light non-REM sleep. A frequent ictal pat- tern of mesial temporal origin is the sudden appearance of localized or regional background attenuation, build-up of 4- to 7-Hz rhythmic activity, ... features. FIGURE 4 .10. The above EEG shows a simple partial seizure that occurred out of stage 2 sleep. S imple partial seizures are partial seizures that do not involve im...

Ngày tải lên: 09/08/2014, 20:22

... stages III and IV are expressed together as slow-wave (or delta) sleep. FIGURE 6 .10. This is a 1 0- sec epoch of stage II; it is the last 10 sec of the previous sample. T his sample is displayed ... it is often use- ful to change the paper speed from 10 mm/sec to 30 mm/sec for bet- ter identification of sleep spindles. CHAPTER 6 160 FIGURE 5.13. BiPLEDs in a 37-year-old HIV-pos...

Ngày tải lên: 09/08/2014, 20:22

... arrow). S tage REM is characterized by the appearance of low-amplitude, mixed-frequency EEG activity, EMG atonia, and rapid eye move- ments. EEG activity is similar to that seen in stage I sleep; ... a 30-sec epoch showing the start of stage REM and saw tooth waves. S aw tooth waves (arrows) are 2- to 5-Hz vertex negative sharp waves that often occur in a series. They can be precu...

Ngày tải lên: 09/08/2014, 20:22