Examlex
No serious political candidate can be without an internet presence, including Facebook and a webpage.
Absolute Threshold
The lowest level of stimulation that an organism can detect at least 50% of the time.
Attention
The process of sorting through sensations and selecting some of them for further processing.
Difference Threshold
The smallest difference in stimulus intensity required to detect a difference between two stimuli, also known as the just noticeable difference (JND).
Cornea
The tough, transparent, protective layer that covers the front of the eye and bends light rays inward through the pupil.
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