scholarly journals Head movement assessment of cerebral palsy users with severe motor disorders when they control a computer thought eye movements

2020 ◽  
Author(s):  
Alejandro Clemotte ◽  
Miguel A. Velasco ◽  
Eduardo Rocón
Keyword(s):  
Cerebral Palsy ◽  
Eye Movements ◽  
Head Movement ◽  
Motor Disorders ◽  
Severe Motor ◽  
Movement Assessment

scholarly journals Clinical-neurological features of prematurely born children with hypoxic-ischemic lesions of the central nervous system

2019 ◽  
Vol 85 (4) ◽  
pp. 55-60
Author(s):  
O.V. Vareshniuk ◽  
V.V. Vyun
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Cerebral Palsy ◽  
Intraventricular Hemorrhage ◽  
Spastic Cerebral Palsy ◽  
Spastic Diplegia ◽  
Motor Disorders ◽  
Severe Motor ◽  
The Central Nervous System ◽  
Neurological Features

The clinical and neurological features of prematurely born children with perinatal hypoxic-ischemic lesions of the central nervous system were studied. A comprehensive examination of 79 preterm infants of both sexes who underwent perinatal hypoxic-ischemic lesions of the central nervous system was performed. 37.9 % of the surveyed were diagnosed with spastic cerebral palsy, 20.3 % were diagnosed with spastic diplegia, 27.8 % were diagnosed with childhood hemiplegia, hydrocephalus was acquired in 13.9 % as a result of non-traumatic intraventricular hemorrhage. In 10.3 % of children, severe movement disorders (patients with spastic cerebral palsy and acquired hydrocephalus without surgery) were noted, 37.7 % of the examined did not master walking (patients with spastic diplegia, spastic cerebral palsy and acquired hydrocephalus operated on after 6 months of life), 35.5 % of children have mastered walking with assistive devices (patients with spastic diplegia and acquired hydrocephalus operated on up to 6 months of age), 16.5 % of children have mastered walking without restrictions (children with childhood hemiplegia and acquired hydrocephalus, operated on up to 6 months of age). Characteristic structural changes in perinatal hypoxic-ischemic lesions of the central nervous system are periventricular leukomalacia of the II–III degree and intraventricular hemorrhage of the I–III degree. The study of somatosensory evoked potentials conducted in the course of the work showed that at the 3rd, 4th levels of disorders of motor functions by GMFCP, there is a significant decrease in the function of conducting along the somatosensory pathway, depression of the amplitude of the peaks. It has been established, that in the structure of severe motor disorders in children with perinatal hypoxic-ischemic lesions of the central nervous system, violations of arbitrary regulation of movements and postural control are significant. A clear manifestation of the close correlation between motor function impairment, cognitive activity and anxiety level in the examined children has been established, which testifies to the negative impact of a negative emotional state on the development of a child with severe motor disorders.

scholarly journals Motor development of children born prematurely with perinatal hypoxic-ischemic damages of the central nervous system

2019 ◽  
Vol 84 (3) ◽  
pp. 43-48
Author(s):  
O. Vareshniuk
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Cerebral Palsy ◽  
Periventricular Leukomalacia ◽  
Spastic Diplegia ◽  
Motor Disorders ◽  
Motor Functions ◽  
Posthemorrhagic Hydrocephalus ◽  
Severe Motor ◽  
The Central Nervous System

A comprehensive examination of 79 children of middle age (3,2±1,3) years old with perinatal hypoxic-ischemic damage to the central nervous system who were born prematurely was performed. The clinical features of impaired motor functions in premature infants who underwent perinatal hypoxic-ischemic brain damage complicated by intraventricular hemorrhages were studied. It was shown that cerebral palsy was diagnosed in 20,3 % of sick children, which was accompanied by severe motor disorders of levels IV–V according to the classification of motor functions GMFCS; 37,9 % have spastic diplegia with II–III level of motor disorders; 27,8 % have a hemiplegic form of cerebral palsy with motor disorders corresponding to level II of the GMFCS classification. Acquired posthemorrhagic hydrocephalus was diagnosed in 14,0 % of the examined children, while the vast majority of children who were operated on before 6 months of age did not have motor deficiency (level III according to the GMFCS classification); 1 child (9,1 %) was not operated on and had a V level of motor disorders according to GMFCS. It has been established that the most significant factors that form a severe motor prognosis are: gestational age of 27–30 weeks, peri-intraventricular hemorrhages of II–IV degrees, periventricular leukomalacia of III degree and signs of periventricular ischemia.

scholarly journals Neural Basis of Visually Guided Head Movements Studied With fMRI

