The EEG is normal during wakefulness. What do you make of the following discharges during sleep?
The epoch is taken from sleep:
Here is the above page, represented on the anterior-posterior bi...
What you make of the following three consecutive pages of the EEG?
Figure 1.
Figure 2: This follows the previous page.
Figure 3.
Here are a few other pages from the sam...
If you want to start an argument, wading into the territory of triphasic waves is sure to have the desired effect! Some authors suggest that spikes and triphasic waves rarely coexist, but I doubt that...
As a sequel to the case posted on Friday (13y, Friday Frown), have a look at the following waves in sleep.
Figure 1:
In figure 1 above there are spikes at T4-C4 (red vertical lines) and vertex...
Have a look at the following pages: the patient is initially awake and later asleep. Do you see any abnormalities during wakefulness or sleep?
Figure 1. Awake:
Figure 2. Awake, the eyes a...
One doesn't see the following waves very often:
In the above page, the occipital rhythmic delta waves are seen on the left, but in the following examples these are seen bilaterally;
...
Have a look at the following few pages from an EEG of a patient who is asleep. Try to come to a conclusion before reading the comments at the bottom.
.
Page two:
Page 3:
P...
You may or may not have heard of migrating partial seizures of infancy (Epilepsy of infancy with migrating focal seizures). One of the characteristic features of these seizures are runs of alpha frequ...
Have a look at the following page of the EEG and count the number of spikes.
In the days predating digital EEG, the bulk of the routine EEG recording was performed in the above manner. Depen...
This is certainly not a seizure, but the fleeting appearance of alpha frequencies over the parietal regions in a patient who is drowsy.
Contrast this with fleeting alpha rhythms upon eye clos...
Consider the following page of a young adult. Try and identify the nature of the discharges that correspond to the red lines at the bottom of the page. The patient is asleep.
In t...
