Apparatus for the assessment of electrophysiological signals obtained from a patient, the apparatus comprising: a housing； a support arch pivotally mounted to the housing, the support arch comprising a plurality of facial contact point supports for supporting contact points on the face of the patient relative to the support arch without supporting the chin of the patient； at least one display screen for presenting a stimulus to a single eye of the patient, the at least one display screen being movable relative to the support arch； and control electronics disposed within the housing for driving the at least one display screen and for amplifying electrophysiological signals obtained from the patient.
