frequency following response (FFR)

The frequency following response (FFR) is a measure of how well the brain can track the sound signals it receives, especially the pitch and timing. When you hear a sound, like speech or music, your brain's neural activity can mimic or "follow" the frequency of that sound. By recording this electrical activity using specialized equipment, scientists can assess how accurately the brain processes complex sounds, which is useful for understanding hearing abilities, detecting hearing disorders, or studying language processing. In essence, FFR reveals how your brain represents the sounds you hear at a neural level.