P200

P200 is a medical term used in the field of medicine. It refers to a specific neurological event that occurs approximately 200 milliseconds after a stimulus. This event is often measured using electroencephalography (EEG), a method of recording electrical activity of the brain.

Overview

The P200 event is a component of the event-related potential (ERP), which is a measured brain response that is the direct result of a specific sensory, cognitive, or motor event. The P200 wave is typically observed at the scalp and is thought to be related to cognitive processing of a stimulus.

Clinical Significance

The P200 wave has been studied in various neurological disorders, including schizophrenia, Alzheimer's disease, and attention deficit hyperactivity disorder (ADHD). Changes in the P200 wave can indicate alterations in cognitive processing, which may be a sign of these and other neurological conditions.

Measurement

The P200 wave is typically measured using electroencephalography (EEG). During an EEG, electrodes are placed on the scalp to measure electrical activity in the brain. The P200 wave is identified as a positive deflection in the EEG signal that occurs approximately 200 milliseconds after a stimulus.

See Also

• Event-related potential
• Electroencephalography
• Neurological disorders
• Cognitive processing

References

P200 Resources
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