P200
P200
P200 (/piː tʊˈhʌndrəd/), also known as P200 latency, is a term used in neuroscience and psychology to describe a particular brainwave pattern.
Etymology
The term "P200" is derived from the fact that this brainwave pattern typically occurs approximately 200 milliseconds after a stimulus is presented. The "P" stands for "positive", referring to the positive-going deflection of the electroencephalogram (EEG) waveform.
Definition
P200 is an Event-related potential (ERP) component elicited in the process of decision making. It is most commonly observed in the parietal cortex, an area of the brain involved in processing sensory information and interpreting visual information.
Related Terms
- Event-related potential: ERPs are brain responses that are directly related to specific sensory, cognitive, or motor events.
- Electroencephalogram: An EEG is a test that detects electrical activity in your brain using small, metal discs (electrodes) attached to your scalp.
- Parietal cortex: The parietal cortex plays important roles in integrating sensory information from various parts of the body, understanding spatial orientation, and recognizing objects and faces.
See Also
- P300 (neuroscience): Another ERP component that occurs later than the P200.
- N200: An ERP component that is typically observed as a negative deflection in voltage with a latency of 200-300 ms.
External links
- Medical encyclopedia article on P200
- Wikipedia's article - P200
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