UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Postnatal development of the cutaneous flexor reflex: comparative study of preterm infants and newborn rat pups.

Fitzgerald, M; Shaw, A; MacIntosh, N; (1988) Postnatal development of the cutaneous flexor reflex: comparative study of preterm infants and newborn rat pups. Dev Med Child Neurol , 30 (4) pp. 520-526.

Full text not available from this repository.

Abstract

Cutaneous flexor reflex thresholds have been used as a measure of somatosensory function: the authors measured threshold in preterm infants and newborn rat pups. Preterm infants of less than 30 weeks postconceptional age (PCA) had very low thresholds of less than 1.0 g, but by 37.5+ weeks PCA thresholds were equivalent to those in normal term babies, although these are still well below adult levels. Newborn rat pups also have very low flexor reflex thresholds, which do not approach adult levels until four postnatal weeks. Repeated stimulation of the foot in preterm babies resulted in sensitization of the flexion reflex up to about 32 weeks PCA. After that age repeated stimulation resulted in habituation, as is observed in the adult. Sensitization also occurred in newborn rat pups, which changed at four postnatal weeks to habituation. The results demonstrate the sensitivity of spinal reflexes to cutaneous inputs in the neonate and it is argued that this results from lack of inhibitory control in the immature spinal cord.

Type: Article
Title: Postnatal development of the cutaneous flexor reflex: comparative study of preterm infants and newborn rat pups.
Location: England
Keywords: Animals, Animals, Newborn, Child Development, Female, Habituation, Psychophysiologic, Humans, Infant, Newborn, Infant, Premature, Male, Mechanoreceptors, Motor Neurons, Neural Pathways, Nociceptors, Rats, Reflex, Sensory Thresholds, Skin, Spinal Cord
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Neuro, Physiology and Pharmacology
URI: http://discovery.ucl.ac.uk/id/eprint/121658
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item