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PSYCH JOURNAL 9/25/2013

PSYCH JOURNAL 9/25/2013. What sounds do you enjoy? What sounds so you hate? What songs hold memories for you?. Hearing. If a tree falls in a forest, and nobody hears it, is there a sound?. Psychologically speaking, no.

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PSYCH JOURNAL 9/25/2013

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  1. PSYCH JOURNAL 9/25/2013 • What sounds do you enjoy? • What sounds so you hate? • What songs hold memories for you?

  2. Hearing

  3. If a tree falls in a forest, and nobody hears it, is there a sound? • Psychologically speaking, no. • Sound is a psychological event that depends on the nervous system to send the physical energy of a sound wave to nerve impulses in our brain. • Without a brain to register the energy, there is no sound!!!!!

  4. What we hear • Sound is the vibration of molecules (gas, liquid, or solid) that creates a wave of pressure • Auditory – Related to the sense of hearing

  5. Three Characteristics of Sound Waves 1. Loudness • Related to the intensity of the wave’s pressure • Corresponds to the height of the wave • Measured in decibels

  6. Three Characteristics of Sound Waves 2. Pitch • Related to the frequency of the wave • Frequency refers to how rapidly the wave vibrates High Pitch = High Frequency Low Pitch= Low Frequency

  7. Three Characteristics of Sound Waves 3. Timbre • Refers to the quality of a sound and the complexity of the sound wave • A pure tone consists of only one frequency (rare) • We hear complex waves consisting of several sub waves with different frequencies

  8. Anatomy of the ear • Cochlea – snail shaped structure in the inner ear that contains the receptors for hearing • When a sound wave enters, fluid in the cochlea vibrates • This vibration creates wavelike motions that push on the basilar membrane (which runs through the middle of the cochlea) • Cilia- Hair cells in the ear rise and fall, which initiates a signal that is passed on to the auditory nerve • Loud noises can damage the hair cells in your ear!!!

  9. On to the brain • Eardrum – Sound waves cause it to vibrate • Auditory nerve –Carries auditory messages to the brain (auditory cortex in temporal lobe)

  10. Perceiving the auditory world • In the brain, sounds are organized to construct a meaningful auditory world • We remember sounds, and can recognize people’s voices, songs, etc. • Sounds help us estimate distance and direction • What we expect to hear influences what we actually hear • We can hear our name in a loud room

  11. http://www.youtube.com/watch?v=xbe-oIehMDM&feature=related • http://www.youtube.com/watch?v=J3jrWVp2L7U • https://www.youtube.com/watch?v=CD-E-LDc384 • http://www.youtube.com/watch?v=wCfWHqrYUqo • https://www.youtube.com/watch?v=W-fFHeTX70Q

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