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Journal articles on the topic 'Ipsilesional stimulation'

Author: Grafiati

Published: 10 March 2023

Last updated: 31 July 2025

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1

Vahdat, Shahabeddin, Arjun Vivek Pendharkar, Terrance Chiang, et al. "Brain-wide neural dynamics of poststroke recovery induced by optogenetic stimulation." Science Advances 7, no. 33 (2021): eabd9465. http://dx.doi.org/10.1126/sciadv.abd9465.

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Poststroke optogenetic stimulations can promote functional recovery. However, the circuit mechanisms underlying recovery remain unclear. Elucidating key neural circuits involved in recovery will be invaluable for translating neuromodulation strategies after stroke. Here, we used optogenetic functional magnetic resonance imaging to map brain-wide neural circuit dynamics after stroke in mice treated with and without optogenetic excitatory neuronal stimulations in the ipsilesional primary motor cortex (iM1). We identified key sensorimotor circuits affected by stroke. iM1 stimulation treatment res

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Cunningham, David A., Jayme S. Knutson, Vishwanath Sankarasubramanian, Kelsey A. Potter-Baker, Andre G. Machado, and Ela B. Plow. "Bilateral Contralaterally Controlled Functional Electrical Stimulation Reveals New Insights Into the Interhemispheric Competition Model in Chronic Stroke." Neurorehabilitation and Neural Repair 33, no. 9 (2019): 707–17. http://dx.doi.org/10.1177/1545968319863709.

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Background. Upper-limb chronic stroke hemiplegia was once thought to persist because of disproportionate amounts of inhibition imposed from the contralesional on the ipsilesional hemisphere. Thus, one rehabilitation strategy involves discouraging engagement of the contralesional hemisphere by only engaging the impaired upper limb with intensive unilateral activities. However, this premise has recently been debated and has been shown to be task specific and/or apply only to a subset of the stroke population. Bilateral rehabilitation, conversely, engages both hemispheres and has been shown to be

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Kakinoki, Ryosuke, Scott F. M. Duncan, Ryosuke Ikeguchi, et al. "Motor and Sensory Cortical Changes after Contralateral Cervical Seventh Nerve Root (CC7) Transfer in Patients with Brachial Plexus Injuries." Journal of Hand Surgery (Asian-Pacific Volume) 22, no. 02 (2017): 138–49. http://dx.doi.org/10.1142/s0218810417500162.

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Background: Previous animal studies demonstrated that the sensory and motor functions in ipsilesional upper limbs that had been reconstructed by CC7 transfer eventually associated with the contralesional brain cortices that had originally mediated the functions of the ipsilesional upper limbs before brachial plexus injury (BPI). Our hypothesis was that the same findings would be seen in humans.Methods: Four patients with total BPI treated with CC7 transfer were included. Changes in the locations of the activated areas in the primary motor (M1) and somatosensory (S1) cortices corresponding to t

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Tammasse, Jumraini, and Anthony Gunawan. "Combined ipsilesional excitation and contralesional inhibition of Repetitive Transcranial Magnetic Stimulation (rTMS) as a motor rehabilitation in ischemic stroke patient: a case report." Bali Medical Journal 13, no. 2 (2024): 741–45. https://doi.org/10.15562/bmj.v13i2.5083.

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Link of Video Abstract: https://youtu.be/Unt1HueFSEE Background: Stroke is one of the major health problems in the world, with high mortality and disability rates. Transcranial Magnetic Stimulation (TMS) is a non-invasive and safe method of stimulating neurons in the brain. Various studies have used rTMS as an adjunctive modality to enhance motor restoration after stroke. Case Presentation: A 35-year-old man was brought to the hospital with sudden weakness in the right side of his body since 9 days ago. On neurological examination, there was paresis of right cranial nerves VII and XII and left

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Juan Du, Weihe Yao, Jianrui Li, et al. "Motor Network Reorganization After Repetitive Transcranial Magnetic Stimulation in Early Stroke Patients: A Resting State fMRI Study." Neurorehabilitation and Neural Repair 36, no. 1 (2021): 61–68. http://dx.doi.org/10.1177/15459683211054184.

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Objective To compare the effects of high-frequency (10 Hz) versus low-frequency (1 Hz) repetitive Transcranial Magnetic Stimulation (rTMS) on motor recovery and functional reorganization of the cortical motor network during the early phase of stroke. Methods Forty-six hospitalized, first-ever ischemic stroke patients in early stage (within two weeks) with upper limb motor deficits were recruited. They were randomly allocated to three groups with 10 Hz ipsilesional rTMS, 1 Hz contralesional rTMS, and sham rTMS of five daily session. All patients underwent motor function (Upper Extremity Fugl–Me

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Guo, Xiaoli, Yongzhi He, Hongyang Lu, et al. "Plastic Change along the Intact Crossed Pathway in Acute Phase of Cerebral Ischemia Revealed by Optical Intrinsic Signal Imaging." Neural Plasticity 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/1923160.

