psc 2 exam 2

psc 2 exam 2 - Sensation and perception 1 How do we measure...

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Sensation and perception 1. How do we measure sensory experience? What is the absolute threshold? - using Psychophysics (link between physical stimuli and subjective sensation) - absolute threshold: the minimum level of stimulation that can be detected 2. What is signal detection theory? - one is to detect a true/false stimulus and report it (true/false alarm) 3. Is pain adaptive? - yes 4. What is the gate-control theory of pain? - factors that affect the perception of pain and the pain isn’t perceived as strong 5. Describe the major structures of the human eye: cornea, iris, pupil, lens, retina. - cornea: focus the lens - iris: controls how much light go into the eye - pupil: opening in the center of the iris that allows light goes in - lens: refract light to be focused on the retina - retina: responds to light by relaying the image to other neurons 6. What are the three layers of cells in the retina and what are their functions? - ganglion cell layer: transmit visual info to the brain - bipolar cells: transmit signals from photo receptor to ganglion cells - photoreceptor: contains rods and cones Photoreceptor bipolar ganglion 7. What are rods? What are cones? Where are they primarily located? - rods: important for motion (retina) - cones: responsible for seeing color (retina) 8. What is the optic chiasm? - the point where images from left and right eyes cross over 9. What is the Ames room? - spatial perception 10. What is change blindness? (remember the video) - focusing on something so much that don’t notice sth has changed 11. What are some of the major Gestalt organizational principles discussed in class? Figure and ground? Grouping? - the whole is greater than some of its parts (triangle = 3 lines, yet we say it’s a triangle) - size consistency: we recognize size despite distance Learning 1. Who was Pavlov and why were his studies so important? - Pavlov: Russian, started the behaviorism, classical condition
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2. What is classical conditioning? - unconditioned stimulus (food) and unconditioned response (saliva) conditioned stimulus (bell) and conditioned response (saliva) 3. Define and give examples of the following: Unconditioned stimulus, unconditioned response, conditioned stimulus, conditioned response. - US: unlearned, leads to natural response - UR: uncontrolled response - CS : was natural, paired with unconditioned stimulus - CR: response to a conditioned response 4. What is extinction? - extinction: disassociation of conditioned response and conditioned stimulus (if no reward/punishment given, action is forgotten) 5. What is stimulus generalization? What is stimulus discrimination? -
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psc 2 exam 2 - Sensation and perception 1 How do we measure...

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