Discriminative Analysis of Cerebral Motor Function Tissue for Left and Right Handedness Based on DTI

2011 ◽  
Author(s):  
Jiaolong Qin ◽  
Wei Wang ◽  
Chaoyi Pang ◽  
Liming Tang
Keyword(s):  
Motor Function ◽  
Left And Right ◽  
Discriminative Analysis

scholarly journals The effects of an eight-week multi-model sport activity home programme on function of children with cerebral palsy

2020 ◽  
Vol 12 (1) ◽  
pp. 105-114
Author(s):  
Sema Özandaç Polat ◽  
Ahmet Hilmi Yücel ◽  
Gonca İnce
Keyword(s):  
Cerebral Palsy ◽  
Motor Function ◽  
Sport Activity ◽  
Control Group ◽  
Gross Motor ◽  
Gross Motor Function ◽  
Gross Motor Function Measure ◽  
Children With Cerebral Palsy ◽  
Left And Right ◽  
Experimental Group

SummaryStudy aim: This study was performed to investigate the effects of an eight-week multi-model sport activity home programme on function of children with cerebral palsy.Material and methods: The study included 44 patients (11 girls, and 33 boys) aged between 4 and 11 years, having spastic diplegic and hemiplegic cerebral palsy, and receiving physical treatment from the rehabilitation centre. The 44 patients were divided into two groups each consisting of 22 children as the experimental group and control group. The mean age, height and weight were 8.27 ± 2.10 years, 123.36 ± 17.33 cm and 25.45 ± 8.87 kg in the experimental group, while the same parameters were 7.27 ± 2.80 years, 109.36 ± 16.99 cm and 20.20 ± 7.16 kg in the control group. Before taking measurements, the consent forms were signed by the families of patients with CP. The physical therapy programme based on the Bobath NDT method which took forty minutes was applied to both groups two days per week. Also, the multi-model sport activity home programme which took 50 minutes was applied regularly during eight weeks and five days a week in the Experimental Group. The Impact on Family Scale, the Gross Motor Function Classification System, the Gross Motor Function Measure, One Minute Walk Test, the time standing on the left and right foot, and Visual Pain Analog Scale were evaluated before and after the eight-week multi-model sport activity home programme.Results: There were no significant differences in some measurements including the Gross Motor Function Classification System, the Gross Motor Function Measure, One Minute Walk Test, and the time standing on the left and right foot. A significant difference was found only in the Visual Pain Analog Scale (p = 0.003).Conclusion: The effects of the eight-week multi-model sport activity home programme can contribute to a decrease in pain level of children with cerebral palsy.

scholarly journals G-Causality Brain Connectivity Differences of Finger Movements between Motor Execution and Motor Imagery

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Chao Chen ◽  
Jiaxin Zhang ◽  
Abdelkader Nasreddine Belkacem ◽  
Shanting Zhang ◽  
Rui Xu ◽  
...  
Keyword(s):  
Granger Causality ◽  
Motor Function ◽  
Motor Imagery ◽  
Brain Connectivity ◽  
Motor Execution ◽  
Finger Movements ◽  
Function Recovery ◽  
Significant Difference ◽  
Brain Stroke ◽  
Left And Right

Motor imagery is one of the classical paradigms which have been used in brain-computer interface and motor function recovery. Finger movement-based motor execution is a complex biomechanical architecture and a crucial task for establishing most complicated and natural activities in daily life. Some patients may suffer from alternating hemiplegia after brain stroke and lose their ability of motor execution. Fortunately, the ability of motor imagery might be preserved independently and worked as a backdoor for motor function recovery. The efficacy of motor imagery for achieving significant recovery for the motor cortex after brain stroke is still an open question. In this study, we designed a new paradigm to investigate the neural mechanism of thirty finger movements in two scenarios: motor execution and motor imagery. Eleven healthy participants performed or imagined thirty hand gestures twice based on left and right finger movements. The electroencephalogram (EEG) signal for each subject during sixty trials left and right finger motor execution and imagery were recorded during our proposed experimental paradigm. The Granger causality (G-causality) analysis method was employed to analyze the brain connectivity and its strength between contralateral premotor, motor, and sensorimotor areas. Highest numbers for G-causality trials of 37 ± 7.3, 35.5 ± 8.8, 36.3 ± 10.3, and 39.2 ± 9.0 and lowest Granger causality coefficients of 9.1 ± 3.2, 10.9 ± 3.7, 13.2 ± 0.6, and 13.4 ± 0.6 were achieved from the premotor to motor area during execution/imagination tasks of right and left finger movements, respectively. These results provided a new insight into motor execution and motor imagery based on hand gestures, which might be useful to build a new biomarker of finger motor recovery for partially or even completely plegic patients. Furthermore, a significant difference of the G-causality trial number was observed during left finger execution/imagery and right finger imagery, but it was not observed during the right finger execution phase. Significant difference of the G-causality coefficient was observed during left finger execution and imagery, but it was not observed during right finger execution and imagery phases. These results suggested that different MI-based brain motor function recovery strategies should be taken for right-hand and left-hand patients after brain stroke.