2003 ◽  
Vol 89 (5) ◽  
pp. 2516-2527 ◽  
Author(s):  
Laurent Petit ◽  
Michael S. Beauchamp
Keyword(s):  
Eye Movements ◽  
Head Movement ◽  
Brain Activity ◽  
Posterior Part ◽  
Vestibular Stimulation ◽  
Head Movements ◽  
Oculomotor Control ◽  
Imaging Studies ◽  
Neural Basis ◽  
Temporoparietal Junction

We used event-related fMRI to measure brain activity while subjects performed saccadic eye, head, and gaze movements to visually presented targets. Two distinct patterns of response were observed. One set of areas was equally active during eye, head, and gaze movements and consisted of the superior and inferior subdivisions of the frontal eye fields, the supplementary eye field, the intraparietal sulcus, the precuneus, area MT in the lateral occipital sulcus and subcortically in basal ganglia, thalamus, and the superior colliculus. These areas have been previously observed in functional imaging studies of human eye movements, suggesting that a common set of brain areas subserves both oculomotor and head movement control in humans, consistent with data from single-unit recording and microstimulation studies in nonhuman primates that have described overlapping eye- and head-movement representations in oculomotor control areas. A second set of areas was active during head and gaze movements but not during eye movements. This set of areas included the posterior part of the planum temporale and the cortex at the temporoparietal junction, known as the parieto-insular vestibular cortex (PIVC). Activity in PIVC has been observed during imaging studies of invasive vestibular stimulation, and we confirm its role in processing the vestibular cues accompanying natural head movements. Our findings demonstrate that fMRI can be used to study the neural basis of head movements and show that areas that control eye movements also control head movements. In addition, we provide the first evidence for brain activity associated with vestibular input produced by natural head movements as opposed to invasive caloric or galvanic vestibular stimulation.

Cognitive function in tetraplegic cerebral palsy with severe motor dysfunction

2005 ◽  
Vol 47 (8) ◽  
pp. 562-562 ◽  
Author(s):  
David Strauss ◽  
Lewis Rosenbloom ◽  
Steven Day ◽  
Robert Shavelle
Keyword(s):  
Cerebral Palsy ◽  
Cognitive Function ◽  
Motor Dysfunction ◽  
Severe Motor

scholarly journals Objectification of motor disorders in children with cerebral palsy: what we know so far

2018 ◽  
Vol 6 (1) ◽  
pp. 67-77 ◽  
Author(s):  
Vladimir V. Borzikov ◽  
Natalia N. Rukina ◽  
Alexei N. Kuznetsov ◽  
Anna N. Belova
Keyword(s):  
Cerebral Palsy ◽  
Video Analysis ◽  
Objective Assessment ◽  
Vertical Posture ◽  
Motor Disorders ◽  
Locomotor System ◽  
Hand Motion ◽  
Biomechanical Assessment ◽  
Children With Cerebral Palsy ◽  
The Stability

This study provides an overview of the recent literature regarding the assessment methods of the functional state of the locomotor system in children with cerebral palsy. The objective methods of quantitative assessment of motor disorders in cerebral palsy are presented, including the measurement of stability, biomechanical assessment of walking, and video analysis of movements. The influence of the cognitive load on the ability to maintain the vertical posture in children with cerebral palsy as well as the changes in the stability of the vertical posture with closed eyes were observed. Changes in the walking parameters with an increase in the speed were also recorded in children with cerebral palsy. Methods that assess hand motion in children with cerebral palsy include tests involving the moving of objects, tests for speed assessment in joint movements, and video analysis of motions. The methods and tests for such an evaluation require to be valid and reliable, allowing an objective assessment of the severity of motor disorders in cerebral palsy.

Head Scanning Behavior Predicts Hazard Detection Safety Before Entering an Intersection

2021 ◽  
pp. 001872082110391
Author(s):  
Steven W. Savage ◽  
Lily Zhang ◽  
Garrett Swan ◽  
Alex R. Bowers
Keyword(s):  
Eye Movements ◽  
Head Movement ◽  
Driving Simulator ◽  
Training Programs ◽  
Relative Importance ◽  
Driver Training ◽  
Hazard Detection ◽  
Simulator Study ◽  
Older Subjects ◽  
Scanning Behavior

