Startled reflex This is sometimes referred to as the startle reaction, startle response, startle reflex or embrace reflex. It is more commonly known as the Moro response or Moro reflex after its discoverer, pediatrician Ernst Moro. The Moro reflex is present at birth, peaks in the first month of life, and begins to disappear around 2 months of age.

Grasping reflex The palmar grasp reflex appears at birth and persists until five or six months of age. When an object is placed in the infant's hand and strokes their palm, the fingers will close and they will grasp it with a palmar grasp. The grip is strong but unpredictable; though it may be able to support the child's weight, they may also release their grip suddenly and without warning. The reverse motion can be induced by stroking the back or side of the hand.

Open mouth The Babkin reflex occurs in newborn babies, and describes varying responses to the application of pressure to both palms. Infants may display head flexion, head rotation, opening of the mouth, or a combination of these responses.[14] Smaller, premature infants are more susceptible to the reflex, with an observed occurrence in a child of 26 weeks gestation.[15] It is named after the Russian neurologist Boris Babkin.

Reflex A reflex action, differently known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus.

Instinct Instinct or innate behavior is the inherent inclination of a living organism towards a particular complex behavior.