Long-range temporal organisation of limb movement kinematics in human neonates
Objective: Movement provides crucial sensorimotor information to the developing brain, evoking somatotopic cortical EEG activity. Indeed, temporal-spatial organisation of these movements, including a diverse repertoire of accelerations and limb combinations (e.g. unilateral progressing to bilateral)...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Clinical Neurophysiology Practice |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2467981X20300275 |
| _version_ | 1818392684057853952 |
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| author | Kimberley Whitehead Judith Meek Lorenzo Fabrizi Beth A. Smith |
| author_facet | Kimberley Whitehead Judith Meek Lorenzo Fabrizi Beth A. Smith |
| author_sort | Kimberley Whitehead |
| collection | DOAJ |
| description | Objective: Movement provides crucial sensorimotor information to the developing brain, evoking somatotopic cortical EEG activity. Indeed, temporal-spatial organisation of these movements, including a diverse repertoire of accelerations and limb combinations (e.g. unilateral progressing to bilateral), predicts positive sensorimotor outcomes. However, in current clinical practice, movements in human neonates are qualitatively characterised only during brief periods (a few minutes) of wakefulness, meaning that the vast majority of sensorimotor experience remains unsampled. Here our objective was to quantitatively characterise the long-range temporal organisation of the full repertoire of newborn movements, over multi-hour recordings. Methods: We monitored motor activity across 2–4 h in 11 healthy newborn infants (median 1 day old), who wore limb sensors containing synchronised tri-axial accelerometers and gyroscopes. Movements were identified using acceleration and angular velocity, and their organisation across the recording was characterised using cluster analysis and spectral estimation. Results: Movement occurrence was periodic, with a 1-hour cycle. Peaks in movement occurrence were associated with higher acceleration, and a higher proportion of movements being bilateral. Conclusions: Neonatal movement occurrence is cyclical, with periods consistent with sleep-wake behavioural architecture. Movement kinematics are organised by these fluctuations in movement occurrence. Recordings that exceed 1-hour are necessary to capture the long-range temporal organisation of the full repertoire of newborn limb movements. Significance: Future work should investigate the prognostic value of combining these movement recordings with synchronised EEG, in at-risk infants. |
| first_indexed | 2024-12-14T05:33:19Z |
| format | Article |
| id | doaj.art-60115f86223543f8abb8a8776682f4e2 |
| institution | Directory Open Access Journal |
| issn | 2467-981X |
| language | English |
| last_indexed | 2024-12-14T05:33:19Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Clinical Neurophysiology Practice |
| spelling | doaj.art-60115f86223543f8abb8a8776682f4e22022-12-21T23:15:16ZengElsevierClinical Neurophysiology Practice2467-981X2020-01-015194198Long-range temporal organisation of limb movement kinematics in human neonatesKimberley Whitehead0Judith Meek1Lorenzo Fabrizi2Beth A. Smith3Department of Neuroscience, Physiology and Pharmacology, University College London, London WC1E 6BT, United Kingdom; Corresponding author at: G17 Medawar Building, University College London, Gower Street, London WC1E 6BT, United Kingdom.Elizabeth Garrett Anderson Wing, University College London Hospitals, London WC1E 6DB, United KingdomDepartment of Neuroscience, Physiology and Pharmacology, University College London, London WC1E 6BT, United KingdomDivision of Biokinesiology and Physical Therapy and Department of Pediatrics, University of Southern California, Los Angeles, CA 90033, United StatesObjective: Movement provides crucial sensorimotor information to the developing brain, evoking somatotopic cortical EEG activity. Indeed, temporal-spatial organisation of these movements, including a diverse repertoire of accelerations and limb combinations (e.g. unilateral progressing to bilateral), predicts positive sensorimotor outcomes. However, in current clinical practice, movements in human neonates are qualitatively characterised only during brief periods (a few minutes) of wakefulness, meaning that the vast majority of sensorimotor experience remains unsampled. Here our objective was to quantitatively characterise the long-range temporal organisation of the full repertoire of newborn movements, over multi-hour recordings. Methods: We monitored motor activity across 2–4 h in 11 healthy newborn infants (median 1 day old), who wore limb sensors containing synchronised tri-axial accelerometers and gyroscopes. Movements were identified using acceleration and angular velocity, and their organisation across the recording was characterised using cluster analysis and spectral estimation. Results: Movement occurrence was periodic, with a 1-hour cycle. Peaks in movement occurrence were associated with higher acceleration, and a higher proportion of movements being bilateral. Conclusions: Neonatal movement occurrence is cyclical, with periods consistent with sleep-wake behavioural architecture. Movement kinematics are organised by these fluctuations in movement occurrence. Recordings that exceed 1-hour are necessary to capture the long-range temporal organisation of the full repertoire of newborn limb movements. Significance: Future work should investigate the prognostic value of combining these movement recordings with synchronised EEG, in at-risk infants.http://www.sciencedirect.com/science/article/pii/S2467981X20300275MotorSomatosensoryProprioception |
| spellingShingle | Kimberley Whitehead Judith Meek Lorenzo Fabrizi Beth A. Smith Long-range temporal organisation of limb movement kinematics in human neonates Clinical Neurophysiology Practice Motor Somatosensory Proprioception |
| title | Long-range temporal organisation of limb movement kinematics in human neonates |
| title_full | Long-range temporal organisation of limb movement kinematics in human neonates |
| title_fullStr | Long-range temporal organisation of limb movement kinematics in human neonates |
| title_full_unstemmed | Long-range temporal organisation of limb movement kinematics in human neonates |
| title_short | Long-range temporal organisation of limb movement kinematics in human neonates |
| title_sort | long range temporal organisation of limb movement kinematics in human neonates |
| topic | Motor Somatosensory Proprioception |
| url | http://www.sciencedirect.com/science/article/pii/S2467981X20300275 |
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