Book Definition

A process that makes sensory patterns meaningful. It is how you interpret a sensation. Meaningful units of perception are known as percepts. Perception draws heavily on memory, motivation, emotion, expectation, and other psychological processes. Every person percieves things in a different way, no two people have the same perceptions.


Perceptual Processing: Finding Meaning in Sensation

Many concepts surround perceptual processing such as: Feature detectors , Bottom-up processing , Top-down Processing and Perceptual Constancy.

Perceptual Ambiguity and Distortion

Gestalt Laws of Perceptual Grouping helps us understand the way we perceive things by patterns. It is the "nature" of perception. Learning-based inference is the "nurture" of perception. It is when we use past experiences to help us percieve certain things.

Theoretical Explanations for Perception

Because of sensation and perception we experience Illusions. This is the way you can perceive things, which can be affected by various Monocular Cues and Binocular Cues. The brain perceives the world in two ways. It uses Bottom-up Proccessing to analyze incoming information from the senses and to figure out what it means. The brain also uses Top-down Proccessing to use prior knowledge, expectations, memory, motivation, and culture to perceive an object or event.

In Your Own Words:
  • How we associate meaning with our sensory experiences.
  • Dependent on the individual's memory, motivation, emotion, expectation, experiences, etc.
  • How your brain views and identifies things.
  • The way your brain interprets information from your 5 main senses.
  • When you go out on a fall day, your perception is that the leaves changing color look pretty.
  • Perceptionthe reason behind the five senses and why things are a certain way
  • Our sensory experience of our surroundings and involves the recognition of environmental stimuli and actions in response to these stimuli.
Examples:
  • You might percieve a certain type of food as something that tastes good, while someone else might think it tastes bad.
  • You perceive rain as romantic and thrilling while your friend perceives it as depressing and cold.
  • You and your friend examine an ink blot. You may see it as a picture of a butterfly, but your friend may see a flower.
  • When you walk outside, the wind hitting your skin is the sensation. You deciding it is cold out and it's becoming winter is your perception of this sensation.
  • You percieve the beach as a peaceful place, while your friend precieves it as a stressful place because she has a fear of drowning.
  • Someone may perceive a dog as scary but someone else may see it as cute.
  • Your walking to the bustop and you see a figure walking up, you perceive it to be your friend Tom.
  • Your perception of hand sanitizer might smell good to you, but repulsive to someone else.

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What We Sense Also Depends On What We Are Expecting:
  • Perceptual Set- a readiness to detect a particular stimulus in a given context
    • FOX;OWL;SNAKE;TURKEY;D?CK
    • BOB;RAY;DAVE;BILL;TOM;D?CK

Additional Resources:

http://www.youtube.com/watch?feature=endscreen&v=UAF635wdRCM&NR=1
Perception