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The intact crossed pathway via which the contralesional hemisphere responds to the ipsilesional somatosensory input has shown to be affected by unilateral stroke. The aim of this study was to investigate the plasticity of the intact crossed pathway in response to different intensities of stimulation in a rodent photothrombotic stroke model. Using optical intrinsic signal imaging, an overall increase of the contralesional cortical response was observed in the acute phase (≤48 hours) after stroke. In particular, the contralesional hyperactivation is more prominent under weak stimulations, while

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Ginting, Suska Lara, Yetty Hambarsari, Rivan Danuaji, and Baarid Luqman Hamidi. "The Effectiveness of Transcranial Magnetic Stimulation in Post Stroke Dysphagia, A Case Report." Magna Neurologica 2, no. 1 (2024): 29–33. http://dx.doi.org/10.20961/magnaneurologica.v2i1.942.

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Background: A 72-year-old male, experiencing dysphagia and left-sided weakness for six months post-stroke, encountered challenges such as coughing and choking during the consumption of liquids and soft foods, along with a prolonged meal-swallowing process. Bilateral thrombotic infarction and left lateralization were revealed through Magnetic Resonance Imaging (MRI). Case: The Gugging Swallowing Screening Scale (GUSS) assessment demonstrated severe impairment with a total score of 7, persisting despite conventional physiotherapy attempts to improve swallowing function. Subsequently, repetitive

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8

Guo, Zhiwei, Yu Jin, Xi Bai, et al. "Distinction of High- and Low-Frequency Repetitive Transcranial Magnetic Stimulation on the Functional Reorganization of the Motor Network in Stroke Patients." Neural Plasticity 2021 (January 20, 2021): 1–11. http://dx.doi.org/10.1155/2021/8873221.

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Objective. To investigate the functional reorganization of the motor network after repetitive transcranial magnetic stimulation (rTMS) in stroke patients with motor dysfunction and the distinction between high-frequency rTMS (HF-rTMS) and low-frequency rTMS (LF-rTMS). Methods. Thirty-three subcortical stroke patients were enrolled and assigned to the HF-rTMS group, LF-rTMS group, and sham group. Each patient of rTMS groups received either 10.0 Hz rTMS over the ipsilesional primary motor cortex (M1) or 1.0 Hz rTMS over the contralesional M1 for 10 consecutive days. A resting-state functional ma

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Zou, Fei, Yi-Fang Lin, Shu-Geng Chen, et al. "The Impact of Electroacupuncture at Hegu, Shousanli, and Quchi Based on the Theory “Treating Flaccid Paralysis by Yangming Alone” on Stroke Patients’ EEG: A Pilot Study." Evidence-Based Complementary and Alternative Medicine 2020 (November 24, 2020): 1–9. http://dx.doi.org/10.1155/2020/8839491.

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Background. In China, electroacupuncture based on meridians theory “treating flaccid paralysis by Yangming alone” has been widely used for stroke rehabilitation in clinical practice. The aim of this study was to explore the electroencephalography change of electroacupuncture intervention on strokes patients with flaccid paralysis. Methods. Twenty-three stroke patients with flaccid paralysis and six stroke patients with spasticity accepted electroacupuncture with the acupoints Hegu [LI4], Shousanli [LI10], and Quchi [LI11] for 20 minutes and their EEG data were recorded before, during, and afte

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Kim, Young R., In J. Huang, Seong-Ryong Lee, et al. "Measurements of BOLD/CBV Ratio Show Altered fMRI Hemodynamics during Stroke Recovery in Rats." Journal of Cerebral Blood Flow & Metabolism 25, no. 7 (2005): 820–29. http://dx.doi.org/10.1038/sj.jcbfm.9600084.

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Brain responses to external stimuli after permanent and transient ischemic insults have been documented using cerebral blood volume weighted (CBVw) functional magnetic resonance imaging (fMRI) in correlation with tissue damage and neurological recovery. Here, we extend our previous studies of stroke recovery in rat models of focal cerebral ischemia by comparing blood oxygen level-dependent (BOLD) and cerebral blood volume (CBV) changes. Responses to forepaw stimulation were measured in normal rats ( n = 5) and stroke rats subjected to 2 h of middle cerebral artery occlusion ( n = 6). Functiona

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Guo, Zhiwei, Yu Jin, Haitao Peng, et al. "Ipsilesional High Frequency Repetitive Transcranial Magnetic Stimulation Add-On Therapy Improved Diffusion Parameters of Stroke Patients with Motor Dysfunction: A Preliminary DTI Study." Neural Plasticity 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/6238575.

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Purpose. The aim of this study was to evaluate the effects of high frequency repetitive transcranial magnetic stimulation (HF-rTMS) on stroke patients with motor dysfunction and to investigate the underlying neural mechanism.Methods. Fifteen stroke patients were assigned to the rTMS treatment (RT) group and conventional treatment (CT) group. Patients in the RT received 10 Hz rTMS stimulation on the ipsilesional primary motor cortex for 10 days plus conventional treatment of CT, which consisted of acupuncture and antiplatelet aggregation medication. Difference in fractional anisotropy (FA) betw

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Ahn, Sung Min, Da Hee Jung, Hong Ju Lee, et al. "Contralesional Application of Transcranial Direct Current Stimulation on Functional Improvement in Ischemic Stroke Mice." Stroke 51, no. 7 (2020): 2208–18. http://dx.doi.org/10.1161/strokeaha.120.029221.

