Ch4_Psych100_Fall2010_JRF_2of3 - Outline • Sensation...

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Unformatted text preview: Outline • Sensation overview • Hearing (audition) • Vision • Chemical Senses • Somatic Senses Announcement s • Last day to drop course: Fri Oct 15 th • Midterm Qs review in office hours this Thurs & next Mon • Form to dispute a midterm Q due next Wed 5pm • “Future Memory” tonite 8pm in Knight Auditorium, Spurlock DD Concept check Rachel often has trouble hearing a student’s question, but by bending her ears she can hear better. She is manipulating her _____ to help her hear better. A) sensory receptors B) transduction mechanisms C) auditory cortex D) accessory structures Concept Check • Dog whistles have a pitch too high for humans to hear. This means that the sound waves from dog whistles must have... (A) High amplitude. (B) Low amplitude. (C) Unusual timbre. (D) High frequency. (E) Low frequency. Poll • Do you prefer for me to read the question out loud, or just put it on the screen and let you read it? (A) read out loud (B) just put on screen (C) no preference Hearing: How to Code? • For low frequencies: – Frequency matching : Cells fire at same frequency as the sound! • Volley coding: Cells “team up” • For higher frequencies (>1000 Hz): – Place coding: Separate cells for different frequencies! – Nerve deafness: Lose cells for high- frequencies from age, hearing damage L.O. 12 Hearing Sound is modified by the pinna, ear drum, and ossicles; then it is transduced into a neural signal by the hair cells in the...
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This note was uploaded on 01/27/2011 for the course PSYCH 100 taught by Professor Grison during the Fall '07 term at University of Illinois at Urbana–Champaign.

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Ch4_Psych100_Fall2010_JRF_2of3 - Outline • Sensation...

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