Teratogenicity; updated North American Registry Jul 28, 2025

As healthcare practitioners who primarily see problems in the human brain, it is incumbent on us to ensure that foetuses' brains are protected as best as humanly possible, especially from iatrogenic h...

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Electrode artifact or Spike? Jul 26, 2025

A paediatrician telephoned me about a nine-year-old who had a generalized tonic-clonic seizure in sleep, wanting to know whether an MRI and EEG should be requested. The child is intellectually and dev...

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The common average montage; Left temporal sharp and slow wave? Jul 24, 2025

Herewith another example:

 

The above looks a little like a sharp and slow wave at F7-M1-F3-FP1.

 

Then look at it on the standard AP bipolar montage; see below.

 

It looks far less conspicu...

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First seizure, 70+ Jul 22, 2025

The patient had an episode of amnesia yesterday. He recalls seeing flashes of multi-coloured "circles and squiggles on the left" and then recalls telephoning his wife, who was not at home. He has no r...

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A colleague's question Jul 21, 2025

Re this post, Frontal lobe seizures versus functional seizures? Teenager
A colleague asks, "could this be phantom spike-and-wave?"

 

The short answer is no. Why? Phantom spike-and-wave (also known as...

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Right frontal versus temporal sharp and slow wave? Jul 20, 2025

When reading on the common average montages, I am often reminded of the quote by WS Gilbert, "Things are seldom what the seem".

 

Take a look at the following page.

 

 

The discharge correspond...

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Low amplitude spike and wave don't mean it ain't an IED Jul 19, 2025

Part of the vaccine against the (false positive) spike protein on the EEG is the use of amplitude as a criterion. However, no criterion is absolute, but in disregarding it you need to be very, very, v...

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Arousal, resembles a seizure Jul 18, 2025

The asymmetry of the following rhythms during transient arousal resembles a seizure at T4-T6. The following are three consecutive pages.

 

 

 

 

In contradistinction to a seizure, the above...

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Frontal lobe seizures versus functional seizures? Teenager Jul 17, 2025

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...

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Six years old, encephalopathy? Jul 17, 2025

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...

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Triphasic waves vs spikes Jul 16, 2025

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...

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Who should interpret routine EEGs? Jul 14, 2025

This is from a survey performed in the USA:

Journal of Clinical Neurophysiology

 

 

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