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BIOLOGY 1A03 (746)
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Department
Biology
Course
BIOLOGY 1A03
Professor
Lovaye Kajiura
Semester
Spring

Description
Psychology Live Lecture  ­ Ear­ capturing changes in air pressure compared to vision where we are focusing  on electromagnetic wavelengths  ­ Commonalities in stimulus between vision and auditory­ both involve  wavelengths and explore relationship between waves and frequency  ­ Both concepts relate to colour  Sound waves ­ Characterized by compression (peaks of curves) and refraction(troughs) ­ Vibrations of speaker is compressions of sound  ­ Perception that sound is linear, but sound is emitted in all directions and creates  ripples  ­ Frequency is interpreted, as pitch­ higher frequency is higher pitch. Lower  frequency is lower pitch.  ­ Second component is amplitude­ measures of loudness and is measured in  decibels­ each decibel is 2 fold increase in loudness  ­ faint sounds we can hear­ mosquito 2 m away  ­ last component­ timbre­ measure of complexity/ purity (sign curve)  Ear structure  ­ oscicles is a leverage system and stirrup is used to amplify sound. We have  muscles connected to bones on oscilles to control sound. Muscles will heighten up  and restrict certain sound exposure (stapes and stapedius muscle) ­ hearing your own voive­ your voide sounds different thant your voice on  recording because information taken in an processed by your brain  ­ noise induced hearing loss­  ­ noise induced hear today, the less noice you will here tom.  Mussic Perception ­ musician experiment­ more and more of your brain devoted to
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