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Background and Purpose: The therapeutic use of transcranial direct current stimulation (tDCS), an adjuvant tool for stroke, induces long-term changes in cortical excitability, for example, the secretion of activity-dependent growth factors. We assessed the proper therapeutic configuration of high-definition tDCS (HD-tDCS) in the subacute stage of ischemic stroke and its underlying expression profiling of growth factors to propose a new method for ensuring better therapeutic effects. Methods: Male C57BL/6J mice were subjected to middle cerebral artery occlusion, after which repetitive HD-tDCS (

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Du, Juan, Jianping Hu, Jingze Hu, et al. "Aberrances of Cortex Excitability and Connectivity Underlying Motor Deficit in Acute Stroke." Neural Plasticity 2018 (October 21, 2018): 1–10. http://dx.doi.org/10.1155/2018/1318093.

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Purpose. This study was aimed at evaluating the motor cortical excitability and connectivity underlying the neural mechanism of motor deficit in acute stroke by the combination of functional magnetic resonance imaging (fMRI) and electrophysiological measures. Methods. Twenty-five patients with motor deficit after acute ischemic stroke were involved. General linear model and dynamic causal model analyses were applied to fMRI data for detecting motor-related activation and effective connectivity of the motor cortices. Motor cortical excitability was determined as a resting motor threshold (RMT)

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Petruseviciene, Laura, Alexander T. Sack, Raimondas Kubilius, and Raimondas Savickas. "High-Frequency Ipsilesional versus Low-Frequency Contralesional Transcranial Magnetic Stimulation after Stroke: Differential Effects on Ipsilesional Upper Extremity Motor Recovery." Medicina 59, no. 11 (2023): 1955. http://dx.doi.org/10.3390/medicina59111955.

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Background and Objectives: Stroke is a major cause of death and disability worldwide; therefore, transcranial magnetic stimulation (TMS) is being widely studied and clinically applied to improve motor deficits in the affected arm. However, recent studies indicate that the function of both arms can be affected after stroke. It currently remains unknown how various TMS methods affect the function of the ipsilesional upper extremity. Materials and Methods: Thirty-five subacute stroke patients with upper extremity motor deficits were enrolled in this study and randomly allocated into three groups,

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Arima, Michiko, Atsuko Ogata, Kazumi Kawahira, and Megumi Shimodozono. "Improvement and Neuroplasticity after Combined Rehabilitation to Forced Grasping." Case Reports in Neurological Medicine 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/1028390.

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The grasp reflex is a distressing symptom but the need to treat or suppress it has rarely been discussed in the literature. We report the case of a 17-year-old man who had suffered cerebral infarction of the right putamen and temporal lobe 10 years previously. Forced grasping of the hemiparetic left upper limb was improved after a unique combined treatment. Botulinum toxin type A (BTX-A) was first injected into the left biceps, wrist flexor muscles, and finger flexor muscles. Forced grasping was reduced along with spasticity of the upper limb. In addition, repetitive facilitative exercise and

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Ferris, Jennifer K., Jason L. Neva, Beatrice A. Francisco, and Lara A. Boyd. "Bilateral Motor Cortex Plasticity in Individuals With Chronic Stroke, Induced by Paired Associative Stimulation." Neurorehabilitation and Neural Repair 32, no. 8 (2018): 671–81. http://dx.doi.org/10.1177/1545968318785043.

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Background: In the chronic phase after stroke, cortical excitability differs between the cerebral hemispheres; the magnitude of this asymmetry depends on degree of motor impairment. It is unclear whether these asymmetries also affect capacity for plasticity in corticospinal tract excitability or whether hemispheric differences in plasticity are related to chronic sensorimotor impairment. Methods: Response to paired associative stimulation (PAS) was assessed bilaterally in 22 individuals with chronic hemiparesis. Corticospinal excitability was measured as the area under the motor-evoked potenti

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Hensel, Lukas, Christian Grefkes, Caroline Tscherpel, et al. "Intermittent theta burst stimulation applied during early rehabilitation after stroke: study protocol for a randomised controlled trial." BMJ Open 9, no. 12 (2019): e034088. http://dx.doi.org/10.1136/bmjopen-2019-034088.

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IntroductionIntermittent theta burst stimulation (iTBS) applied to primary motor cortex (M1) has been shown to modulate both the excitability and connectivity of the motor system. A recent proof-of-principle study, based on a small group of hospitalised patients with acute ischemic stroke, suggested that iTBS applied to the ipsilesional M1 combined with physical therapy early after stroke can amplify motor recovery with lasting after effects. A randomised controlled clinical trial using a double-blind design is warranted to justify the implementation of iTBS-assisted motor rehabilitation in ne

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Mooney, Ronan A., Suzanne J. Ackerley, Deshan K. Rajeswaran, et al. "The Influence of Primary Motor Cortex Inhibition on Upper Limb Impairment and Function in Chronic Stroke: A Multimodal Study." Neurorehabilitation and Neural Repair 33, no. 2 (2019): 130–40. http://dx.doi.org/10.1177/1545968319826052.

