ACTIVATIONS AND SIGNALS ◆ NEURONS AS FUNCTIONS SIGNAL MONOTONICITY ■ BIOLOGICAL ACTIVATIONS AND SIGNALS NEURON FIELDS NEURONAL DYNAMICAL SYSTEMS COMMON SIGNAL FUNCTION PULSE-CODED SIGNAL FUNCTIONACTIVATIONS AND SIGNALS ◼ NEURONS AS FUNCTIONS ◼ SIGNAL MONOTONICITY ◼ BIOLOGICAL ACTIVATIONS AND SIGNALS ◼ NEURON FIELDS ◼ NEURONAL DYNAMICAL SYSTEMS ◼ COMMON SIGNAL FUNCTION ◼ PULSE-CODED SIGNAL FUNCTION