Parker Is a Typical 7-Month-Old

question 127

Multiple Choice

Parker is a typical 7-month-old. In terms of locomotion, the best he is able to do is to

• A) creep.
• B) walk.
• C) sit alone.
• D) roll from back to front.

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Definitions:

Rods

Sensory receptors in the retina that detect light waves and transduce them into signals that are processed in the brain as vision. Rods respond best to low levels of illumination, and therefore they do not support color vision or seeing fine detail.

Transduction

The process of converting one form of energy into another. In sensory systems, it refers to the conversion of external stimuli into nerve signals.

Sensory Adaptation

The process by which sensory receptors become less responsive to constant stimuli, allowing individuals to ignore background levels of stimulation.

Absolute Threshold

The smallest level of stimulus that can be detected by a sense, such as the faintest sound that can be identified.