Objective We conducted a driving simulator study to investigate scanning and hazard detection before entering an intersection. Background Insufficient scanning has been suggested as a factor contributing to intersection crashes. However, little is known about the relative importance of the head and eye movement components of that scanning in peripheral hazard detection. Methods Eleven older (mean 67 years) and 18 younger (mean 27 years) current drivers drove in a simulator while their head and eye movements were tracked. They completed two city drives (42 intersections per drive) with motorcycle hazards appearing at 16 four-way intersections per drive. Results Older subjects missed more hazards (10.2% vs. 5.2%). Failing to make a scan with a substantial head movement was the primary reason for missed hazards. When hazards were detected, older drivers had longer RTs (2.6s vs. 2.3s), but drove more slowly; thus, safe response rates did not differ between the two groups (older 83%; younger 82%). Safe responses were associated with larger (28.8° vs. 20.6°) and more numerous (9.4 vs. 6.6) gaze scans. Scans containing a head movement were stronger predictors of safe responses than scans containing only eye movements. Conclusion Our results highlight the importance of making large scans with a substantial head movement before entering an intersection. Eye-only scans played little role in detection and safe responses to peripheral hazards. Application Driver training programs should address the importance of making large scans with a substantial head movement before entering an intersection.

Nonspecific Visuospatial Imagery as a Novel Mental Task for Online EEG-Based BCI Control

2020 ◽  
Vol 30 (06) ◽  
pp. 2050026 ◽  
Author(s):  
Filip Stojic ◽  
Tom Chau
Keyword(s):  
Visual Cortex ◽  
Visual Field ◽  
Motor Disorders ◽  
Neural Pathways ◽  
Alpha Band ◽  
Mental Task ◽  
Computer Interfaces ◽  
Dry Electrodes ◽  
Control Paradigm ◽  
Severe Motor

Brain–computer interfaces (BCIs) can provide a means of communication to individuals with severe motor disorders, such as those presenting as locked-in. Many BCI paradigms rely on motor neural pathways, which are often impaired in these individuals. However, recent findings suggest that visuospatial function may remain intact. This study aimed to determine whether visuospatial imagery, a previously unexplored task, could be used to signify intent in an online electroencephalography (EEG)-based BCI. Eighteen typically developed participants imagined checkerboard arrow stimuli in four quadrants of the visual field in 5-s trials, while signals were collected using 16 dry electrodes over the visual cortex. In online blocks, participants received graded visual feedback based on their performance. An initial BCI pipeline (visuospatial imagery classifier I) attained a mean accuracy of [Formula: see text]% classifying rest against visuospatial imagery in online trials. This BCI pipeline was further improved using restriction to alpha band features (visuospatial imagery classifier II), resulting in a mean pseudo-online accuracy of [Formula: see text]%. Accuracies exceeded the threshold for practical BCIs in 12 participants. This study supports the use of visuospatial imagery as a real-time, binary EEG-BCI control paradigm.

General movement assessment: Predicting cerebral palsy in clinical practise

2007 ◽  
Vol 83 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Lars Adde ◽  
Marite Rygg ◽  
Kristin Lossius ◽  
Gunn Kristin Øberg ◽  
Ragnhild Støen
Keyword(s):  
Cerebral Palsy ◽  
Movement Assessment ◽  
Clinical Practise ◽  
General Movement

Correlates of Therapeutic Progress by Infants with Cerebral Palsy and Motor Delay

1984 ◽  
Vol 58 (1) ◽  
pp. 159-163 ◽  
Author(s):  
Howard P. Parette ◽  
Loreta F. Holder ◽  
James D. Sears
Keyword(s):  
Cerebral Palsy ◽  
Therapeutic Intervention ◽  
Significant Relationship ◽  
Intervention Programs ◽  
Parental Participation ◽  
Kendall’S Tau ◽  
Kendall's Tau ◽  
Motor Delay ◽  
Evaluation Instruments ◽  
Severe Motor

A group of 10 infants diagnosed as having cerebral palsy or severe motor delays was administered pre/posttest assessments of both standardized and nonstandardized motor-evaluation instruments. Following 6 mo. of therapeutic intervention provided through neurodevelopmental treatment, the motoric gains of these infants were correlated with age, IQ, infant hours in treatment, hours of parental participation, and degree of involvement. Kendall's tau correlations showed a significant relationship between motoric progress and age, parental participation, and degree of involvement. The dilemma faced by habilitation professionals regarding whether or not to encourage parents to participate in therapeutic intervention programs is noted.

scholarly journals ‘Cognitive function in tetraplegic cerebral palsy with severe motor dysfunction’

2007 ◽  
Vol 47 (8) ◽  
pp. 562-562
Author(s):  
David Strauss ◽  
Lewis Rosenbloom ◽  
Steven Day ◽  
Robert Shavelle
Keyword(s):  
Cerebral Palsy ◽  
Cognitive Function ◽  
Motor Dysfunction ◽  
Severe Motor
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