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GRE Psychology: Perception Sensation

Subjects : gre, psychology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Located in the back of the eye - receives light images from the lens. It is composed of about 30 million photoreceptor cells and of other cell layers that process information






2. After images are perceived because of fatigued receptors. Because our eyes have a partially oppositional system for seeing colors - such as red-green or black-white - once on side is overstimulated and fatigued - it can no longer respond and is overs






3. Ambiguous figures - such as the Rubin vase. They can be perceived as two different things depending on which part you see as the figure and which part you see as the background.






4. Is gained by features we are familiar with - such as two seemingly parallel lines that converge with distance






5. The chemical that aids the receptor cells in transduction






6. Is the tendency to make figures out of symmetrical images






7. How people perceive objects in the way that they are familiar with them - regardless of changes in the actual retinal image. A book - for example - is perceived as rectangular in shape no matter what angle it is seen from.






8. Where half of all fibers from the optic nerve of each eye cross over and join the optic nerve from the other eye. This insures input from each eye will be put together in a full picture in the brain.






9. Allows the eyes to see contrast and prevents repetitive information from being sent to the brain. Once the receptor cell is stimulated - the others nearby are inhibited.






10. The way that a single point of light viewed in darkness will appear to shake or move. the reason for this is the movement of our own eyes






11. Is the inability to recognize faces






12. 1. closure 2. Proximity 3. Continuation or good continuation 4. Symmetry 5. Constancy 6. Minimum principle






13. The optic nerve is made up of...






14. Refers to how we see texture or fine detail differently from different distances






15. Individuals are partly motivated by rewards and costs in detection. The interplay between response bias and stimulus intensity determines responses






16. Has monocular and binocular cues






17. Saying you detect a stimulus that is not there






18. Proposed the tri-color theory - research shows that the opponent-process theory seems to be at work in the Lateral geniculate body - research shows that the tri-color theory seems to be at work in the Retina






19. Involves both innate/sensory and is partially learned/conceptual






20. The center of the retina; has the greatest visual acuity






21. Knowing that an elephant is large no matter how it might appear






22. Rods and cones on the retina that are responsible for sensory transduction.






23. Best at seeing fine details






24. Takes place when receptors for a particular sense detect a stimulus.






25. Developed the visual cliff to study whether depth perception was innate






26. We see objects because of the light they reflect






27. Revolves around perception and asserts that people tend to see the world as comprised of organized wholes. The world is understood through top-down processing.






28. Allow the cornea to bend (accommodate) in order to focus an image of the outside world onto the retina






29. Is the tendency to see what is easiest or logical to see






30. How we organize or experience sensations






31. Has been explained as the increasing ability of a child to make finer discriminations among stimuli.






32. Defined the Just Noticeable Difference






33. The physical intensity of a sound wave largely determines loudness






34. The physical intensity of light






35. Also known as just noticeable difference. The minimum difference that must occur between two stimuli - in order for them to be perceived as having different intensities.






36. The part of the world that triggers a particular neuron






37. Gives us clues about how far away an object is if we know about how big the object should be






38. Asserts that perception is the sum total of sensory input. The world is understood through bottom-up processing






39. Applies to all senses but only to a limited range of intensities. The law states that a stimulus needs to be increased by a constant fraction of its original value in order to be noticeably different

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40. Objects that have been drawn and can be perceived but are geometrically impossible






41. Refers to the relationship between the meaningful part of a picture and the background






42. The tendency to perceive a smooth motion. This explains why motion is perceived when there is none - often by the use of flashing lights or rapidly shown still-fram pictures - such as in the perception of cartoons. This is apparent motion






43. Correctly sensing a stimulus






44. Rightly stating that no stimulus exists






45. Or overlap of objects shows which objects are closer






46. Factors into why we see what we expect to see






47. Is the upper limit above which the stimuli can no longer be perceived. -The highest pitch sound a human could hear






48. Is the minimum amount of stimuli that can be detected 50% of the time






49. Why do cones see better than rods?






50. Discovered that cells in the visual cortex were so complex and specialized that they respond to certain types of stimuli. For example - some cells only respond to vertical lines - whereas some respond to only right angles.