Psychology notes

1. Tuesday, February 9, 2016
1
Sensory-Perceptory
site of transduction Absolute threshold
Visual rods & (co)nes a candle from 20 miles away
auditory basilar membrane along the
cochlea
a watch ticking from 30 ft away
tactile skin a bee wing falling from 3 cm
above the cheek
gustatory taste cells within the taste buds 1 tsp of sugar in 2 g of H2O
olfactory cilia along the olfactory bulb 1 drop of perfume in a small
house
Psychology
- Dichotic listening exercise
Present Absent
Yes HIT false Alarm
No MISS Correct rejection
- Detecting a stimulus is much more than the strength of that stimulus
- The smallest amount of stimulus that needs to be added or reduced that is required
for us to detect whether or not there is a change in that stimulus
- Webber's law: The just noticeable difference is a constant proportion of the stimulus
- Vision: 1.7%
- Kinesthesis: 2%
- Pain: 1/30
- Audition: 1/10
- Pressure: 1/7
- Smell: 1/4

2. Tuesday, February 9, 2016
2
- Taste: 1/3
- James Vicary subliminal
- Assumptions, experiences and expectations affect how we see the world, motivations
and frame of reference
- Perceptual segregation–knowing what goes with what
- Camouflage–the deliberate alteration of Figure Ground
- Apparent motion is the same as stroboscopic
- Simplicity–law of pragnands
- Monocular cues
• Linear perspective
• Interposition
• Relative size
• Texture gradient
• Shadowing
• Relative clarity
• Height of plane
• Motion parallax
- Binocular cues
• Retinal disparity