To take out the useful parts of the food, the digestive system breaks the food down into small pieces. This process is called digestion. The parts of the food which are not useful just pass through the body.
The interrogation. Interrogations consist of three pulses, 0.8 Î¼s in duration, referred to as P1, P2 and P3. The timing between pulses P1 and P3 determines the mode (or question) of the interrogation, and thus what the nature of the reply should be. P2 is used in side-lobe suppression, explained later.
SSEPs are commonly used to assess prognosis after. cardiac arrest, and the current AAN practice parameters state. that the bilateral absence of the N20 response between 24 and. 72 hours after cardiac arrest can accurately predict poor pro-. gnosis in patients who have not undergone hypothermia.15,19.