| A | B |
| Sensation | The nervous system's registering some external or internal stimulus...not necessarily consciously perceived. |
| Perceived Sensation | One that you notice, one that you feel. |
| Components of a Sensation | Stimulus, receptor, sensory neuton, and integration center. |
| Projection | Process by which the apparent origin of a stimulus is determined. |
| Adaption | Process by which the perception of a sensation stops, even though the stimulus is still there. |
| After-image | Perception continues, even though the stimulus has stopped. |
| Modality | The specific identity of the stimulus (sight, hearing, taste, pain, etc.) |
| Somatic Sensations | Pain, touch, heat, pressure, cold, vibration, and proprioception. |
| Somatic Senses | Receptors for these senses are fairly simple in structure and are distirbuted more-or-less throughout the body. |
| Special Senses | Receptors for these senses are complex and are restricted to special regions/organs of the body. |
| Special Sensations | Sight, smell, taste, hearing, and equilibrium. |
| Exteroceptors | Located near the exterior, receive external stimuli. |
| Visceroreceptors | Located in viscera and blood vessels, receive internal stimuli |
| Proprioceptors | Located in muscles, tendon, joints, and in the internal ear. Sense postion. |