What is moro reflex , when it diseppears ?

Moro reflex is one of the simple reflexes that can be made by the examiner or by the mother , the question here is what positive or negative moro reflex means , how it is done ? . First I will begin with the stimulus ( action made stimulate the appearance of moro reflex in the child . 

Stimulus in moro reflex : 

1- Dropping the head with the examiner's hand supporting the body of the baby , which is the stimulus used in the video . 

2- Making a loud noise near the infant's ear . 

3- Sudden drop of the blanket from underneath the infant . 

 

Positive response : 

It is response made indicating healthy child , the baby will extend the forearm and abduct the arms and extend its trunk , this is followed by flexion and adduction of the upper limb . All these actions are done when the hands and the fingers are widely opened and a cry follow these movements . 

Clinical significance : 

This indicates normal CNS development , its absence indicates serious CNS affection as cerebral injury . Normally this reflex is present till the 6th month and its persistence indicates mental retardation .