Human beings traditionally have five senses - sight, hearing, taste, smell, and touch - that provide data for perception. These senses are studied by fields like neuroscience and philosophy of perception. Aristotle was credited with classifying the five traditional senses, while Kant proposed that our knowledge depends on our modes of perception. Each sense has an associated organ - the eye for sight, nose for smell, ear for hearing, tongue for taste, and skin/nerves for touch. The brain interprets signals from these sensory organs to represent and understand the environment.