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Background. Stroke is a leading cause of adult disability owing largely to motor impairment and loss of function. After stroke, there may be abnormalities in γ-aminobutyric acid (GABA)-mediated inhibitory function within primary motor cortex (M1), which may have implications for residual motor impairment and the potential for functional improvements at the chronic stage. Objective. To quantify GABA neurotransmission and concentration within ipsilesional and contralesional M1 and determine if they relate to upper limb impairment and function at the chronic stage of stroke. Methods. Twelve chron

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Sharma, Vivek, Divya Gupta, Harraman Kaur, and Nayeem Ul Zia. "Comparison of Contralesional and Ipsilesional Repetitive Transcranial Magnetic Stimulation in Stroke Patients." Archives of Physical Medicine and Rehabilitation 96, no. 10 (2015): e70-e71. http://dx.doi.org/10.1016/j.apmr.2015.08.238.

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Hammerbeck, Ulrike, Sarah F. Tyson, Prawin Samraj, Kristen Hollands, John W. Krakauer, and John Rothwell. "The Strength of the Corticospinal Tract Not the Reticulospinal Tract Determines Upper-Limb Impairment Level and Capacity for Skill-Acquisition in the Sub-Acute Post-Stroke Period." Neurorehabilitation and Neural Repair 35, no. 9 (2021): 812–22. http://dx.doi.org/10.1177/15459683211028243.

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Background. Upper-limb impairment in patients with chronic stroke appears to be partly attributable to an upregulated reticulospinal tract (RST). Here, we assessed whether the impact of corticospinal (CST) and RST connectivity on motor impairment and skill-acquisition differs in sub-acute stroke, using transcranial magnetic stimulation (TMS)–based proxy measures. Methods. Thirty-eight stroke survivors were randomized to either reach training 3-6 weeks post-stroke (plus usual care) or usual care only. At 3, 6 and 12 weeks post-stroke, we measured ipsilesional and contralesional cortical connect

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Kimura, Ikuo, Atsushi Senoo, and Masahiro Abo. "Changes in Structural Neural Networks in the Recovery Process of Motor Paralysis after Stroke." Brain Sciences 14, no. 3 (2024): 197. http://dx.doi.org/10.3390/brainsci14030197.

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In recent years, neurorehabilitation has been actively used to treat motor paralysis after stroke. However, the impacts of rehabilitation on neural networks in the brain remain largely unknown. Therefore, we investigated changes in structural neural networks after rehabilitation therapy in patients who received a combination of low-frequency repetitive transcranial magnetic stimulation (LF-rTMS) and intensive occupational therapy (intensive-OT) as neurorehabilitation. Fugl-Meyer assessment (FMA) for upper extremity (FMA-UE) and Action Research Arm Test (ARAT), both of which reflected upper lim

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Mahmoudi Aqeel-Abadi, Abolfazl, Hamid-Reza Fateh, Saeed Masoudnia, et al. "A Preliminary Study of Alterations in Iron Disposal and Neural Activity in Ischemic Stroke." BioMed Research International 2022 (August 6, 2022): 1–16. http://dx.doi.org/10.1155/2022/4552568.

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Purpose. The study aimed to evaluate the postrehabilitation changes in deep gray matter (DGM) nuclei, corticospinal tract (CST), and motor cortex area, involved in motor tasks in patients with ischemic stroke. Methods. Three patients participated in this study, who had experienced an ischemic stroke on the left side of the brain. They underwent a standard rehabilitation program for four consecutive weeks, including transcranial direct current stimulation (tDCS), neuromuscular electrical stimulation (NMES), and occupational therapy. The patients’ motor ability was evaluated by Fugl-Meyer assess

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Li, Mingfen, Fei Zou, Tingting Zheng, et al. "Electroacupuncture alters brain network functional connectivity in subacute stroke: A randomised crossover trial." Medicine 103, no. 14 (2024): e37686. http://dx.doi.org/10.1097/md.0000000000037686.

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Background: Electroacupuncture (EA) is a promising rehabilitation treatment for upper-limb motor recovery in stroke patients. However, the neurophysiological mechanisms underlying its clinical efficacy remain unclear. This study aimed to explore the immediate modulatory effects of EA on brain network functional connectivity and topological properties. Methods: The randomized, single-blinded, self-controlled two-period crossover trial was conducted among 52 patients with subacute subcortical stroke. These patients were randomly allocated to receive either EA as the initial intervention or sham

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Vatinno, Amanda A., Christian Schranz, Annie N. Simpson, Viswanathan Ramakrishnan, Leonardo Bonilha, and N. J. Seo. "Predicting upper extremity motor improvement following therapy using EEG-based connectivity in chronic stroke." NeuroRehabilitation 50, no. 1 (2022): 105–13. http://dx.doi.org/10.3233/nre-210171.

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BACKGROUND: Uncertain prognosis presents a challenge for therapists in determining the most efficient course of rehabilitation treatment for individual patients. Cortical Sensorimotor network connectivity may have prognostic utility for upper extremity motor improvement because the integrity of the communication within the sensorimotor network forms the basis for neuroplasticity and recovery. OBJECTIVE: To investigate if pre-intervention sensorimotor connectivity predicts post-stroke upper extremity motor improvement following therapy. METHODS: Secondary analysis of a pilot triple-blind random

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Huo, Congcong, Xinglou Li, Jing Jing, et al. "Median Nerve Electrical Stimulation–Induced Changes in Effective Connectivity in Patients With Stroke as Assessed With Functional Near-Infrared Spectroscopy." Neurorehabilitation and Neural Repair 33, no. 12 (2019): 1008–17. http://dx.doi.org/10.1177/1545968319875952.