scholarly journals The effects of mechanical tactile stimulation on corticospinal excitability and motor function depend on pin protrusion patterns

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sho Kojima ◽  
Shota Miyaguchi ◽  
Ryoki Sasaki ◽  
Shota Tsuiki ◽  
Kei Saito ◽  
...  
Keyword(s):  
Motor Function ◽  
Tactile Stimulation ◽  
Index Finger ◽  
Motor Evoked Potentials ◽  
Corticospinal Excitability ◽  
Somatosensory Stimulation ◽  
Left And Right ◽  
The Right ◽  
Single Blind ◽  
Finger Pad

Abstract Somatosensory stimulation modulates corticospinal excitability. Mechanical tactile stimulation (MS) activates cortical activity depending on tactile stimulation patterns. In this study, we examined whether the effects of mechanical tactile stimulation on corticospinal excitability and motor function depend on different pin protrusions patterns. This single-blind study included 18 healthy subjects. Two types of MS interventions were used: repetitive global stimulus (RGS) intervention was used to stimulate the finger by using 24 pins installed on a finger pad, and sequential stepwise displacement stimulus (SSDS) intervention was used to stimulate the finger by moving a row of 6 pins between the left and right sides on the finger pad. MS interventions were applied to the right index finger for 20 min (stim on/stim off, 1 s/5 s) at a frequency of 20 Hz. After RGS intervention, motor evoked potentials (MEPs) by transcranial magnetic stimulation were observed to be significantly smaller than pre-intervention MEPs; however, motor function using the grooved pegboard task remained unchanged. After SSDS intervention, MEPs were significantly larger and motor function significantly improved compared with pre-intervention values. Our results demonstrated that MS intervention can modulate corticospinal excitability and motor function and that the effects of MS intervention depend on MS intervention patterns.

The three-dimensional structure of frozen-hydrated left- and right-handed forms of bacterial flagellar filaments from an identical serotype

1986 ◽  
Vol 44 ◽  
pp. 298-299
Author(s):  
S. Trachtenberg ◽  
D. J. DeRosier
Keyword(s):  
Ionic Strength ◽  
Basal Body ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Protein Species ◽  
Liquid Environment ◽  
Bacterial Flagellum ◽  
Left And Right ◽  
Rotary Motor ◽  
Helical Parameters

The bacterial cell is propelled through the liquid environment by means of one or more rotating flagella. The bacterial flagellum is composed of a basal body (rotary motor), hook (universal coupler), and filament (propellor). The filament is a rigid helical assembly of only one protein species — flagellin. The filament can adopt different morphologies and change, reversibly, its helical parameters (pitch and hand) as a function of mechanical stress and chemical changes (pH, ionic strength) in the environment.

Advantages of Complementary Stereo Images as Viewed with the Low-Temperature Field-Emission SEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1314-1315
Author(s):  
William P. Wergin ◽  
Eric F. Erbe
Keyword(s):  
Fold Increase ◽  
Horizontal Displacement ◽  
Three Dimensions ◽  
Stereo Image ◽  
Stereo Pair ◽  
Sem Micrograph ◽  
Left And Right ◽  
The Common ◽  
The Brain ◽  
Pair Analysis

The eye-brain complex allows those of us with normal vision to perceive and evaluate our surroundings in three-dimensions (3-D). The principle factor that makes this possible is parallax - the horizontal displacement of objects that results from the independent views that the left and right eyes detect and simultaneously transmit to the brain for superimposition. The common SEM micrograph is a 2-D representation of a 3-D specimen. Depriving the brain of the 3-D view can lead to erroneous conclusions about the relative sizes, positions and convergence of structures within a specimen. In addition, Walter has suggested that the stereo image contains information equivalent to a two-fold increase in magnification over that found in a 2-D image. Because of these factors, stereo pair analysis should be routinely employed when studying specimens.Imaging complementary faces of a fractured specimen is a second method by which the topography of a specimen can be more accurately evaluated.

