The flexion withdrawal reflex increases in premature infants at 22-26 weeks of gestation due to changes in spinal cord excitability.
Kyriakos MartakisChristoph HünselerPeter HerkenrathKruthika ThangaveluAngela KribsBernhard RothPublished in: Acta paediatrica (Oslo, Norway : 1992) (2017)
The flexion withdrawal reflex among premature infants born at less than 26 weeks showed a continuous threshold increase with increasing postnatal age, reflecting changes in spinal cord excitability.