Is the following abnormal? If so, what is its nature?
 There are two observations worth mentioning. Background rhythms (approximately 7.5 Hz frequencies) are well developed in the right central reg...
The following pages are different montages of the same epochs, and the patient is awake and playing on the cell phone.
The waveform is coincident with the ECG, but the distribution of the waveform is...
What would you call this fella? The patient is asleepÂ
 Figure 1:
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Notice the change in "paper speed"; The above represented at 5 seconds per page
Refer to figure 1 above. While this looks li...
Notice that there are slow eye movements at F8 and F7 In the first few seconds, the background rhythms slow after one second and rhythmic theta waves appear alternately over both temporal regions. O...
Long-term monitoring demonstrated no inter-ictal abnormalities during wakefulness and sleep. Similarly, the EEG was normal during ssizures. A confident diagnosis of frontal lobe epilepsy was made, bas...
Seizures consist of pins and needles in the right hand, a "pulling" feeling and videos show piano playing movements with the right hand, which she reports as being involuntary and with retained awaren...
Is the following an example of a seizure, spiking in the parietal region, slow alpha variant, drowsiness or sleep? The first 2 pages represent 20 consecutive seconds. Subsequent epochs are identical t...
What is the nature of this sharply contoured waveform in the middle of the page? The patient is in stage II sleep (No eyeblinks, no EMG, presence of spindles and an electropositive vertex wave approxi...
Above: Awake, normal background rhythms for age (principally theta frequencies over the posterior head regions and beta frequencies that are best developed at CZ), oblique eye movement (first arrow)...
The above page, represented on the referential montage:
The above are frontal alpha frequencies, physiologically normal. Notice the gradual ascent and descent of the waveforms.
The patient is ...
What is the nature of the following sharp and slow waves?
These appear in the parasagittal derivations only. They resemble spike-and-wave. They are either electro-negative anteriorly or electroposi...
65y, two episodes of amnesia lasting 1.5 hours and about three hours, previous traumatic brain injury with amnesia for approximately 24 hoursÂ
F7 is artifactual, but only partially so and the represent...
