Exam 5: Sensation and Perception

When Peggy went to the baseball game she quickly separated the fans into the "home crowd" (wearing mostly red), and the "visitors" (wearing mostly blue), even though the fans were fairly evenly dispersed throughout the stadium.Peggy's perception of the crowd illustrates the Gestalt principle of:

When we enter a room without much light, our eyes undergo a process of ____________________, which is caused by a regeneration process in the rods and cones.

Currently, our perception of color can best be explained using:

In signal detection studies, ____________________ are cases in which a target stimulus was judged to be presented when it actually was not.

Cyril was sitting in the hallway outside his chemistry class.Some students said they thought they could smell smoke, but Cyril didn't smell anything unusual.When they all checked the lab to see if there were any problems, everything was fine and nothing was burning.Based on signal detection theory, the fact that Cyril didn't smell any smoke would be considered:

Sensory adaptation occurs for each of the senses except smell.

Dana sees no glowing embers when she looks directly at the fireplace, but when she looks a little to the side, she can see a dimly glowing spot.The best explanation for this is that:

The term used to describe distance cues that are obtained through comparing the differing views from each of our eyes is:

The trichromatic theory proposed by Young and Helmholtz suggests that when short-wavelength cones are strongly activated, people will perceive colors in the violet to blue range.

One of the key ideas behind the gate-control theory of pain is that:

Transduction refers to:

Svetlana is having trouble detecting sounds of a certain pitch.However, there is no damage to her basilar membrane.Her hearing problem is probably best explained by:

If a retinal cell has a center-surround receptive field, then that cell's rate of firing will increase the most when:

During a battle for his life, the soldier did not notice the cuts he received from the rocks, but when you fell while rollerblading and received similar injuries, you felt significant pain.This is best explained by:

The fact that most people perceive individual elements that are moving in the same direction as being part of a single group is consistent with the Gestalt law of:

After passing the optic chiasm, the majority of the neural impulses from the eyes travel directly to a major relay station in the midbrain called the superior colliculus.

The Gestalt law of good continuation states that lines that:

When you move from a brightly lit environment into a dark environment, such as a movie theater, it takes about 20-25 minutes for your eyes to completely adapt to the lower illumination.

Sensations are:

Psychologically, when the frequency of a sound varies we hear changes in pitch, which corresponds roughly to how high or low a tone sounds.