1. DID YOU HEAR THAT?

2. DID YOU HEAR THAT? Volunteer Time!!

3. Auditory Localization- vid clip
Sensation & Perception
11/21/2018
Auditory Localization- vid clip
The brain calculates a sound’s location by using these differences.
Timing ( sec. Diff)
Sound 750 mph
Sound Waves
Loudness (amplitude)
Pitch (frequency)
Long waves; low frequency/low pitch
Short waves; high frequency/high pitch
Sounds from different directions are not identical as they arrive at left and right ears
Figure 3.14 from:
Kassin, S. (1998). Psychology, second edition. Upper Saddle River, NJ: Prentice Hall.
©1999 Prentice Hall

4. Auditory Process: Perceiving Pitch
Sensation & Perception
11/21/2018
Auditory Process: Perceiving Pitch
Frequency Theory: Measures neural impulses travelling the auditory nerve. (low)
Place Theory: Links the pitch we hear with the place that is stimulated in the cochlea (high pitch)
Link to a hearing test
©1999 Prentice Hall

5. McGurk Effect
When visual cues and sounds conflict!

6. Sensation & Perception
11/21/2018
Sensory Interaction
Different sensory modalities exist because signals received by the sense organs stimulate different nerve pathways leading to different areas of the brain.
Synesthesia
A condition in which stimulation of one sense also evokes another.
©1999 Prentice Hall

7. Starburst time!! ( )
Conduct the experiment and answer the following questions with your partner.
What factors influence taste?
What are the 5 basic tastes?
Explain sensory interaction & provide an example.
Describe the process of smell?

8. Smell: The Sense of Scents
Sensation & Perception
11/21/2018
Smell: The Sense of Scents
Airborne chemical molecules enter the nose and circulate through the nasal cavity.
Vapors can also enter through the mouth and pass into nasal cavity.
Receptors on the roof of the nasal cavity detect these molecules.
©1999 Prentice Hall

9. Sensation & Perception
11/21/2018
Olfactory System
Figure 3.16 from:
Kassin, S. (1998). Psychology, second edition. Upper Saddle River, NJ: Prentice Hall.
The brain’s circuitry for smell also connect with areas involved in memory storage.
©1999 Prentice Hall

10. Taste is a chemical sense
Sensation & Perception
11/21/2018
Taste is a chemical sense
Photograph of tongue surface (top), magnified 75 times.
10,000 taste buds line the tongue and mouth.
Taste receptors are down inside the “bud”
Children have more taste buds than adults.
Figure 3.17 from:
Kassin, S. (1998). Psychology, second edition. Upper Saddle River, NJ: Prentice Hall.
©1999 Prentice Hall

11. Sensation & Perception
11/21/2018
Different Tastes
Different people have different tastes based on:
Survival
Culture
Learning
Food attractiveness
©1999 Prentice Hall

12. Which of our senses do you believe is most AND least vital to our existence? Explain.

13. The Environment Within
Kinesthesis
The sense of body position and movement of body parts; also called kinesthesia.
Ian Waterman vid. clip
Equilibrium (vestibular sense)
The sense of balance.
Vision interacts with motion/balance
Optic flow- vid. clip
Semicircular Canals
Sense organs in the inner ear, which contribute to equilibrium by responding to rotation of the head.

14. Sensitivity to Touch Figure 3.18 from:
Kassin, S. (1998). Psychology, second edition. Upper Saddle River, NJ: Prentice Hall.

15. Pain What if you were born without the ability to perceive pain?
What contributes to our experience of pain? Use your book to identify multiple factors. P

16. Gate-Control Theory of Pain
Experience of pain depends (in part) on whether the pain impulse gets past neurological “gate” in the spinal cord and thus reaches the brain.

17. Neuromatrix Theory of Pain
Theory that the matrix of neurons in the brain is capable of generating pain (and other sensations) in the absence of signals from sensory nerves.

18. Phantom Limb Pain
Why do some people feel pain in limbs that have been amputated?
How do you treat pain in absent limbs?
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