Chapter 4: Sensation and Perception

Anotações:

• Information from our 5 senses. 

1. Visual System
   1. Lens

      Anotações:

      • Focuses light on retina
   2. Pupil

      Anotações:

      • regulates amount of light
   3. Retina

      Anotações:

      • sense organ for light
      1. Rods

         Anotações:

         • black and white
      2. Cones

         Anotações:

         • Color vision
   4. Brightness
   5. Color
   6. Saturation
2. Auditory system
   1. Vestibular system
   2. Semi-circular canals
   3. Loudness
   4. Pitch
   5. Timbre
3. Psycho Physics

   Anotações:

   • Sensation begins with a detectable stimulus 
   1. Thresholds

      Anotações:

      • The threshold is the minimum amount of change required to generate an action potential. 
      1. Fechner
      2. Absolute Threshold

         Anotações:

         • In neuroscience and psychophysics, an absolute threshold was originally defined as the lowest level of a stimulus —light, sound, touch, etc.—that an organism could detect.
   2. JND

      Anotações:

      • Just Noticeable Difference (JND) is a sensory environment for one person at a time lying in total darkness. The installation is based on Gustav Fechner's concept of the just noticeable difference: the ability to perceptually detect the smallest changes in sensory stimuli.
      1. Weber
4. Taste
   1. Sweet
   2. Sour
   3. Bitter
   4. Salty
   5. Umami
5. Smell
   1. Olfactory
   2. Pheromones
6. Touch
   1. Pressure
   2. Pain
   3. temperature
   4. Kinesthetic

Anotações:

• Making sense of what we perceive. 

1. Feature Analysis
   1. Bottom-Up

      Anotações:

      • Believe what we see
   2. Top-Down

      Anotações:

      • See what we believe
   3. Ames Room
   4. Gestalt Form Perception
2. Perception of Vision
   1. Trichromatic

      Anotações:

      • Eye has three types of receptors pairings of the same three colors: green, blue, and red. 
   2. Operant process

      Anotações:

      • receptors act opposite Green, blue, and red. 
   3. Optical illusion
   4. Occipital Lobe