Chapter 4 Flashcards
1
Q
Identify 3 properties of light
A
- Wavelength = Hue
- Amplitude = brightness
- Purity = Saturation
2
Q
compare Trichromatic and opponent processes
A
- Trichromatic Theory - where cones are divided into three colours
- Opponent Process Theory - complimentary colours will blend to make grey tones, creates afterimages
3
Q
Lens
A
Focuses light rays that fall on the Retina
4
Q
Retina
A
- Neural tissue lining on the back of the eye
- absorbs light
- processes images
- sends visual information to the brain
5
Q
Cones
A
Speciliased visual receptors that play a key role in daylight vision and colour vision
6
Q
Rods
A
Specialised visual receptors that play a key role in night vision and peripheral vision
7
Q
Visual Pathway to the brain
A
- Light enters eye
- light information processed in retina
- axons in optic nerve fire
- travel through Optic Chiasm
- information from inside half of each eye cross over
- through geniculate nucleus of the thalamus
- arrive at occipital lobe
8
Q
Optic Chiasm
A
the point where axons from inside of each eye cross over and become contralateral
9
Q
Key physical properties of sound
A
Wavelength - Pitch
Amplitude - Loudness
Purity - Timbre
10
Q
Sensory Processing in the Outer Ear
A
- Pinna is the sound collecting cone
- funnels sound to the eardrum
11
Q
Sensory Processing in the Middle Ear
A
- Vibrations in the eardrum through the Ossicles (bones called hammer, anvil and stirrup)
- Ossicles conver large movements into smaller motions with greater forces
- amplify tiny changes in air pressure
12
Q
Sensory Processing in the Inner Ear
A
- consists of the cochlea; coil which is filled with fluid
- vibrations move through the basilar membrane
- Basilar membrane holds auditory receptors called hair cells
