Event Related Potentials

Event Related Potentials (ERPs) are used in studies to evaluate the brain’s processing speed. Like with a CPU, faster clock speed means more power. These mathematical measurements provide results of the brain’s timing in response to a defined test (specifically audio and visual stimulus and response). ERPs are measured using electroencephalography (EEG), which involves recording electrical activity from the scalp. When your brain processes an event (like a sound, a light, or a thought), it produces electrical signals. Those signals, when associated with the event, are known as ERPs. They represent the changes in brain activity in response to the specific event. ERPs are typically time-locked to the event, meaning they occur at approximately the same time relative to the event each time it happens.

ERPs are a record of the brain’s neural response to new stimuli on a millisecond by millisecond basis as measured by electrodes on the scalp. An event or audiovisual stimulus is introduced via a digital display and headphones. The timing and amplitude of the brain’s responding electrical signals (or potentials) yield the ERP components such as the N200 and P300. Each component reflects a different cognitive operation. The preceding N or P indicates the negative or positive polarity associated with the electrical response, whereas the number indicates the peak latency of the component response in milliseconds.

Sens.ai does not provide raw ERP results.