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Background. The cortical plastic changes in response to median nerve electrical stimulation (MNES) in stroke patients have not been entirely illustrated. Objective. This study aimed to investigate MNES-related changes in effective connectivity (EC) within a cortical network after stroke by using functional near-infrared spectroscopy (fNIRS). Methods. The cerebral oxygenation signals in the bilateral prefrontal cortex (LPFC/RPFC), motor cortex (LMC/RMC), and occipital lobe (LOL/ROL) of 20 stroke patients with right hemiplegia were measured by fNIRS in 2 conditions: (1) resting state and (2) MNE

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Fanini, Alessandra, and Carlo Alberto Marzi. "Unwanted reflex-like saccades in visual extinction patients." Behavioral and Brain Sciences 22, no. 4 (1999): 683. http://dx.doi.org/10.1017/s0140525x99312152.

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We studied patients with left visual extinction following right hemisphere damage in a simple manual reaction time task using brief visual stimuli. With unilateral lateralized stimuli the patients showed a high proportion of unwanted, reflex-like saccades to either side of stimulation. In contrast, with bilateral stimuli there was an overall decrease in the proportion of unwanted saccades, and the vast majority of them were directed toward the ipsilesional side. The implications of these results for the Findlay & Walker model are discussed.

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Li, Mingfen, Su Zheng, Weigeng Zou, Haifeng Li, Chan Wang, and Li Peng. "Electroencephalography-based parietofrontal connectivity modulated by electroacupuncture for predicting upper limb motor recovery in subacute stroke." Medicine 102, no. 36 (2023): e34886. http://dx.doi.org/10.1097/md.0000000000034886.

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Background: Predicting motor recovery in stroke patients is essential for effective rehabilitation planning and goal setting. However, intervention-specific biomarkers for such predictions are limited. This study investigates the potential of electroacupuncture (EA) – induced brain network connectivity as a prognostic biomarker for upper limb motor recovery in stroke. Methods: A randomized crossover and prospective observational study was conducted involving 40 stroke patients within 30 days of onset. Patients underwent both EA and sham electroacupuncture (SEA) interventions. Simultaneously, r

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Lee, Jungsoo, Eunhee Park, Ahee Lee, et al. "Modulating Brain Connectivity by Simultaneous Dual-Mode Stimulation over Bilateral Primary Motor Cortices in Subacute Stroke Patients." Neural Plasticity 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/1458061.

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Repetitive transcranial magnetic stimulation (rTMS) or transcranial direct current stimulation (tDCS) has been used for the modulation of stroke patients’ motor function. Recently, more challenging approaches have been studied. In this study, simultaneous stimulation using both rTMS and tDCS (dual-mode stimulation) over bilateral primary motor cortices (M1s) was investigated to compare its modulatory effects with single rTMS stimulation over the ipsilesional M1 in subacute stroke patients. Twenty-four patients participated; 12 participants were assigned to the dual-mode stimulation group while

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Boddington, Laura J., Jason P. Gray, Jan M. Schulz, and John N. J. Reynolds. "Low-intensity contralesional electrical theta burst stimulation modulates ipsilesional excitability and enhances stroke recovery." Experimental Neurology 323 (January 2020): 113071. http://dx.doi.org/10.1016/j.expneurol.2019.113071.

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Keller, Ingo, Gudrun Lefin-Rank, Judith Lösch, and Georg Kerkhoff. "Combination of Pursuit Eye Movement Training With Prism Adaptation and Arm Movements in Neglect Therapy: A Pilot Study." Neurorehabilitation and Neural Repair 23, no. 1 (2008): 58–66. http://dx.doi.org/10.1177/1545968308317438.

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Objective. The aim of the present study was to determine if a combination of pursuit eye movement training to optokinetic stimulation (OKSP) and prism adaptation leads to greater improvement of neglect symptoms than a single application of OKSP. Additionally, the effect of ipsilesional arm movements during OKSP was tested. Methods. Ten patients with left-sided neglect due to unilateral right-sided vascular brain lesions were studied between 2 and 4.5 months after their stroke. Each patient received 4 different single-session treatments (each lasting 30 minutes): visual scanning treatment (cont

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Cleland, Brice T., and Sangeetha Madhavan. "Ipsilateral Motor Pathways and Transcallosal Inhibition During Lower Limb Movement After Stroke." Neurorehabilitation and Neural Repair 35, no. 4 (2021): 367–78. http://dx.doi.org/10.1177/1545968321999049.

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Background Stroke rehabilitation may be improved with a better understanding of the contribution of ipsilateral motor pathways to the paretic limb and alterations in transcallosal inhibition. Few studies have evaluated these factors during dynamic, bilateral lower limb movements, and it is unclear whether they relate to functional outcomes. Objective Determine if lower limb ipsilateral excitability and transcallosal inhibition after stroke depend on target limb, task, or number of limbs involved, and whether these factors are related to clinical measures. Methods In 29 individuals with stroke,

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Làdavas, Elisabetta, Giuseppe di Pellegrino, Alessandro Farnè, and Gabriele Zeloni. "Neuropsychological Evidence of an Integrated Visuotactile Representation of Peripersonal Space in Humans." Journal of Cognitive Neuroscience 10, no. 5 (1998): 581–89. http://dx.doi.org/10.1162/089892998562988.

