1. An apparatus for evoking perceptions of affordances in a virtual environment, comprising: a processor configured with virtual reality software for generating the virtual environment; the virtual environment comprising a display arrangement in communication with the processor, the display arrangement configured to interface with a user; and an interactive control device in communication with the virtual environment, the interactive control device configured to enable the user to interact with the virtual environment, wherein the processor is further configured to determine an affordance for an object in the virtual environment, wherein the affordance is defined as an inherent use that the object furnishes to the user of the virtual environment; wherein the processor is further configured to determine whether sufficient virtual stimuli are generated for the object in order for the user to recognize the affordance and use the object in the virtual environment; wherein the processor is further configured, responsive to the virtual stimuli being insufficient for the user to recognize the affordance, to generate substitute sensory stimuli for recognized absent or inadequate sensory stimuli in the virtual environment to a degree such that the user is capable of recognizing the affordance and is enabled to use the object in the virtual environment.