Final answer:
Two characteristic physiological features that show Jason is in an altered state of consciousness are changes in brain wave patterns and reduced sensory awareness.
Step-by-step explanation:
Two characteristic physiological features that would show Jason is in an altered state of consciousness are changes in brain wave patterns and reduced sensory awareness. When a person enters an altered state of consciousness, their brain wave patterns can differ from normal wakeful states. For example, during deep sleep, delta waves predominate, while during REM sleep, rapid eye movement and heightened brain activity occur. Additionally, in altered states of consciousness, sensory awareness can be reduced. This means that the individual may not be as responsive to external stimuli as they would be in a fully awake state.