Motor Cortex Excitability in Stroke Before and After Constraint-induced Movement Therapy

2006 ◽  
Vol 19 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Joachim Liepert
2007 ◽  
Vol 118 (4) ◽  
pp. e111
Author(s):  
M. Walther ◽  
M. Walther ◽  
V. Brodbeck ◽  
H. Jünger ◽  
M. Staudt ◽  
...  

NeuroImage ◽  
1998 ◽  
Vol 7 (4) ◽  
pp. S24
Author(s):  
J. Liepert ◽  
H. Bauder ◽  
M. Sommer ◽  
W.H.R. Miltner ◽  
C. Dettmers ◽  
...  

2007 ◽  
Vol 2007 ◽  
pp. 1-9 ◽  
Author(s):  
Tomas E. Ward ◽  
Christopher J. Soraghan ◽  
Fiachra Matthews ◽  
Charles Markham

This paper describes a concept for the extension of constraint-induced movement therapy (CIMT) through the use of feedback of primary motor cortex activity. CIMT requires residual movement to act as a source of feedback to the patient, thus preventing its application to those with no perceptible movement. It is proposed in this paper that it is possible to provide feedback of the motor cortex effort to the patient by measurement with near infrared spectroscopy (NIRS). Significant changes in such effort may be used to drive rehabilitative robotic actuators, for example. This may provide a possible avenue for extending CIMT to patients hitherto excluded as a result of severity of condition. In support of such a paradigm, this paper details the current status of CIMT and related attempts to extend rehabilitation therapy through the application of technology. An introduction to the relevant haemodynamics is given including a description of the basic technology behind a suitable NIRS system. An illustration of the proposed therapy is described using a simple NIRS system driving a robotic arm during simple upper-limb unilateral isometric contraction exercises with healthy subjects.


2019 ◽  
Author(s):  
Brianna M. Goodwin ◽  
Emily K. Sabelhaus ◽  
Ying-Chun Pan ◽  
Kristie F. Bjornson ◽  
Kelly L. D. Pham ◽  
...  

AbstractImportanceConstraint Induced Movement Therapy (CIMT) is a common treatment for children with unilateral cerebral palsy (CP). While clinic-based assessments have demonstrated improvements in arm function after CIMT, quantifying if these changes are translated and sustained outside of a clinic setting remains unclear.ObjectiveAccelerometers were used to quantify arm movement for children with CP one week before, during, and 4+ weeks after CIMT and compared to typically-developing (TD) peers.DesignObservational during CIMTSettingClinical assessments and treatment occurred in a tertiary hospital and accelerometry data were collected in the communityParticipants7 children with CP (5m/2f, 7.4 ± 1.2 yrs) and 7 TD peers (2m/5f, 7.0 ± 2.3 yrs)Intervention30-hour CIMT protocolOutcomes and MeasuresThe use ratio, magnitude ratio, and bilateral magnitude were calculated from the accelerometry data. Clinical measures were evaluated before and after CIMT and surveys were used to assess the feasibility of using accelerometers.ResultsBefore CIMT, children with CP used their paretic arm less than their TD peers. During therapy, their frequency and magnitude of paretic arm use increased in the clinic and in daily life. After therapy, although clinical scores improved, children reverted to baseline accelerometry values. Additionally, children and parents in both cohorts had positive perceptions of wearing accelerometers.Conclusions and RelevanceThe lack of sustained improved accelerometry metrics following CIMT suggest therapy gains did not translate to increased movement outside the clinic. Additional therapy may be needed to help the transfer of skills to the community setting.What this Article AddsThis study compares the movement of children with CP undergoing CIMT in the community setting with their typically developing peers. Additional interventions may be needed in combination with or following CIMT to sustain the benefits of the therapy outside of the clinic.


2011 ◽  
Vol 25 (9) ◽  
pp. 819-829 ◽  
Author(s):  
Nadia Bolognini ◽  
Giuseppe Vallar ◽  
Carlotta Casati ◽  
Lydia Abdul Latif ◽  
Rasheda El-Nazer ◽  
...  

Background. Recovery of motor function after stroke may depend on a balance of activity in the neural network involving the affected and the unaffected motor cortices. Objective. To assess whether transcranial direct current stimulation (tDCS) can increase the training-induced recovery of motor functions. Methods. In an exploratory study, 14 patients with chronic stroke and mean Fugl-Meyer Upper Extremity Motor Assessment of 29 (range = 8-50) entered a double-blind sham-controlled study, aimed to investigate neurophysiological and behavioral effects of bihemispheric tDCS (cathodal stimulation of the unaffected motor cortex and anodal stimulation of the affected motor cortex), combined with constraint-induced movement therapy (CIMT). Results. Patients in both groups demonstrated gains on primary outcome measures, that is, Jebsen Taylor Hand Function Test, Handgrip Strength, Motor Activity Log Scale, and Fugl-Meyer Motor Score. Gains were larger in the active tDCS group. Neurophysiological measurements showed a reduction in transcallosal inhibition from the intact to the affected hemisphere and increased corticospinal excitability in the affected hemisphere only in the active tDCS/CIMT group. Such neurophysiological changes correlated with the magnitude of the behavioral gains. Both groups showed a reduction in corticospinal excitability of the unaffected hemisphere. Conclusions. CIMT alone appears effective in modulating local excitability but not in removing the imbalance in transcallosal inhibition. Bihemispheric tDCS may achieve this goal and foster greater functional recovery.


2009 ◽  
Vol 89 (4) ◽  
pp. 361-369 ◽  
Author(s):  
Stella de Bode ◽  
Stacy L Fritz ◽  
Kristi Weir-Haynes ◽  
Gary W Mathern

Background and PurposeThis case report describes the feasibility and efficacy of the use of constraint-induced movement therapy (CIMT) in 4 individuals (aged 12–22 years) who underwent cerebral hemispherectomy (age at time of surgery=4–10 years). The aims of this case series were: (1) to evaluate the feasibility of this therapeutic approach involving a shortened version of CIMT, (2) to examine improvements that occurred within the upper extremity of the hemiparetic side, (3) to investigate the feasibility of conducting brain imaging in individuals with depressed mental ages, and (4) to examine changes in the sensorimotor cortex following intervention.Case DescriptionThe patients received a shortened version of CIMT for 3 hours each day for a period of 10 days. In addition, a standard resting splint was used for the unimpaired hand for an 11-day period. Each patient was encouraged to wear the splint for 90% of his or her waking hours. The following outcome measures were used: the Actual Amount of Use Test (AAUT), the Box and Block Test (BBT), and the upper-extremity grasping and motor portions of the Fugl-Meyer Assessment of Motor Recovery (FM).OutcomesImmediately after therapy, improvements were found in AAUT and BBT scores, but no improvements were found in FM scores. Three patients underwent brain imaging before and after therapy and showed qualitative changes consistent with reorganization of sensorimotor cortical representations of both paretic and nonparetic hands in one isolated hemisphere.DiscussionThe findings suggest that CIMT may be a feasible method of rehabilitation in individuals with chronic hemiparesis, possibly leading to neuroplastic therapy–related changes in the brain.


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