PSYC 110 Study Guide - Final Guide: Oval Window, Auditory Cortex, Middle Ear
29 Jun 2018
School
Department
Course
Professor
learned danger signals keep the body from experiencing pain at that moment
Pain Faciliatory Messages
learned safety and sickness signals from the brain open the gate in order to allow one to feel
pain
Thalamus
switchboard of the brain, some would say it is where consciousness happens
Properties of Sound Waves: Frequency
the faster a wave, the higher it sounds. conversely, the slower a wave, the lower it sounds.
Properties of Sound Waves: Amplitude
the more forceful a wave in height, the louder it sounds. The less forceful a wave in height
(shorter waves), the quieter.
Properties of Sound Waves: Complexity
one wave would be simple. waves on top of multiple waves would be more complex.
Outer Ear
Pinna. sound waves collected. funnels sound inward.
Middle Ear
Air filled cavity separated from the outer ear by the eardrum (tympanic membrane) amplifies
sound waves
Inner Ear
sound waves transduced into coded neuronal messages
Otoacoustic Emissions
inaudible sounds given off by the inner ear when the cochlea is stimulated by a sound. used for
hearing tests in babies. caused by the vibration of the outer hairs.
Ears on either side of the head gives us:
stereophonic hearing
Timing Method (hearing)
which ear has been stimulated first. best with low frequency sounds.
Volume Method (Hearing)
which ear is stimulated most vigorously. Best with high frequency sounds
Primary Auditory Cortex and Secondary Auditory cortex correspond to the
apex of cochlea and the base of the cochlea
Apex
highest sounds
Base
lowest sounds
Cochlea
a coiled, bony, fluid-filled tube through which sound waves are transduced and coded into
neuronal messages
Ossicles: Three bones in the middle ear which are linked to the eardrum on one end and the
oval window on another. How do they work? What are the 3 bones called?
when the tympanic membrane vibrates, the ossicles vibrate pushing against the oval window
which increases the amount of pressure that sound waves exert upon the inner ear so that
transduction can occur.
Document Summary
Learned danger signals keep the body from experiencing pain at that moment. Pain faciliatory messages learned safety and sickness signals from the brain open the gate in order to allow one to feel pain. Thalamus switchboard of the brain, some would say it is where consciousness happens. Properties of sound waves: frequency the faster a wave, the higher it sounds. conversely, the slower a wave, the lower it sounds. Properties of sound waves: amplitude the more forceful a wave in height, the louder it sounds. The less forceful a wave in height (shorter waves), the quieter. Properties of sound waves: complexity one wave would be simple. waves on top of multiple waves would be more complex. Air filled cavity separated from the outer ear by the eardrum (tympanic membrane) amplifies sound waves. Inner ear sound waves transduced into coded neuronal messages.
