Exam 3: Sensation and Perception

Explain the processes involved in light and dark adaptation. Also, describe the process by which an afterimage is created.

The minimum intensity of physical stimulation required to produce any sensation at all in a person is the ________ threshold.

Hearing begins when sound waves stimulate the ________.

Laverne goes into a movie theater to watch her favorite movie. About halfway through the movie she becomes aware of an overpowering hunger for popcorn. What she doesn't realize is that throughout the first part of the movie, a message saying "Eat Popcorn!" was repeatedly flashed on the screen at a speed too fast for her to be consciously aware of it. If her desire for popcorn is due to that message, she is responding to ________.

According to McBurney and Collings, the average threshold for human smell is one drop of perfume diffused through a ________ room apartment.

Each retina of the eye has about ________ million rods and cones.

People can feel pain even when they have not suffered any physical harm.

The place theory and the frequency theory attempt to explain ________.

The transparent part of the eye inside the pupil that focuses light onto the retina is the ________.

The apparent motion created by a rapid series of images of stationary objects is called the autokinetic illusion.

The flavor of a food is a complex combination of taste and smell.

Texture gradients, shadowing, and motion parallax are all types of monaural cues.

The idea that certain areas of the brainstem can send out signals to fibers connected to the spinal cord and effectively block pain is part of the ________ theory of pain.

Recent research indicates that endorphin release ________.

The ability of the eye to distinguish fine details is called ________.

According to McBurney and Collings, the average threshold for human hearing is the tick of a watch from ________ feet in very quiet conditions.

Your threshold for vision is higher on a sunny day than on a dark, moonless night. This is because of ________.

If you place a stick in the water, the part of the stick that is under the water appears bent. This is an example of ________.

Rods and cones are connected to ________.

You are watching a tennis match and your seat is located at the side of the court, in line with the net. If you keep your eyes on the net but move your head from side to side, the people on the other side of the court will appear to ________.