What is presurgical evaluation of epilepsy?
An overview of the following six cortical zones that have been defined in the presurgical evaluation of candidates for epilepsy surgery is given: the symptomatogenic zone; the irritative zone; the seizure onset zone; the epileptogenic lesion; the epileptogenic zone; and the eloquent cortex.
What assessments are needed for epilepsy?
Your doctor may also suggest tests to detect brain abnormalities, such as:
- Electroencephalogram (EEG).
- High-density EEG .
- Computerized tomography (CT) scan.
- Magnetic resonance imaging (MRI).
- Functional MRI (f MRI ).
- Positron emission tomography (PET).
- Single-photon emission computerized tomography (SPECT).
What is Epileptogenic focus?
a discrete area of the brain in which originate the electrical discharges that give rise to seizure activity.
What is an Epileptogenic?
Epileptogenesis is defined as the process during which changes occur in the brain after a precipitating injury or insult that results in the development of spontaneous recurrent seizure activity or epilepsy.
What is the initial assessment of a patient who may have experienced a seizure?
In the United States, most patients are initially evaluated in an emergency department and almost invariably undergo a CT head. MRI should be performed to identify the presence of an epileptogenic structural abnormality in patients with single unprovoked seizures.
What are the 2 main types of epilepsy?
There are two major classes or groups of seizures: focal onset and generalized onset.
What does Epileptogenicity mean?
This approach is based on an ‘Epileptogenicity Index’ (EI) that combines both spectral and temporal parameters, respectively related to the propensity of a brain area to generate rapid discharges and to the time for this area to become involved into the seizure process.
What does Dialeptic mean?
Definition. A dialeptic seizure is a type of seizure characterised predominantly by reduced responsiveness or awareness and with subsequent at least partial amnesia of the event. [ from HPO]
What is ictal semiology?
Ictal verbalization is defined as the presence of clearly intelligible speech when the patient already shows unresponsiveness and/or has clear distal automatisms. It tends to lateralize the epilepsy to the non-dominant hemisphere in patients with temporal lobe epilepsy.
What is Type 4 epilepsy?
Autosomal dominant nocturnal frontal lobe epilepsy (ADNFLE) is characterized by clusters of nocturnal motor seizures, which are often stereotyped and brief (5 seconds to 5 minutes). They vary from simple arousals from sleep to dramatic, often bizarre hyperkinetic events with tonic or dystonic features.