1. Partners 1999 Posttest Reminders/Updates CCN/Quiz Unit XIV Part II
March 23
Partners
1999 Posttest
Reminders/Updates
CCN/Quiz
Unit XIV Part II

2. Reminders/Updates Flex Psych Bowl Review – today and tomorrow
Lunch Book Review – tomorrow
Night Review #1 – Tuesday!
iScore5 Review app – $4.99
Barron’s Books

3. Modules 20-21 – The Other Senses CCN/Quiz
Unit XIV Part II
Modules – The Other Senses
CCN/Quiz

4. Just like light waves from the electromagnetic spectrum, we detect sound from SOUNDWAVES in the air around us.
  a. Sound waves travel faster through SOLIDS and slower through AIR.
b. FREQUENCY Distance from peak to peak Determines pitch (hertz) AMPLITUDE Distance from top to bottom Determines volume (decibels) *damage at 80 decibels
Hearing/ Audition

5. Structure

6. Structure (inner ear) a. Oval Window: Opening to the inner ear.
Similar to ear drum – vibrating membrane
b. Cochlea:
Snail-shaped inner ear mechanism.
Lined with neural receptors for hearing.
 c. Basilar Membrane:
Lining of the cochlea containing receptor neurons.
Hair Cells – found on basilar membrane
These are the receptor cells for hearing
They are surrounded by fluid and bend when fluid vibrates
d. Auditory Nerve (top):
Made of axons of the hair cells.
Send signal to temporal lobes.
Structure (inner ear)

7. How do we hear? - Pitch 5. PLACE THEORY:
Pitch is determined by the PLACE on the BASILAR MEMBRANE where the sound waves stimulate hair cells.
  a. This is proof for how we hear: HIGH PITCH
  b. This is NOT proof for how we hear: Medium/Low
6. FREQUENCY THEORY:
Our brain reads PITCH based on the FREQUENCY/SPEED of the neural signals coming in from the auditory nerve.
a. This is proof for how we hear:
Medium/Low and some high pitches
b. This is still NOT proof for how we hear: Extremely high pitch
How do we hear? - Pitch

8. How do we hear? - Pitch 7. VOLLEY PRINCIPLE:
Neural signals DO NOT all fire at once. They ALTERNATE in firing. In other words, they VOLLEY back and forth.
When certain neurons fire together, it creates a GREATER frequency, explaining HIGHEST pitch sounds.
How do we hear? - Pitch

9. How do we hear? - solids/air - localization
8. Sound waves AND Bone Conduction: a. Why is pitch different on a video recording? You always hear – air AND bone conduction Others only ever hear AIR conduction b. Plug your ears and talk. This is an example of BONE CONDUCTION. 9. How do we locate sounds in space? *Clapping Activity Your ears are separated for one to pick up the sound slightly faster than the other. You instinctively locate the sound as directed by the ear that picks up the signal first.
How do we hear? - solids/air - localization

10. March 28 Term 4 Begins Letter Final Exam ScoresScores New Seats Rewind
Finalize Unit XIV – Senses
Begin Unit XV – Intelligence and Testing
CCN/Quiz
Project Unit XVI – Personality
Reminders

11. Damage

12. Hearing Damage Conduction Deafness Nerve Deafness
Damage to outer or middle ear. (sound cannot be CONDUCTED in)
Wax build-up/cold/ear Infection/Ear drum bursts
Treatment:
Get well/clean ears/hearing aids to amplify sound
Lack neurons or functioning neurons (hair cells)
Auditory nerve damage
Cochlear damage
Genetics/environment/aging
Treatment:
Hearing Aids/Cochlear Implants
 Tinnitus:
Ringing in the ears
Genetics/aging/noise exposure/virus/water
Hearing Aids/Maskers

13. Equilibrium -Vestibular -Kinesthesis
Vestibular (balance)
Kinesthesis (body position/limbs/movement)
11.We all have a sense of where our BODY is in relation to the space around us.
12. This is controlled by MOTION sensors.
13. Our sense of the position of our body, such as our head, limbs, legs, etc. is called KINESTHESIS.
14. These sensors are part of the VESTIBULAR system. They are located in the SEMI-CIRCULAR canals in our inner ears.
When the head rotates, FLUID in the SEMI- CIRCULAR canals moves.
The movement of the fluid causes small particles called VESTIBULAR SACS to move and bend receptors in the canals
If you spin around, the sacs and fluid continue to move when you stop, giving your body the SENSE that it is still moving in space by stimulating the HAIR CELLS.
Equilibrium -Vestibular -Kinesthesis

15. Touch Taste Smell The Other Senses Document.docx

16. Unit XVI - Personality Project
DUE – See Calendar (change) Poster DUE April 14th
C:\Users\annielsen\Desktop\Calendars\4-1.docx

17. Unit XV – Intelligence and Testing
Modules \..\..\Term IV\Unit XV Intelligence and Testing\Notes\Unit XV.pptx
CCN/Quiz

18. Reminders CCN Modules 63-64 & red section DUE THURSDAY
Come in tomorrow or after school music trip
CCN Modules DUE APRIL 12 (last one)
Personality Poster DUE APRIL 14th (changed on calendar)
Night Review TONIGHT 5-8 p.m. library (snacks)
Flex Book Review TOMORROW modules 16-25
Flex Psych Bowl Review THURSDAY
Lunch Book Review THURSDAY modules 26-30
Reminders