In terms of object recognition, the simplest patterns of lines are gratings, which can vary in two dimensions Frequency and contrast
<h3>
What is Frequency?</h3>
- The frequency of a repeated event is its number of instances per unit of time. In some cases, it is also referred to as temporal frequency or ordinary frequency to underline differences with spatial and angular frequencies, respectively.
- One (event) per second is equal to one hertz (Hz), which is how frequency is stated. The period is the reciprocal of the frequency since it is the length of time for one cycle in a repeating occurrence.
- For instance, the period, T—the space between beats—of a heart beating at a frequency of 120 beats per minute (2 hertz), is equal to 0.5 seconds (60 seconds divided by 120 beats).
To learn more about Frequency with the given link
brainly.com/question/5102661
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I'm pretty certain A is correct
Answer:
Spinal cord
Explanation:
Central nervous system consists of two parts Brain and Spinal cord.
Brain control major body function like sensation, movement, memory.
spinal cord collects information from body sends it to brain and then get information from brain and send it to whole body
