Exam 3: Sensation and Perception
What are the three somesthetic senses and what does each one do?
The three somesthetic senses are touch, proprioception, and nociception.
1. Touch: This sense allows us to perceive pressure, vibration, and temperature on the skin. It helps us to feel objects and textures, as well as to sense pain and temperature changes.
2. Proprioception: This sense provides us with information about the position and movement of our body in space. It allows us to have a sense of where our limbs are without having to look at them, and helps us to maintain balance and coordination.
3. Nociception: This sense is responsible for detecting and perceiving pain. It alerts us to potential tissue damage and helps us to avoid harmful stimuli. Nociceptors are specialized sensory receptors that respond to potentially damaging stimuli by sending signals to the brain.
The pitch of a sound (from a low bass to a high shriek) is related to the amplitude of the sound waves that reach the eardrum.
False
In the process known as __________, sensory receptors become less sensitive to repeated presentations of the same stimulus.
C
The tendency to interpret an object as always having the same physical dimensions, regardless of its distance from the viewer, is known as __________ constancy.
Freya is painting while the sun is setting; once she notices that the room is getting darker, she decides to call it quits for the day. This example illustrates the role of a(n) __________.
The smallest change in stimulation that can be detected 50 percent of the time is called the __________ threshold.
Ethan has suffered minor damage to the bones in his left middle ear. What treatment, if any, might help restore his hearing?
Fluid located in the cochlea is set in motion and causes vibration in the __________.
The shortest wavelengths that we can see are experienced as __________ colors.
The colored part of the eye that contains muscles to contract or expand the pupil is the __________.
Briefly explain the concept of the just noticeable difference.
You are drinking a strong cup of coffee that is particularly bitter. After a while, the coffee doesn't taste as strong as it did when you first tasted it. What has happened?
The idea that large fibers in the sensory nerves can prevent impulses from reaching the brain and thus prevent the sensation of pain is part of the __________ theory of pain.
Texture gradient refers to the fact that texture appears to become __________.
Which of the following properties of sound is the most similar to the color, or hue, of light?
What are the three primary colors as proposed by the trichromatic theory?
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