A cognitive/multisensory stimulation system simulates real sports action/jobtaskscenarios for assessing, profiling, practicing, improving or rehabilitatingcognitivefunction performance of athletes or individuals. Cognitive functionimprovementcan be provided by: establishing with a subject a sensory semantic languageforrelating a number of sensory signals to corresponding possible actions, thesensory semantic language being essentially new to the subject； instructingtheathlete to perform an task involving sport/job skills； providing to thesubject duringthe task sensory signals requiring rapid discernment by the subject of thesemantic meaning of the sensory signal to correctly chose one possible action；and determining whether the subject correctly responds to the selected sensorysignal during the task； obtaining a cognitive-sensor reaction-time map over avisual field of the subject； and repeating the steps over multiple repeatedtasksusing selectively randomized sensory signals selected to progressively restorethe cognitive-sensor reaction-time map a normal profile.
