Interactive

Compare Signatures

Place any two cortical-response signatures side by side — a normal adult against an absent response, an infant P1 against a delayed one, aided against unaided — and read how their shapes differ.

Normal awake adult

0100200300400latency (ms)Suprathreshold
A large, clear N1–P2 well above the noise — the reference adult response.

Absent response

0100200300400latency (ms)No response
A flat trace within the noise — no detectable cortical response.