_____ is due to the lack of functioning cones.

_____ occurs as the eye recovers its ability to see when going from a brightly lit state to a dark state.

Which of statements is true about the lens?

Sound wavelengths are interpreted by the brain as

Wever and Bray theorized that groups of auditory neurons take turns firing in a process called

Normal aging causes loss of hair cells in the

Which of the following sounds is least likely to be interpreted by the brain as a high pitch?

Which mammals have the ability to hear frequencies up to 200,000 Hz?