Final answer:
Normal vision with prosopagnosia highlights the difference between the physical ability to see (sensation) and the brain's interpretation of what is seen (perception). Subliminal sensation entails perceiving stimuli without conscious awareness, which contrasts with the conscious perception difficulties seen in prosopagnosia.
Step-by-step explanation:
Normal vision accompanied by prosopagnosia helps illustrate the distinct processes involved in sensation and perception. Prosopagnosia, or face blindness, is a condition where an individual has normal vision yet cannot recognize familiar faces, including their own, indicating that while sensory information (sensation) may be intact, the interpretation of this visual information (perception) is impaired.
In contrast, subliminal sensation and subliminal persuasion involve perceiving stimuli below the conscious threshold of awareness. This shows that messages or stimuli can impact our sensory system without our conscious recognition. Prosopagnosia thus distinguishes between the physiological capacity for sensation and the psychological processes involved in perception.
Patients with this condition may use other cues, such as voice or distinctive physical features, to recognize individuals, demonstrating alternative strategies for coping with deficits in sensory perception.