sensation perception modules 19-20 class

8/2/2019 Sensation Perception Modules 19-20 Class

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PSYC 2000

Fall 2011

Sensation and Perception,cont.


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The Stimulus Input: SoundWaves

Sound waves are composed of compressionand rarefaction of air molecules.

Acoustical transduction: Conversion ofsound waves into neural impulses in the

hairs cells of the inner ear.


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HearingSound waves:Length = frequency;Determines pitch

Height = amplitude;Determines loudness


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HearingSound waves travel from the outer ear, to

the middle ear, to the cochlea (fluid filledsnail-shaped tube).

Movement in the_cochlea__fluid disruptsreceptor cells (hair cells)on the basilar

membrane, whichtriggers nerve impulsesthat travel to the brain.


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How do we perceive loudnessand pitch?

Loudnessnumber of activated hair ells

Pitch

_place_Theorywaves of differentpitches trigger activity at different places onthe basilar membrane

Explains how we hear high-pitched sounds_frequency_Theorythe rate of nerve

impulses traveling up the auditory nervematches the frequency of a toneExplains how we hear lower-pitched sounds


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Place Theory


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Localization of Sounds

Because we have two ears, sounds thatreach one ear faster than the other makes

us localize the sound.
http://www.youtube.com/watch?v=KY7_TIktQFshttp://www.youtube.com/watch?v=KY7_TIktQFs


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Hearing Deficits

Older people tend to hear low frequencieswell but suffer hearing loss for high

frequencies.


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PROVE IT!

Mosquito Ringtones
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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Other Senses

Module 20
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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Other Important Senses

Touch

Pain

Taste

Smell

Body Position and Movement
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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Other Important Senses

Sense of touch is a mix of four distinct skinsenses- pressure, warmth, cold, and pain.
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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Skin Senses

Only_pressure__has identifiablereceptors, all other skin sensations are

variations of pressure, warmth, cold and

pain.

Burning hot
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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PainPain tells the body that something has

gone wrong. Usually pain results from

damage to the_skin_and other tissues.Some people feel no pain, while others

can experience extreme pain.
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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TasteTraditionally taste sensations

consisted of sweet, salty, sour andbitter tastes.

Recently receptors for a fifth tastehave been discovered called

_umami_

Sweet Sour Salty Bitter Umami

(Fresh

Chicken)
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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Smell

Like taste smell is a _chemical_sense. Odorants enter the nasalcavity to stimulate 5 millionsreceptors to sense smell. Unliketaste there are many different formsof smells.

Smells can also be linked to_memories__.
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/


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Sensory InteractionWhen one sense affects another sense,

sensory interaction takes place.E.g., the taste of strawberry interacts with its

smell and its texture on the tongue to produceflavor.

Synesthesia
http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.freemosquitoringtones.org/http://www.youtube.com/watch?v=KApieSGlyBkhttp://www.youtube.com/watch?v=KApieSGlyBk


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Body Position and MovementThe sense of our body parts position and

movement is called _kinesthesis__.The

vestibular sense monitors the head (andthus bodys) position.h

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Whirling Dervishes Wire Walk

BobDaemm

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ageWorks


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sensation perception modules 19-20 class

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