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Current interpretations of extinction suggest that the disorder is due to an unbalanced competition between ipsilesional and contralesional representations of space. The question addressed in this study is whether the competition between left and right representations of space in one sensory modality (i.e., touch) can be reduced or exacerbated by the activation of an intact spatial representation in a different modality that is functionally linked to the damaged representation (i.e., vision). This hypothesis was tested in 10 right-hemisphere lesioned patients who suffered from reliable tactile

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Chen, Qing-Mei, Fei-Rong Yao, Hai-Wei Sun, et al. "Combining inhibitory and facilitatory repetitive transcranial magnetic stimulation (rTMS) treatment improves motor function by modulating GABA in acute ischemic stroke patients." Restorative Neurology and Neuroscience 39, no. 6 (2021): 419–34. http://dx.doi.org/10.3233/rnn-211195.

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Background: The combination of inhibitory and facilitatory repetitive transcranial magnetic stimulation (rTMS) can improve motor function of stroke patients with undefined mechanism. It has been demonstrated that rTMS exhibits a neuro-modulatory effect by regulating the major inhibitory neurotransmitter γ-aminobutyric acid (GABA) in other diseases. Objectives: To evaluate the effect of combined inhibitory and facilitatory rTMS on GABA in the primary motor cortex (M1) for treating motor dysfunction after acute ischemic stroke. Methods: 44 ischemic stroke patients with motor dysfunction were ran

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Liepert, Joachim, Simone Zittel, and Cornelius Weiller. "Improvement of dexterity by single session low-frequency repetitive transcranial magnetic stimulation over the contralesional motor cortex in acute stroke: A double-blind placebo-controlled crossover trial." Restorative Neurology and Neuroscience 25, no. 5-6 (2007): 461–65. https://doi.org/10.3233/rnn-2007-00401.

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Purpose: Increasing evidence suggests that the contralesional motor cortex (M1) inhibits the ipsilesional M1 in stroke patients. This inhibition could impair motor function of the affected hand. We investigated if inhibitory 1~Hz repetitive transcranial magnetic stimulation (rTMS) over the contralesional M1 improved motor performance of the affected hand in acute stroke. Methods: A double-blind study of real versus placebo rTMS was conducted. Twelve patients early after subcortical stroke (mean: 7 days) received 1200 stimuli of real and placebo rTMS in a crossover design. The sequence of stimu

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Tseng, Chia-Chen, Shou-Jen Wang, and Yi-Ho Young. "Comparison of Bone-Conducted Vibration for Eliciting Ocular Vestibular-Evoked Myogenic Potentials." Otolaryngology–Head and Neck Surgery 146, no. 2 (2011): 289–94. http://dx.doi.org/10.1177/0194599811425884.

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Objective. This study compared bone-conducted vibration (BCV) stimuli at forehead (Fz) and mastoid sites for eliciting ocular vestibular-evoked myogenic potentials (oVEMPs). Study Design. Prospective study. Setting. University hospital. Methods. Twenty healthy subjects underwent oVEMP testing via BCV stimuli at Fz and mastoid sites. Another 50 patients with unilateral Meniere’s disease also underwent oVEMP testing. Results. All healthy subjects showed clear oVEMPs via BCV stimulation regardless of the tapping sites. The right oVEMPs stimulated by tapping at the right mastoid had earlier nI and

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Zhang, Chengliang, Xiuqin Zheng, Rulan Lu, Wenwei Yun, Huifang Yun, and Xianju Zhou. "Repetitive transcranial magnetic stimulation in combination with neuromuscular electrical stimulation for treatment of post-stroke dysphagia." Journal of International Medical Research 47, no. 2 (2018): 662–72. http://dx.doi.org/10.1177/0300060518807340.

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Objective This study was performed to determine whether repetitive transcranial magnetic stimulation (rTMS) combined with neuromuscular electrical stimulation (NMES) effectively ameliorates dysphagia and how rTMS protocols (bilateral vs. unilateral) combined with NMES can be optimized. Methods Sixty-four patients were randomly divided into four groups using a random distribution table: the sham rTMS plus NMES (Sham-rTMS/NMES), ipsilesional 10-Hz rTMS plus NMES (Ipsi-rTMS/NMES), contralesional 1-Hz rTMS plus NMES (Contra-rTMS/NMES), and bilateral rTMS plus NMES (Bi-rTMS/NMES) groups. Cortical e

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Lee, Minji, Wanjoo Park, Eunhee Park, Soon-Jae Kweon, and Yun-Hee Kim. "Neuromodulation Effect According to Lesion Location After Dual-Mode Brain Stimulation in Patients with Subacute Stroke: A Preliminary Study." Applied Sciences 14, no. 21 (2024): 9636. http://dx.doi.org/10.3390/app14219636.

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Dual-mode non-invasive brain stimulation using repetitive transcranial magnetic stimulation and transcranial direct current stimulation is known to help neurorehabilitation in patients with stroke. However, this neuromodulation effect may vary depending on the lesion location of patients with stroke, and the basis in lesion location for this is insufficient. This study aims to investigate the difference in neuromodulation effectiveness according to the lesion location after dual-mode brain stimulation using electroencephalography signals. Eight patients with ischemic subacute stroke and 11 hea

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Nowak, Dennis A., Christian Grefkes, Mitra Ameli, and Gereon R. Fink. "Interhemispheric Competition After Stroke: Brain Stimulation to Enhance Recovery of Function of the Affected Hand." Neurorehabilitation and Neural Repair 23, no. 7 (2009): 641–56. http://dx.doi.org/10.1177/1545968309336661.

