Question

use the following terms to answer #s 1 - 6: absolute threshold, adaptation, perception, receptors, stimulus. 1. any aspect of or change in the environment to which an organism responds is called a __ 2. a sensation occurs any time a stimulus activates one of your 3. a sensation may be combined with other sensations or your past to yield a 4. the weakest amount of a stimulus required to produce a sensation is the 5. are most responsive to increases and decreases and new events rather than ongoing, unchanging stimulation. 6. without sensory __, you would feel the constant pressure of the clothes on your body 7. how do sensory receptors make it possible for you to perceive external stimuli? 8. what are the differences between rods and cones? 9. why does a pea look green?

Explanation:

1. By definition, a stimulus is any aspect of or change in the environment to which an organism responds.
2. Sensory receptors are activated by stimuli to create a sensation.
3. Perception is formed when a sensation is combined with other sensations or past - experiences.
4. The absolute threshold is the weakest amount of a stimulus required to produce a sensation.
5. Receptors are more responsive to changes and new events.
6. Sensory adaptation allows us to become less aware of constant, unchanging stimuli like the pressure of clothes on our body.
7. Sensory receptors convert external stimuli into neural signals that the brain can interpret as perceptions.
8. Rods are more sensitive to low - light and are responsible for black - and - white vision, while cones are responsible for color vision and function best in bright light.
9. A pea looks green because it reflects green light and absorbs other wavelengths of light.

Answer:

1. stimulus
2. receptors
3. perception
4. absolute threshold
5. receptors
6. adaptation
7. Sensory receptors convert external stimuli into neural signals that the brain can interpret as perceptions.
8. Rods are more sensitive to low - light and are responsible for black - and - white vision, while cones are responsible for color vision and function best in bright light.
9. A pea looks green because it reflects green light and absorbs other wavelengths of light.