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Chapter 8
| Term | Definition |
|---|---|
| Senstaion | What occurs when a stimulus activates a receptor |
| Perception | The organization of sensory information into meaningful experiences |
| Psychophysics | The study of the relationships between sensory experiences and the physical stimuli that cause them |
| absolute Threshold | The weakest amount of a stimulus that a person can detect half the time |
| Difference Threshold | The smallest change in a physical stimulus that can be detected between two stimuli |
| Weber's law | The principle that for any change in a stimulus to be detected, a constant proportion of that stimulus must be added or subtracted |
| Signal-detection theory | The study of people's tendencies to make correct judgements in detecting the presence of stimuli |
| Pupil | The opening in the iris that regulates the amount of light entering the eye |
| Lens | A flexible , elastic, transparent structure in the eye that changes its shape to focus light on the retina |
| Retine | The innermost coating of the back of the eye, containing the light-sensitive receptor cells |
| Optic nerve | The nerve that carries impulses from the retina to the brain |
| Binocular Fusion | The process of combing the images recieved from the two eyes into a single, fused image |
| Retinal Disparity | The differences between the images stimulating each eye |
| Auditory nerve | The nerve that carries impulses from the inner ear to the brain, resulting in the perception of sound |
| Vestibular System | Three semicircular canals that provide the sense of balance, located in the inner ear and connected to the brain by a nerve |
| Olfactory Nerve | The nerve that carries smell impulses from the nose to the brain |
| Kinesthesis | The sense of movement and body postion |
| Gestalt | The experience that come form organizing bits and pieces of information into meaningful wholes |
| Subliminal messages | Brief auditory or visual messages that are presented below the absolute threshold |
| Motion parallax | The apparent movement of stationary object relative to one another that occurs when the observer changes postion |
| Constancy | The tendency to perceive certain objects on the same way regardless of changing angle, distance, or lighting |
| Illusions | Perceptions that misrepresent physical stimuli |
| Extrasensory Perception (ESP) | An ability to gain information by some means other than the ordinary senses |
Created by:
Lizbeth23
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