Unit 4 Chapter 5 Sensation Notes

Unit 4 – Chapter 5 – Sensation Notes

Sensation v. Perception Sensation-

Perception-

Bottom Up (Sensation) v. Top Down (Perception) Bottom Up-

Top Down-

Psychophysics Psychophysics is…………………

Light-

Sound-

Pressure-

Taste-

Thresholds 1. Absolute Threshold-

2. Subliminal-

3. Difference Threshold-

Weber’s Law-

4. Signal Detection Theory-

Sensory Adaption-

The Science of Energy and Sensation 1. Transduction-

2. Wavelength-

3. Hue-

4. Intensity-

1. Sense Number 1: The Eye Step One- Light Enters the Eye 1. Cornea-

2. Pupil-

3. Iris-

Step Two- An Image is produced 1. Lens-

2. Accommodation-

3. Retina-

Step Three- A chemical reaction is made and the image is processed in the Brain 1. Rods and Cones-

2. Bipolar Cells-

3. Ganglion Cells-

4. Optic Nerve- 5. Thalamus- 6. Visual Cortex-

7. Occipital Lobe-

Parts of the Retina-

1. Blind Spot-

2. Fovea-

3. Cones-

4. Rods-

Errors in Vision- 1. Acuity-

2. Nearsightedness-

3. Farsightedness-

Vision Involves Parallel Processing 1. Parallel V. Serial Processing-

2. Feature Detectors-

Two theories on how we see colors 1. Trichromatic (Three Color) Theory- 2. Opponent Process Theory-

Color Constancy-

Context Affects Color-

2. Sense Number Two: The Ear

Amplitude-

Frequency-

Hearing Threshold

Decibels Parts of the Ear

1. Outer Ear- Job-

Parts-

2. Middle Ear- Job-

Parts-

3. Inner Ear- Job-

Parts-

How we Hear-

Step One:

Step Two:

Step Three:

Step Four:

Step Five:

Step Six: Step Seven:

Inner ear and Vestibular Sense

Vestibular Sac-

Vestibular Sense-

How Do we Perceive Pitch:

Theory One- Helmholtz’s Place theory-

Theory Two- Frequency Theory-

Volley Principle-

How do we Locate Sounds?

Parallel Processing

Hear Loss- 2 Kinds

1. Conductive Hearing Loss 2. Sensorineural Hearing Loss-

3. Sense Three- Touch Premature Babies-

Monkeys-

4 Skin Receptors

Gate Control Theory-

Social Influence on Pain (Willing the pain to go away)

Memories and Pain

4/5. Sense 4 and 5- Taste and Smell

4 Taste Sensations

Taste and Smell

Smell receptors and process of smell

Smell and Emotion

Sensory Restriction