Chapter 3

Which of the following terms denotes a trick of perpetual consistencies in the eye?

A visual illusion

According to Weber's law, the absolute threshold for all senses is the same for everyone.

False

The loudness of a sound is expressed in __

Hertz (Hz)

Which of the following structure in the front of the eye dilates and constricts to determine how much light will be allowed to get into the eye?

Iris

The blind spot __

Is insensitive to visual stimulation

Which of the following is true about the absolute threshold?

It is determined by exposing individuals to progressively longer stimuli until the maximum stimuli the person can detect is found.

As we age and reach her late 30s to mid 40s, what structure in our eyes tend to have difficulty accommodating?

Lens

The __ conducts sensory input to the brain, where it is relayed to the visual area of the optical lobe.

Optic nerve

In the context of the human eye (as well a little kitties), the size of the ___ is sensitive emotions.

Pupil

Exposure to very loud sounds can lead to damage of the auditory nerve or hair cells, resulting in __

Sensorineural deafness

Visual stimuli can be flashed briefly, below or absolute threshold for conscious perception, to enable people to process them. This is an example of __

Subliminal stimulation

Silas has a cold which has caused him to have a stuffy nose. Besides not being able to smell, what other senses may be affected?

Taste

A person with normal color vision is labeled as __

Trichromat

Cochlear implants contain microphones that sends sound an electronic equipment that transmits sound past damaged hair cells to simulate the auditory nerve.

True

Visual acuity is highest when images are focused on the fovea because of the high concentration of __ in the region.

cones

If you were having trouble with balance, it would most likely be a problem with your __ system

vestibular

Which of the following senses is dominant in human beings?

vision

Your friend Adelina tells you that she is red green colorblind. This means that she sees things in __

All colors except either red or green

After moving to Nebraska, Bobby did not notice any distracting sound. As time passes she became more and more aware of cicadas in her backyard. What is this an example of?

Sensory (positive) adaptation

The difference between sensation and perception is that sensation, or the stimulation of our senses, is an automated process resulting from sources of energy (light and sound) or the presence of chemicals (as in taste and smell), while perception is an active process in which sensations are organized and interpreted to form an inner representation of the world.

True