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Chapter 4 SENSATION AND PERCEPTION

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Chapter 4 SENSATION AND PERCEPTION Section 1: Sensation and Perception: The Basics Section 2: Vision Section 3: Hearing Section 4: Other Senses Section 5: Perception – PowerPoint PPT presentation

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Title: Chapter 4 SENSATION AND PERCEPTION


1
Chapter 4SENSATION AND PERCEPTION
  • Section 1 Sensation and Perception The Basics
  • Section 2 Vision
  • Section 3 Hearing
  • Section 4 Other Senses
  • Section 5 Perception

2
Question In what ways do sensation and
perception contribute to an understanding of our
environment?
Section 1 Sensation and Perception The Basics
  • SENSATION AND PERCEPTION CONTRIBUTE TO AN
    UNDERSTANDING OF OUR ENVIRONMENT
  • Sensation provides information to the central
    nervous system about the physical environment
  • Perception is the process through which people
    interpret sensory stimulation

3
Question How does the eye enable vision?
Section 2 Vision
  • THE EYE AND VISION
  • Light enters the eye and then is projected onto a
    surface
  • The amount of light that enters the eye is
    determined by the size of the pupil which adjusts
    automatically to the amount of light entering the
    eye
  • Once light enters the eye, it encounters the lens
    which adjusts to the distance of objects by
    changing its thickness

4
Question How does the eye enable vision?
Section 2 Vision
THE EYE AND VISION (continued)
  • These changes project a clear image of the object
    onto the retina, which consists of neurons that
    are sensitive to the light called photoreceptors
  • Once the light hits the photoreceptors, a nerve
    carries the visual input into the brain where the
    information is relayed to the visual area of the
    occipital lobe

5
Question How does the ear perceive sound?
Section 3 Hearing
  • HOW THE EAR PERCEIVES SOUND
  • Sound enters the outer ear and is funneled to the
    eardrum
  • Inside the middle ear, the hammer, anvil, and
    stirrup vibrate, transmitting the sound to the
    inner ear
  • Within the brain, auditory input is projected
    onto the hearing areas of the cerebral cortex

6
Question What are the chemical, skin, and body
senses?
Section 4 Other Senses
  • CHEMICAL, SKIN, AND BODY SENSES
  • Smell allows a person to taste
  • Taste sweetness, sourness, saltiness,
    bitterness, and umami (meaty or savory)
  • Skin senses of pressure, temperature, and pain
  • Vestibular and kinesthetic body senses

7
Question What are the laws of sensory perception?
Section 5 Perception
  • LAWS OF SENSORY PERCEPTION
  • Closure the tendency to perceive a complete or
    whole figure even when there are gaps in what
    your senses tell you
  • Figure-ground perception the perception of a
    figure against a background
  • Proximity the tendency to group together visual
    and auditory events that are near each other

8
Question What are the laws of sensory perception?
Section 5 Perception
LAWS OF SENSORY PERCEPTION (continued)
  • Similarity thinking of similar objects as
    belonging together
  • Continuity the tendency to group stimuli into
    continuous patterns

9
Question What are the five types of sensation?
Senses
Body Senses
Vision
Hearing
Smell
Touch
Taste
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