EEG after sleep deprivation

• The examination for children under 12 years of age is performed after partial sleep deprivation:
  – Children 2-5 years of : the child should be put to bed at their standard usual time. At 4:00 a.m., the child should be woken up and kept awake until the EEG examination (the child cannot sleep from 4:00 a.m. onwards).
  – Children 5-8 years (the child has been sleeping for 6 hours): the child should be put to bed the previous day at 10:00 p.m. At 4:00 a.m., the child should be woken up and kept awake until the EEG examination (the child cannot sleep from 4:00 a.m. onwards).
  – Children 8-12 years of (the child has been sleeping for 4 hours): the child should be put to bed the previous day at midnight. At 4:00 a.m., the child should be woken up and kept awake until the EEG examination (the child cannot sleep from 4:00 a.m. onwards).
• The examination for children over 12 years of age and for adults is performed after complete sleep deprivation - you must not sleep on the day before the examination and throughout the night before the examination until the examination is performed.
• On the morning of the examination, you should first eat breakfast, then wash your hair/hair – after washing your hair, you cannot use any cosmetics (e.g. hairspray, gel, mousse, conditioner, etc.).
• It is not advisable to consume beverages containing large amounts of caffeine, high-energy drinks or alcohol before the examination.
• Do not discontinue your current medication. Bring a list of your current medications and supplements (especially vitamin D) to your examination.
• Driving is not permitted on the day of the examination, it is advisable to come with an accompanying person.
• The patient should reserve approximately one hour for the examination (preparation for the examination in the office and the performance of the examination).

 EEG is a non-invasive method of examining changes in brain potentials using a device called an electroencephalograph. Electrodes are placed on the patient's scalp and connected to a bioelectric amplifier (head). The resulting bioelectric signal is recorded in the form of various brain waves, which are then analyzed. The aim of the test is to record and interpret the brain's bioelectric activity.

The test utilizes so-called activation methods , including photostimulation, hyperventilation, and the hold response. Activation methods are used to obtain additional diagnostic information.
Photostimulation (FS) involves exposing the subject to a variable, rhythmic stroboscopic stimulus from a distance of approximately 20-30 cm from the eyes. Hyperventilation (Hv) involves taking deep breaths for three minutes, while the hold response (OZ) involves opening and then closing the eyes for several seconds.

 This examination facilitates the differentiation between functional and organic brain disorders. In many brain conditions, the examination allows for localization of the disease process to a specific area. This examination is particularly important in patients with epileptic seizures, encephalitis, cranial trauma, and in the differentiation of comas. This examination is an auxiliary method in the assessment of patients with brain tumors and vascular brain damage (following cerebral stroke). A head EEG allows for the diagnosis of various neurological or psychiatric complaints.

Typically, the examination is performed in a supine position (if indicated, the examination can be performed in a sitting position).
The examination is painless and non-invasive.

• epilepsy (diagnosis, monitoring of treatment, making decisions about discontinuing medication),
• loss of consciousness, fainting,
• disturbances of consciousness,
• headaches, migraine,
• skull injuries,
• brain tumors,
• cerebrovascular diseases and their consequences,
• meningitis and encephalitis,
• disturbances of consciousness,
• states of confusion,
• differentiation of functional and organic brain diseases,
• sleep disorders (difficulty falling asleep, waking up at night, nightmares, sleep apnea),
• disorders of psychomotor development in children,
• emotional disorders,
• attention deficit disorder,
• disorders of cognitive functions and learning processes (school difficulties),
• anxiety states,
• attention deficit hyperactivity disorder (ADHD),
• delayed psychomotor development,
• in serial EEG examinations it facilitates the dynamic assessment of disease symptoms.

• stitches on the head (the examination can be performed one week after the stitches are removed).