If the Visual System Did Not Detect Differences in the Wavelengths

question 348

Multiple Choice

If the visual system did not detect differences in the wavelengths of light, we would NOT:

• A) be able to detect differences in brightness.
• B) have depth perception.
• C) be able to detect differences in colour.
• D) be able to recognize objects using visual information.

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Definitions:

Light Entering

Refers to the process of light passing into the eye, pivotal for the process of vision.

Pupil

The opening in the center of the iris of the eye, which regulates the amount of light reaching the retina.

Cornea

The clear, dome-shaped front surface of the eye that acts as a window to allow light to enter the eye.

Just Noticeable Change

The minimal difference in stimulation that a person can detect 50% of the time, also known as the difference threshold.