Methods and apparatus for adaptively mitigating motion sickness in an operator are provided herein. In some embodiments, a compensatory modulator for use with a display controller included in a system to adaptively mitigating motion sickness in an operator may include one or more inputs to receive at least one of physiological measurements of the operator or operator activity behavior from one or more monitoring devices, and a motion sickness expert system configured to (a) determine a cognitive state of the operator based on the received inputs, (b) compute mitigating display parameters based on the determined cognitive state of the operator, (c) output the computed mitigating display parameters to the display controller.
