DID YOU HEAR THAT?

DID YOU HEAR THAT? Volunteer Time!!

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 (.000027sec. Diff) Sound travels @ 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

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) http://www.noiseaddicts.com/2009/03/can-you-hear-this-hearing-test/ Link to a hearing test ©1999 Prentice Hall

McGurk Effect When visual cues and sounds conflict!

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

Starburst time!! (146-150) 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?

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

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

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

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

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

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.

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

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. 142-146

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.

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.

Phantom Limb Pain Why do some people feel pain in limbs that have been amputated? How do you treat pain in absent limbs? Page 144