Sensation and Perception Chapter 5

Sensation v. Perception Brain (physical organ) Mind ( )

Absolute Thresholds Do you think you could sense: A of perfume in a 3 room apartment?

Absolute Threshold Subliminal Stimulation

Just Noticeable Difference Difference Threshold Described by Light must vary by % must vary by % Sound must vary by %

Sensory Adaptation Increases sensitivity to most important information

How It Works: Vision Light enters the Light then passes through the Passes through the pupil/iris Light then passes through the Finally falls on the

How It Works: Vision Retina detects Brightness/Intensity Motion

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How It Works: Vision Blind Spot Rods / Cones

How It Works: Vision Hubel / Weisel – Facial Perception

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How It Works: Vision Processing Milner’s Study

How It Works: Vision Color Vision

How It Works: Vision Theory Hering – Theory Does not fully explain color vision Hering – Theory

How It Works: Hearing Outer Ear Middle Ear Inner Ear

How It Works: Touch Pain Phantom Limb

Pain Locatable area of the brain that ‘senses’ pain Theory Shows similar response to Theory Memory of Pain

Pain Control Psychological Controls Physical Controls Placebo (no drug) Exercise Thought Distraction Drugs Massage Acupuncture Surgery

Taste Attraction/Avoidance Have basic tastes

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Scent Sense of smell of all likely to trigger memory

Ability to determine movement/location of limb/joint Works with other senses to determine bodies position in space

Vestibular Sense Inner ear Responsible for location of

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Depth Perception Visual Cliff Two Ways to Depth Perception Monocular Cues Binocular Cues

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Perceptual Interpretation Differences in perception are learned Critical period for normal sight Perceptual adaptation