Mental arousal level regulation system and method

A computing device comprising:

• a controller;
• a speaker coupled to the controller;
• an interface coupled to the controller;
• and a non-transitory computer readable medium having stored thereon computer implementable instructions executable by the controller, the controller being configured to perform a method of mental arousal level regulation including:
• providing at least one stimulus as a virtual reality environment via the interface for a time duration, the virtual reality environment being perceptible to a subject;
• acquiring bioelectric signals from a subject via at least one sensor concurrently with the providing of the at least one stimulus;
• based on the bioelectric signals, determining a mental arousal score for the subject for the time duration;
• providing a virtual object in the virtual reality environment;
• and
• responsive to the mental arousal score, controllably varying at least one of the virtual object and the at least one stimulus.