Histological evaluation of cochlear hair cell damage from noise-induced hearing loss in chinchillas

1990 ◽  
Vol 48 (3) ◽  
pp. 332-333
Author(s):  
R.V. Harrison ◽  
R.J. Mount ◽  
P. White ◽  
N. Fukushima
Keyword(s):  
Hair Cell ◽  
Evoked Potential ◽  
Cell Damage ◽  
Acoustic Trauma ◽  
Histological Evaluation ◽  
Cell Integrity ◽  
Functional Changes ◽  
Cochlear Hair Cell ◽  
Left And Right ◽  
Contralateral Ear

In studies which attempt to define the influence of various factors on recovery of hair cell integrity after acoustic trauma, an experimental and a control ear which initially have equal degrees of damage are required. With in a group of animals receiving an identical level of acoustic trauma there is more symmetry between the ears of each individual, in respect to function, than between animals. Figure 1 illustrates this, left and right cochlear evoked potential (CAP) audiograms are shown for two chinchillas receiving identical trauma. For this reason the contralateral ear is used as control.To compliment such functional evaluations we have devised a scoring system, based on the condition of hair cell stereocilia as revealed by scanning electron microscopy, which permits total stereociliar damage to be expressed numerically. This quantification permits correlation of the degree of structural pathology with functional changes. In this paper wereport experiments to verify the symmetry of stereociliar integrity between two ears, both for normal (non-exposed) animals and chinchillas in which each ear has received identical noise trauma.

The crystallography characteristic of (Mn,Fe)S single crystal

1990 ◽  
Vol 48 (4) ◽  
pp. 898-899
Author(s):  
Jiang Xishan
Keyword(s):  
Single Crystal ◽  
Cast Steel ◽  
Point Group ◽  
Central Area ◽  
Hexagonal Crystal ◽  
Growth Step ◽  
Left And Right ◽  
Relationship Of ◽  
Fcc Structure ◽  
New Discovery

This paper reports the growth step pattern and morphology at equilibrium and growth states of (Mn,Fe)S single crystal on the wall of micro-voids in ZG25 cast steel by using scanning electron microscope. Seldom report was presented on the growth morphology and steppattern of (Mn,Fe)S single crystal.Fig.1 shows the front half of the polyhedron of(Mn,Fe)S single crystal,its central area being the square crystal plane,the two pairs of hexagons symmetrically located in the high and low, the left and right with a certain, angle to the square crystal plane.According to the symmetrical relationship of crystal, it was defined that the (Mn,Fe)S single crystal at equilibrium state is tetrakaidecahedron consisted of eight hexagonal crystal planes and six square crystal planes. The macroscopic symmetry elements of the tetrakaidecahedron correpond to Oh—n3m symmetry class of fcc structure,in which the hexagonal crystal planes are the { 111 } crystal planes group,square crystal plaits are the { 100 } crystal planes group. This new discovery of the (Mn,Fe)S single crystal provides a typical example of the point group of Oh—n3m.

Prevalence of Speech Problems and the Use of Augmentative and Alternative Communication in Children With Cerebral Palsy: A Registry-Based Study in Norway

2010 ◽  
Vol 19 (1) ◽  
pp. 12-20 ◽  
Author(s):  
Guro Andersen ◽  
Tone R. Mjøen ◽  
Torstein Vik
Keyword(s):  
Cerebral Palsy ◽  
Motor Function ◽  
Gestational Age ◽  
Augmentative And Alternative Communication ◽  
Alternative Communication ◽  
Gross Motor ◽  
Gross Motor Function ◽  
Children With Cerebral Palsy ◽  
Communicative Abilities ◽  
Normal Speech

Abstract This study describes the prevalence of speech problems and the use of augmentative and alternative communication (AAC) in children with cerebral palsy (CP) in Norway. Information on the communicative abilities of 564 children with CP born 1996–2003, recorded in the Norwegian CP Registry, was collected. A total of 270 children (48%) had normal speech, 90 (16%) had slightly indistinct speech, 52 (9%) had indistinct speech, 35 (6%) had very indistinct speech, 110 children (19%) had no speech, and 7 (1%) were unknown. Speech problems were most common in children with dyskinetic CP (92 %), in children with the most severe gross motor function impairments and among children being totally dependent on assistance in feeding or tube-fed children. A higher proportion of children born at term had speech problems when compared with children born before 32 weeks of gestational age 32 (p > 0.001). Among the 197 children with speech problems only, 106 (54%) used AAC in some form. Approximately 20% of children had no verbal speech, whereas ~15% had significant speech problems. Among children with either significant speech problems or no speech, only 54% used AAC in any form.

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