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The EEG has been used for many purposes besides the conventional uses of clinical diagnosis and conventional cognitive neuroscience. An early use was during World War II by the U.S. Army Air Corps to screen out pilots in danger of having seizures; [116] long-term EEG recordings in epilepsy patients are still used today for seizure prediction.
Epilepsy can often be confirmed with an EEG, but a normal reading does not rule out the condition. [4] Epilepsy that occurs as a result of other issues may be preventable. [1] Seizures are controllable with medication in about 69% of cases; [7] inexpensive anti-seizure medications are often available. [1]
A spike-and-wave discharge is a regular, symmetrical, generalized EEG pattern seen particularly during absence epilepsy, also known as ‘petit mal’ epilepsy. [1] The basic mechanisms underlying these patterns are complex and involve part of the cerebral cortex , the thalamocortical network , and intrinsic neuronal mechanisms.
For most people with epilepsy, the interictal state corresponds to more than 99% of their life. The interictal period is often used by neurologists when diagnosing epilepsy since an EEG trace will often show small interictal spiking and other abnormalities known by neurologists as subclinical seizures. Interictal EEG discharges are those ...
A paper published in 2023 showed that burst suppression and epilepsy may share the same ephaptic coupling mechanism. [6] When inhibitory control is sufficiently low, as in the case of certain general anesthetics such as sevoflurane (due to a decrease in the firing of interneurons [7]), electric fields are able to recruit neighboring cells to fire synchronously, in a burst suppression pattern.
An EEG can aid in locating the focus of the epileptic seizure. Blood tests can determine if there are any reversible causes of the seizure (provoked seizures). [3] [44] This includes a complete blood count that may show infection.
Reading epilepsy is a type of a reflex seizure caused by reading. The reading epilepsy is one of a number of reflex seizures. The reflex seizures are characterized by epileptic seizures occurring due to reflex, i.e. caused by a specific stimulus, contrary to other epilepsy types with spontaneous seizures. In discussed case reading becomes a ...
Generalized epilepsy is a form of epilepsy characterised by generalised seizures with no apparent cause. [1] Generalized seizures, as opposed to focal seizures, are a type of seizure that impairs consciousness and distorts the electrical activity of the whole or a larger portion of the brain (which can be seen, for example, on electroencephalography, EEG).