Bill Scott: The Neurophysiology of Fear and State Specific EEG Changes Futurehealth Plenary Talk by Bill Scott Fear states were induced in subjects to determine how their EEG, heart rate, and mental processing would change when compared to a neutral condition. We found significant differences in cognition, EEG and heart rate. Subject?s (15-30Hz) amplitudes and cognitive functioning significantly dropped in amplitude while experiencing fear. Half of them had significant reductions in alpha (8-11Hz) and theta (5-8Hz). Doesn?t reducing alpha, theta, and high beta improve cognition? Or do we just need a new measuring stick for wave analysis that goes beyond amplitude, frequency and variability? Perhaps I?ve found one.