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Updated: Aug 9, 2026
A Battery of Motor Tests in a Neonatal Mouse Model of Cerebral Palsy
Published on: November 3, 2016
["Liberated" motricity by holding the head during the first weeks of life (author's transl)]
Insights
Holding an infant's head steady for 30 minutes can induce "liberated" motricity, likely from the cortex. This finding offers a new perspective on normal neonatal motor development in infants under 8 weeks old.
Area of Science:
- Neonatal development
- Neuroscience
- Pediatrics
Context:
- Neonatal motricity is often characterized by head instability.
- Previous research has not extensively explored induced motor patterns in neonates.
- Understanding typical motor development is crucial for identifying potential neurological issues.
Purpose:
- To investigate the effects of sustained head support on neonatal motor behavior.
- To characterize the phenomenon of "liberated" motricity in infants.
- To explore a novel method for observing neonatal motor patterns.
Summary:
- A study examined 246 infants under 8 weeks old, supporting their heads for 30 minutes to maintain alertness.
- In 97% of cases, reflex motricity subsided, revealing "liberated" motricity.
- Observed behaviors included enhanced communication, trunk straightening, limb quieting, and interactive play with toys.
Impact:
- Provides a new perspective on the normality of neonatal motricity.
- Suggests a potential method for assessing cortical influence on infant movement.
- Highlights the importance of controlled observation in understanding infant development.
- Current findings are preliminary for detecting brain damage, requiring further clinical research.
Abstract:
The instability of the head disturbs neonatal motricity. However, when the head is held during a long period of observation (30 minutes) a motricity called "liberated" motricity, probably cortical in origin can be induced. 246 children, less than 8 weeks of age, have been examined while they were sitting on a bench and while their attention was kept in alert by the examinator who was holding their heads. In 97% of cases, the reflex motricity calms down and the following signs can be observed: (a) a stage of intense communication with the examinator, (b) then, the trunk straights up and the limbs become quiet and make movements which recall those of an older infant (43,5%), at least, there is a real interest for a toy, either looked at without gestures (39%), or touched and taken in an intentional way (19%). The theorical interest of this study is to get a new aspect of the normality of neonatal motricity. The clinical knowledge is still too recent to help detecting brain damage.
