An apparatus for evaluating cognitive function of a patient. The apparatus has a physiological monitor adapted to output physiological measurements of a given bodily function of the patient, wherein the bodily function is regulated by the autonomic nervous system of the patient； a cognitive exercise evaluator adapted to obtain performance information of the patient when carrying out a cognitive exercise with a given difficulty； a general-purpose processor； and computer-readable memory adapted to store program code for evaluating the cognitive function of the patient, the program code comprising instructions to receive the physiological measurements and the performance information, and provide an evaluation of the cognitive function of the patient.
