EEGkäyrää

EEGkäyrää is a Finnish term that translates to "EEG curve" or "EEG waveform." It refers to the graphical representation of the electrical activity of the brain as measured by an electroencephalogram (EEG). An EEG machine records these electrical signals from the scalp using electrodes, and the resulting data is displayed as a series of wavy lines, each representing activity from a specific area of the brain.

These curves exhibit various patterns that are interpreted by neurologists and other medical professionals to diagnose and monitor neurological conditions. Different types of brainwaves are characterized by their frequency and amplitude. For instance, alpha waves are typically seen when a person is awake and relaxed with their eyes closed, while beta waves are associated with active thinking and alertness. Delta waves are prominent during deep sleep, and theta waves are often observed during drowsiness or light sleep.

Abnormal EEGkäyrää can indicate a range of issues, including epilepsy, sleep disorders, brain tumors, stroke, and other brain injuries or dysfunctions. The patterns within the EEGkäyrää are analyzed for their presence, absence, frequency, amplitude, and spatial distribution to gain insights into the brain's functioning. This non-invasive diagnostic tool plays a crucial role in understanding brain health and disease.