Perception vs. Sensation
by Oswaldo Koch, MBA, P. Eng.

Without the ability to organize and interpret sensations, life would seem like a meaningless jumble of colors, shapes, and sounds. A person without any perceptual ability would not be able to recognize faces, understand language, or avoid threats. Such a person would not survive for long. In fact, many species of animals have evolved exquisite sensory and perceptual systems that aid their survival.

Sensation usually refers to the immediate, relatively unprocessed result of stimulation of sensory receptors in the eyes, ears, nose, tongue, or skin. Sensation is a mental process (as seeing, hearing, or smelling) resulting from the immediate external stimulation of a sense organ. Sensation is the first stage in the biochemical and neurologic events that begins with the impinging of a stimulus upon the receptor cells of a sensory organ, which then leads to perception.

Perception, on the other hand, better describes one’s ultimate experience of the world and typically involves further processing of sensory input. Perception is process by which organisms interpret and organize sensation to produce a meaningful experience of the world. In practice, sensation and perception are virtually impossible to separate, because they are part of one continuous process. For example, light, in the form of electromagnetic radiation, causes receptor cells in our eyes to activate and send signals to the brain. But we do not understand these signals as pure energy.Our sense organs translate physical energy from the environment into electrical impulses processed by the brain.

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Perception is the process by which people translate sensory impressions into a coherent and unified view of the world around them.

Though necessarily based on incomplete and unverified information, perception is 'the reality' and guides human behavior in general.

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Cucumber Tuna Salad (Recipe for 4 servings)

Ingredient Amount

• English cucumber, thinly sliced - 1 large
• Tuna, chunk - 1 can
• Salt and pepper - To taste
• 1 small onion, diced and wash - 1/2 cup
• Nonfat plain yogurt - 1/4 cup
• Garlic powder - 1 tablespoon
• Grated Parmesan cheese - 2 tablespoons
  
  Directions
  
  Arrange cucumber slices in a single layer in the bottom of a bowl. Sprinkle with salt and pepper. Add a layer of onions with tuna, and top with a layer of yogurt. Continue layering all the remaining cucumbers, onions, and yogurt this order. Top off with a final layer of yogurt. Sprinkle with garlic powder, and parmesan cheese. Cover and refrigerate for 1 hour before serving.

People only see what they are prepared to see.
~ Ralph Waldo

There is nothing either good or bad, but thinking makes it so.
~ William Shakespeare

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~ Lao-tzu Quotes

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