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GRE Psychology: Perception Sensation

Subjects : gre, psychology
  • Answer 50 questions in 15 minutes.
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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. 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.

2. 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.

3. The chemical that aids the receptor cells in transduction

4. The eyes are connected to the cerebral cortex by...

5. The clear protective coating on the outside of the eye

6. Is the inability to recognize faces

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

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

9. How movement is perceived though the displacement of objects over time - and how this motion takes place at seemingly different paces for nearby or faraway objects. Ships far away seem to move more slowly than ships moving at the same speed.

10. Is the way that perceived color brightness changes with the level of illumination in the room. With lower levels of illumination - the extremes of the color spectrum (especially red) are seen as less bright

11. Famous for the theory of color blindness

12. Electrical impulses travel down these to the brain - where the information is understood

13. It travels through the horizontal cells to the bipolar cells to the amacrine cells. Finally the information heads to the ganglion cells.

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

15. After the optic chasm - information travels to the...

16. 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

17. Defined the Just Noticeable Difference

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

19. 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

20. Failing to detect a present stimulus

21. 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

22. humans best hear at

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

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

25. 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.

26. Along the visual pathway is the...

27. The physical intensity of light

28. Or overlap of objects shows which objects are closer

29. Has been called the most important depth cue. Our eyes view objects from two slightly different angles - which allows us to create a 3-dimensional figure

30. Located by the cornea

31. The overarching Gestalt idea that experience will be organized as meaningful - symmetrical - and simple whenever possible.

32. Consists of the parts you see called the pinna and the auditory canal. Vibrations from sound move down this canal to the middle ear.

33. Consists of the bony labyrinth - a hollow cavity in the temporal bone of the skull with a system of passages comprising two main functional parts: The cochlea - dedicated to hearing; converting sound pressure patterns from the outer ear into electroc

34. Is the tendency to complete incomplete figures

35. We see objects because of the light they reflect

36. 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

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

38. 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.

39. 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.

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

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

42. Comes from the complexity of the sound wave

43. Suggests that subjects detect stimuli not only because they can but also because they want to. TSD factors motivation into the picture.

44. Is knowing the color of an object even with tinted glasses on

45. A thick layer of glass above a surface that dropped off sharply. The glass provided solid - level ground doe subjects to move across in spite of the cliff below. Animals and babies were used as subjects and both groups avoided moving into the 'cliff'

46. Has monocular and binocular cues

47. Can be perceived as two different things depending on how you look at them

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

49. Begins with the tympanic membrane (eardrum) which is stretch across the auditory canal. Behind this membrane are the Ossicles (3 small bones) - the last of which is the stapes. Sound vibrations bump against the tympanic membrane - causing the ossicl

50. Consists of one optic nerve connection each eye to the brain.