I need this assignment tommorow.

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CHAPTER 3: SENSATION AND PERCEPTION

Funnel and bottle-neck

Bottom-up and Top-down (p. 127)

Objective and Subjective

Sensation: (funnel, bottom-up, objective) p. 127

(follow lecture closely as text describes detection-stage one-only)

1. Detect—PNS to CNS: happens with sensory receptors and absolute thresholds

2. Encode—CNS: brain’s analysis of detected data:

(cerebral cortex primary; know the lobes)

3. Signal—CNS to PNS: action needed? Signal sent or sensory adaptation?

p.109

Vision: occipital lobe primary pp. 112-121 and p. 74

Eye parts, function

Retina (fovea located in retina) has three types of receptors: rods, cones, and intrinsically photosensitive retinal ganglion cells (ipRGCs)

Retina/Fovea discerns three colors: blue, green, red (infants cannot see blue until about two months of age)

Trichromatic theory and color blindness

Parallel Processing—color, motion, form, depth

Eyes are the easiest sense to fool (change blindness) p. 295

Hearing: temporal lobe primary pp. 121-123 and p. 74

Ear areas and function

Taste: parietal lobe primary

Taste buds

Chemical sense

Taste preference: nature, nurture, and the individual

Smell: parietal lobe primary

Chemical sense

Soma senses or Somesthetic senses pp. 72-73

Touch: parietal lobe primary

Pain receptors

Pressure

Heat

Cold

Kinesthetic and Vestibular

Synesthesia pp. 75-76

Perception: (bottle neck, top down, subjective) p. 127

(book does not review process of perception; it reviews the outcomes of perception)

“the further processing of sensory information”

1. Select—CNS: not all sensory information is selected for perceptual processing, selection is often based on uniqueness and past experience

2. Organize—CNS: past, present, future integration in opinion, experience (association)

3. Interpret—CNS: final opinion, decision, understanding, etc.