Chapter 4 Test: Part I
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30 terms
Terms | Definitions |
|---|---|
 Sensation | How you detect energy from physical stimuli around you. |
| Perception | How someone interprets sensation. |
| Visual Sense | The ability to see. |
| Stimulus | Something external that influences an activity. |
| Visual Spectrum | The light our eyes are able to interpret. |
| Wavelength | The length of a wave. |
| Amplitude | The height of a wave. |
| Cornea | A clear coating that is the outer cover of the eye, it is also in charge of keeping the eye together. |
| Iris | The colored portion of your eye, which regulates how much light hits the back of the retina. |
| Pupil | A hole in which light enters. |
| Vitreous Pathway | Fluid that fills the inside of the eyeball. This fluid also allows light waves to come in and it directs them toward the back of the eye. |
| Lens | Allows the eye to focus. |
| Lens Accommodation | The way the lens changes to allow the owner to see. |
| Aqueous Humor | The fluid behind the lens that shapes it. |
| Ciliary Muscles | Little Fibers that pull the lens to change their shape. |
| Retina | The inner lining of the back of the eyeball; contains rods and cones. |
| Rods | Receptors in the back of the eye that allows you to have vision, they also allow basic vision and peripheral vision at night. |
| Cones | Receptors that allow you to see color, daylight, and details. These receptors are much more sensitive to light than rods. |
| Optic Nerves | Connects your eye to the brain. |
| Optic Disk | The blind spot in the eye, it connects the optic nerves to the eyes. |
| Optic Chiasm | The optic nerve crosses this point and goes to both eyes. |
| Bipolar Cells | Transmits messages between the rods, cones and ganglion cells. |
| Ganglion Cells | Neurons that form the optic nerves, they connect the optic nerve to the back of the retina. |
| Color Vision | The way people perceive color. |
| Trichromatic Color Theory | The theory that our retina contains 3 colors red, green, blue. |
| Color Blindness | Term for a person who cannot decipher between red and green. |
| Opponent Process Theory | When you look at one thing and the opposite will fire off. It creates an after image. |
| Outer Ear | Pinna ridges that direct sound into the ear are part of this auditory pathway. |
| Ear Drum | Transmits sounds to vibrations. |
| Ossicles | The term for 3 bones which vibrate when hit allowing the sound to continue, it transmits the vibrations to the oval window. |
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