| A | B |
| Stimulus | Detectable input from the environment |
| Sensation | the process by which we receive information from the environment |
| Perception | the interpretation of the info we recieve from the environment |
| Adaptation | a decline in response to a stimulus after repeated presentation |
| Absolute Threshold | the point at which a stimulus can be deteceted 50% of the time |
| Bottom-up Processing | identify a stimulus by analyzing new info |
| Top-down Processing | identify a stimulus by using prior knowledge |
| Vision | One of the five senses |