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Background and purpose. Within the concept of interhemispheric competition, technical modulation of the excitability of motor areas in the contralesional and ipsilesional hemisphere has been applied in an attempt to enhance recovery of hand function following stroke. This review critically summarizes the data supporting the use of novel electrophysiological concepts in the rehabilitation of hand function after stroke. Summary of review. Repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS) are powerful tools to inhibit or facilitate cortical exc

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Schuhmann, Michael K., Guido Stoll, Lena Papp, Arne Bohr, Jens Volkmann, and Felix Fluri. "Electrical Stimulation of the Mesencephalic Locomotor Region Has No Impact on Blood–Brain Barrier Alterations after Cerebral Photothrombosis in Rats." International Journal of Molecular Sciences 20, no. 16 (2019): 4036. http://dx.doi.org/10.3390/ijms20164036.

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Blood–brain barrier (BBB) disruption is a critical event after ischemic stroke, which results in edema formation and hemorrhagic transformation of infarcted tissue. BBB dysfunction following stroke is partly mediated by proinflammatory agents. We recently have shown that high frequency stimulation of the mesencephalic locomotor region (MLR-HFS) exerts an antiapoptotic and anti-inflammatory effect in the border zone of cerebral photothrombotic stroke in rats. Whether MLR-HFS also has an impact on BBB dysfunction in the early stage of stroke is unknown. In this study, rats were subjected to phot

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Costa, Vanessa, Giuseppe Giglia, Filippo Brighina, Serena Indovino, and Brigida Fierro. "Ipsilesional and contralesional regions participate in the improvement of poststroke aphasia: a transcranial direct current stimulation study." Neurocase 21, no. 4 (2014): 479–88. http://dx.doi.org/10.1080/13554794.2014.927508.

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Hsu, Ya-Fang, Ying-Zu Huang, Yung-Yang Lin, et al. "Intermittent theta burst stimulation over ipsilesional primary motor cortex of subacute ischemic stroke patients: A pilot study." Brain Stimulation 6, no. 2 (2013): 166–74. http://dx.doi.org/10.1016/j.brs.2012.04.007.

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Cheng, Michelle Y., Shahabeddin Vahdat, Arjun V. Pendharkar, et al. "Abstract 177: Brain-Wide Circuit Dynamics of Post-Stroke Recovery After Optogenetic Stimulation." Stroke 51, Suppl_1 (2020). http://dx.doi.org/10.1161/str.51.suppl_1.177.

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Background: Post-stroke optogenetic stimulations have been shown to promote functional recovery. However, the cellular and circuit mechanisms underlying such recovery remain unclear. Elucidating key neural circuits in post-stroke recovery will be invaluable for translation of neuromodulation for stroke. Here we used optogenetic functional magnetic response imaging (ofMRI) to examine brain-wide circuit dynamics induced by optogenetic stimulation treatment (OST). Method: Male mice expressing channelrhodopsin (ChR2) in ipsilesional M1 (iM1) layer V excitatory neurons were used. ofMRI were perform

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Gao, Jingtian, Helin Wang, Zhouyao Hu, et al. "Investigating the effects of excitatory and inhibitory somatosensory rTMS on somatosensory functioning in the acute and subacute phases of stroke: a preliminary double-blind and randomized trial." Frontiers in Human Neuroscience 18 (September 30, 2024). http://dx.doi.org/10.3389/fnhum.2024.1474212.

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BackgroundRepetitive transcranial magnetic stimulation (rTMS) targeting the primary somatosensory cortex (S1) has a potential effect on somatosensory functioning following a stroke. However, S1-rTMS was combined with peripheral therapies in previous trials. Moreover, these studies have commonly targeted the ipsilesional S1 with excitatory rTMS paradigms.MethodsThis double-blind, randomized trial (registration number: ChiCTR2200059098) investigated two forms of paradigms, that is ipsilesional excitatory and contralesional inhibitory rTMS, as a stand-alone treatment in post-stroke somatosensatio

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Gopalakrishnan, Raghavan, David A. Cunningham, Olivia Hogue, et al. "Electrophysiological correlates of dentate nucleus deep brain stimulation for post-stroke motor recovery." Journal of Neuroscience, May 9, 2024, e2149232024. http://dx.doi.org/10.1523/jneurosci.2149-23.2024.

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While ipsilesional cortical electroencephalography has been associated with post-stroke recovery mechanisms and outcomes, the role of cerebellum and its interaction with the ipsilesional cortex is still largely unknown. We have previously shown that post-stroke motor control relies on increased cortico-cerebellar coherence (CCC) in the low beta band to maintain motor task accuracy and to compensate for decreased excitability of the ipsilesional cortex. We now extend our work to investigate corticocerebellar network changes associated with chronic stimulation of the dentato-thalamo-cortical pat

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Ding, Qian, Songbin Chen, Jixiang Chen, et al. "Intermittent Theta Burst Stimulation Increases Natural Oscillatory Frequency in Ipsilesional Motor Cortex Post-Stroke: A Transcranial Magnetic Stimulation and Electroencephalography Study." Frontiers in Aging Neuroscience 14 (February 7, 2022). http://dx.doi.org/10.3389/fnagi.2022.818340.

