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UTC / Psychology / PSY 3120 / Illustrate the perceptual process.

Illustrate the perceptual process.

Illustrate the perceptual process.

Description

School: University of Tennessee - Chattanooga
Department: Psychology
Course: Sensation and Perception
Professor: Amanda clark
Term: Fall 2017
Tags: sensation, perception, sensation and perception, Psychology, and Vision
Cost: 50
Name: Sensation&Perception StudyGuide
Description: This packet is notes taken from both the lectures and from books! It covers material that will be on the exam in one condensed 16-page PDF!
Uploaded: 10/01/2017
16 Pages 97 Views 1 Unlocks
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Chapter 1 - IntroductionWe also discuss several other topics like What is gauss-jordan method?

Why read this book?

  • Provides a solid background in the study of perception, that might be useful in future careers
  • Sensation and perception is not only useful for understanding humans and the brain, but also with technology and robotics - creating face recognition software, for instance
  • Helps create an appreciation for this process, as well as for the world we are perceiving at a subconscious level

The perceptual process

  • “Perception depends on the properties of sensory receptors”

Perceptual Process - The process that begins with environmental stimuli and ends with the conscious experience of perceiving the stimulus, recognizing it, and acting on itDon't forget about the age old question of Who are the key resources in business?

Sensation - The more elementary processes at the beginning of the sensory system

        Example: light stimulating light receptors in eye

Perception - higher - order processes that involve interpretation and memory that occur in the brain

  • It can be difficult deciding where are ends and the other begins

Don't forget about the age old question of What is constructive discharge?

Distal and proximal stimulus

  • Neither of these involve internal pain perception or the ability to feel where our bodies are in space

Distal stimulus - What exists out in the universe. For example, a tree, or light reflecting off of a treeDon't forget about the age old question of What kinds of issues can elasticity help us understand?

Proximal stimulus - The stimulus as it is represented by our sensory organs. For examples the flipped image of a tree on our retina

Principle of transformation - “Stimuli and responses created by stimuli are transformed, or changed, between distal stimuli and perception”

Principle of representation - “Everything a person perceives is not based on direct contact with the stimulus. Rather, it’s based on a representation of stimuli that are formed on the receptors, as well as the resulting activity in this person’s nervous systemDon't forget about the age old question of What are the 4 major fields of anthropology?

  • Here, the distal stimulus (tree) is transformed into the proximal stimulus, which is only a representation of the trees

If you want to learn more check out What does the proportion of income mean?

Receptor processes (step 3)

Sensory receptors - specialized sensory cells that respond to a specific type of environmental energy

Transduction - Transforming one type of energy into another type

  • Rods and cones transform light energy into electrical energy. Ears transform sound waves, nose senses airborne chemicals, tongue detects chemicals in a solution, skin feels pressure

Neural processing (step 4)

  • After transduction, the signals travel through neurons and are transmitted and processed

Neural processing - This changing process

Primary receiving area - In the cerebral cortex “skin” of the brain, specialized area where sense signals are allocated

  1. Occipital lobe - vision
  2. Temporal lobe - Ears
  3. Parietal lobe - skin
  4. Frontal lobe - all! Coordination

Behavioral responses (step 5,6,7)

  • Electric signals are transformed into conscious experience. The person perceives a tree, and then recognizes it. This allows them to act - do they want to approach the tree? Take a picture? Avoid?

Knowledge - any information a perceive brings to the situation can and probably will affect perception

Visual form agnosia - Inability to recognize objects. Fault in perception

Bottom - up processing - Judgements made based on sensation - rather than perception, less human error, but much slower. “Data processing”

Top - down processing - Judgements made based on previous experiences. More human error, but faster “knowledge - based processing”

Measuring perception

Threshold - The limits of our sensory systems, the minimums that our senses can detect

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