| A | B |
|---|
| Rod | A visual receptor most sensitive to the violet-purple wave lengths; very sensitive for night vision; "sees" only black and white |
| White Light | Light as it originates from the sun or a bulb before its broken into different frequencies |
| Lens | The part of the eye that focuses an object on the back of the eye |
| Retina | The back of the eye, which contains millions of receptors for light. |
| Pitch | How high or low a sound is |
| Auditory Nerves | A bundle of nerves carrying sound to the brain |
| Eardrum | A piece of skin stretched over the entrance of the ear, vibrates to sound |
| Cilia | Tiny hair-like projections that recieve odor molecules. Some act as receptors in the nose |
| Taste Receptors | Chemical receptors on the tongue that decode molecules of food or drink to identify them. |
| Color Constancy | The ability to percieve an object as the same color regardless of the environment |
| Texture Gradient | The amount of detail we can percive in objects we are viewing |
| Depth Perception | The ability to see objects in space |
| Closure | The process of filling in the missing details of what is viewed |
| Adaptation | The ability to ignore certain stimuli while focusing on those that are important |
| Reversible Figure | An illusion in which the same object is seen as two alternate figures-first one than the other |
| Perception | The process of assembling and organizing sensory information to make it meaningfull |
| Cone | A visual receptor that responds during daylight; recieves color |
| Olifaction | the sense of smell. |
| Audition | the sense of hearing |
| Decibel | Ameasure of how loud a sound is |
| Olifactory Bulbs | Units that recieve odor molecules and communication their nature to the brain |
| Similarity | A perceptual cue in which we group like things together |
| Brightness Constancy | By taking an average the humans visual network keeps brightness constant as an object is moved to various environments |
| MUller-Lyer illusion | Two pictures in which one liine seems longer tan the other but really isn't |
| Subliminal Perception | Stimulation presented below the level of consciousness |
| Visual Cliff | A large table with plexiglas, used to demonstrate depth perception in small children |
| Pheromones | Odor chemicals that communicate a message |
| Gestalt | An organized whole, shape or form |
| Timbre | The complexity of a sound |
| Cutaneous receptors | The nerve receptors in the skin that respond to pressure, temperature or pain |
| Cilia | Receptor cells for hearing and sense of smell; found in the cochlea and the nasal cavity |
| Illusion | An innacurate perception |
| Size Constancy | The ability to retain the size of an object regardless of where it is located |
| Space Constancy | The ability to keep objects in the environment steady |
| Sensation | The process of recieving information from the environment |
| Pupil | opening in the eye |
| After Image | The firing of the cones not used after viewing something steadily in order to bring the visual system back in balance. |
| Intensity | how loud a sound is. |
| Cochlea | A snail shaped part of the ear, filled with fluid and small hairs that vibrate to incoming sound. |
| Binocular disparity | The difference between the image provided by each eye. |
| Cornea | Clear outer covering of the eye behind which is a fluid. |
| Blind Spot | The portion of the retina through which the optic nerve exits and where there are no receptors for light waves. |
| Iris | A colored circular muscle that opens and closes, forming larger and smaller circles to control the amount of light getting into the eye. |
| Color blindness | Inability to perceive certain colors, such as red and green. |