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ObjectiveIntermittent theta burst stimulation (iTBS) has been widely used as a neural modulation approach in stroke rehabilitation. Concurrent use of transcranial magnetic stimulation and electroencephalography (TMS-EEG) offers a chance to directly measure cortical reactivity and oscillatory dynamics and allows for investigating neural effects induced by iTBS in all stroke survivors including individuals without recordable MEPs. Here, we used TMS-EEG to investigate aftereffects of iTBS following stroke.MethodsWe studied 22 stroke survivors (age: 65.2 ± 11.4 years; chronicity: 4.1 ± 3.5 months)

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Chiang, Terrance, Shahabeddin Vahdat, Arjun Pendharkar, et al. "Abstract TMP117: Optogenetic Stimulation Effects On Cortico-thalamic Circuit Plasticity After Stroke." Stroke 53, Suppl_1 (2022). http://dx.doi.org/10.1161/str.53.suppl_1.tmp117.

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Introduction: Post-stroke optogenetic stimulation in the ipsilesional primary motor cortex (iM1) can promote functional recovery. Recent brain imaging data indicate that iM1-stimulated stroke mice restore activation of the ipsilesional cortico-thalamic tract. To determine whether iM1 stimulation enhanced post-stroke plasticity in the cortico-thalamic tract, we investigate the expression of plasticity markers in the ipsilesional thalamus (iTH). We selectively stimulate the cortico-thalamic circuit to investigate its influences on plasticity changes and functional outcome. Methods: C57BL6 male m

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Kim, Yun-Hee, Minji Lee, Ahee Lee, Jae Yong Cho, and Won Hyuk Chang. "Abstract W P103: Modulation of Motor Network Activities by Dual-mode Non-invasive Brain Stimulation in Stroke Patients." Stroke 46, suppl_1 (2015). http://dx.doi.org/10.1161/str.46.suppl_1.wp103.

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Objective: Combination of two non-invasive brain stimulation (NBS) modes, repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS), have been tried to enhance motor function in stroke patients. We aimed to investigate the changes of motor network after dual-mode NBS using Electroencephalogram (EEG). Methods: Seven subacute ischemic stroke patients (mean age of 60.6 years; 4 males) and 8 healthy controls (mean age of 29.3 years; 4 males) participated. Participants received simultaneous application of 2mA cathodal tDCS over contralesional M1 and 10 H

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Tohyama, Takamichi, Kunitsugu Kondo, and Yohei Otaka. "Effects of Galvanic Vestibular Stimulation on Visual Verticality and Standing Posture Differ Based on the Polarity of the Stimulation and Hemispheric Lesion Side in Patients With Stroke." Frontiers in Neurology 12 (November 11, 2021). http://dx.doi.org/10.3389/fneur.2021.768663.

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Introduction: There is growing evidence supporting the relationship of vertical misperception and poor balance control with asymmetrical standing posture in patients with stroke. Although the vestibular system has been shown to be responsible for vertical misperception and balance disorders, the effect of galvanic vestibular stimulation (GVS) on both vertical misperception and postural asymmetry after stroke remains elusive. The aim of this study was to investigate the effects of GVS on visual verticality and postural asymmetry after stroke and to clarify whether the effects differ depending o

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Bai, Zhongfei, Jack Jiaqi Zhang, and Kenneth N. K. Fong. "Intracortical and intercortical networks in patients after stroke: a concurrent TMS-EEG study." Journal of NeuroEngineering and Rehabilitation 20, no. 1 (2023). http://dx.doi.org/10.1186/s12984-023-01223-7.

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Abstract Background Concurrent transcranial magnetic stimulation and electroencephalography (TMS-EEG) recording provides information on both intracortical reorganization and networking, and that information could yield new insights into post-stroke neuroplasticity. However, a comprehensive investigation using both concurrent TMS-EEG and motor-evoked potential-based outcomes has not been carried out in patients with chronic stroke. Therefore, this study sought to investigate the intracortical and network neurophysiological features of patients with chronic stroke, using concurrent TMS-EEG and m

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Mickle, Alyssa, Richard Coffey, Natale Hall, Jesús Peñaloza, and Erica Dale. "Closed-loop electrical epidural stimulation restores ipsilesional in-phase diaphragm activity in spontaneously breathing rats after acute C2-hemisection." Physiology 38, S1 (2023). http://dx.doi.org/10.1152/physiol.2023.38.s1.5732731.

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Epidural electrical stimulation has great promise for recovering many functions after spinal cord injury, including breathing. High-frequency stimulation of the thoracic [DiMarco and Kowalski, 2009] and cervical cord [Gonzalez-Rothi et al. 2017] recovers some phrenic and diaphragm activity. However, open-loop stimulation paradigms induce tonic activity and, thus far, have not elicited recovery of breathing function independent of the stimulation period. We have shown in C2-hemisected rats, closed-loop epidural stimulation (CLES; paced from contralateral diaphragm EMG activity) increases excita

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