These tests that measure underlying ability and learning. Aptitude or specialized abilities. An aptitude is the ability to learn or to develop proficiency in an area (if provided with appropriate education or training). It is like talent. Examples are various types of reasoning, artistic ability, motor coordination, musical talent.
Muscle twitching, also known as muscle fasciculation, is marked by small muscle contractions in the body. Your muscles are composed of fibers, tissues, and nerves.When a nerve is stimulated or damaged, it may cause your muscle fibers to twitch. Many twitches experienced in your body are common and may go unnoticed.However, other types of twitching may be a sign of a nervous system condition and should be checked out by your doctor.hen a nerve is stimulated or damaged, it may cause your muscle fibers to twitch. Many twitches experienced in your body are common and may go unnoticed. However, other types of twitching may be a sign of a nervous system condition and should be checked out by your doctor.
Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not mean muscle shortening because muscle tension can be produced without changes in muscle length such as holding a heavy book or a dumbbell at the same position.