elektroencefalografirecordere

Elektroencefalografirecordere is a medical device that records the brain's electrical activity by means of electroencephalography (EEG) sensors placed on the scalp. It is used in clinical and research settings to assess brain function over time.

A typical system includes electrodes, an amplifier with high input impedance, filters, an analog-to-digital converter, and data storage or real-time display. Modern recorders can be stationary in hospitals or portable/ambulatory, with wired or wireless connections, and may provide synchronized video or event markers for correlation with behavior.

Recordings range from brief interictal EEGs to long-term monitoring lasting 24 hours or several days. The 10-20 international system is commonly used to position electrodes. EEG recordings support diagnosis and management of epilepsy, sleep disorders, coma prognosis, and various encephalopathies.

The captured signals are in microvolts and require artifact management (eye movements, muscle activity). Clinicians analyze waveforms, rhythms, and abnormal patterns such as spikes. Data are compiled into reports and may be exported for research or integrated with other modalities (e.g., video).

Safety and quality are ensured through skin preparation, conductive gel, impedance checks, and adherence to medical device standards. Proper electrode application and monitoring minimize discomfort and risk.

History: The field began with Hans Berger, who recorded the first EEG in 1924; since then EEG recorders evolved from paper-based, single-channel devices to contemporary multi-channel, digital systems.