The impact of transcranial magnetic stimulation on cognitive processing: an event-related potential study

Neuroreport ◽  
2001 ◽  
Vol 12 (13) ◽  
pp. 2915-2918 ◽  
Author(s):  
Stefan Evers ◽  
Iris Böckermann ◽  
Peter W. Nyhuis
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Cognitive Processing ◽  
Magnetic Stimulation ◽  
Event Related Potential ◽  
Potential Study ◽  
The Impact

The impact of stroke on cognitive processing — A prospective event-related potential study

2014 ◽  
Vol 339 (1-2) ◽  
pp. 157-163 ◽  
Author(s):  
Leandra Stahlhut ◽  
Karl-Heinz Grotemeyer ◽  
Ingo-W. Husstedt ◽  
Stefan Evers
Keyword(s):  
Cognitive Processing ◽  
Event Related Potential ◽  
Potential Study ◽  
The Impact

scholarly journals Transcranial Magnetic Stimulation as a Tool to Investigate Motor Cortex Excitability in Sport

2021 ◽  
Vol 11 (4) ◽  
pp. 432
Author(s):  
Fiorenzo Moscatelli ◽  
Antonietta Messina ◽  
Anna Valenzano ◽  
Vincenzo Monda ◽  
Monica Salerno ◽  
...  
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Magnetic Stimulation ◽  
Motor Coordination ◽  
Cortical Excitability ◽  
Non Invasive ◽  
Motor Cortex Excitability ◽  
Invasive Method ◽  
And Control ◽  
The Impact

Transcranial magnetic stimulation, since its introduction in 1985, has brought important innovations to the study of cortical excitability as it is a non-invasive method and, therefore, can be used both in healthy and sick subjects. Since the introduction of this cortical stimulation technique, it has been possible to deepen the neurophysiological aspects of motor activation and control. In this narrative review, we want to provide a brief overview regarding TMS as a tool to investigate changes in cortex excitability in athletes and highlight how this tool can be used to investigate the acute and chronic responses of the motor cortex in sport science. The parameters that could be used for the evaluation of cortical excitability and the relative relationship with motor coordination and muscle fatigue, will be also analyzed. Repetitive physical training is generally considered as a principal strategy for acquiring a motor skill, and this process can elicit cortical motor representational changes referred to as use-dependent plasticity. In training settings, physical practice combined with the observation of target movements can enhance cortical excitability and facilitate the process of learning. The data to date suggest that TMS is a valid technique to investigate the changes in motor cortex excitability in trained and untrained subjects. Recently, interest in the possible ergogenic effect of non-invasive brain stimulation in sport is growing and therefore in the future it could be useful to conduct new experiments to evaluate the impact on learning and motor performance of these techniques.

scholarly journals Antiepileptic Efficacy and Network Connectivity Modulation of Repetitive Transcranial Magnetic Stimulation by Vertex Suppression

2021 ◽  
Vol 15 ◽  
Author(s):  
Cong Fu ◽  
Aikedan Aisikaer ◽  
Zhijuan Chen ◽  
Qing Yu ◽  
Jianzhong Yin ◽  
...  
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Seizure Frequency ◽  
Magnetic Stimulation ◽  
Repetitive Transcranial Magnetic Stimulation ◽  
Reduction Rate ◽  
Network Connectivity ◽  
Hamilton Depression Scale ◽  
Depression And Anxiety ◽  
Epileptiform Discharges ◽  
The Impact

A core feature of drug-resistant epilepsy is hyperexcitability in the motor cortex, and low-frequency repetitive transcranial magnetic stimulation (rTMS) is a suitable treatment for seizures. However, the antiepileptic effect causing network reorganization has rarely been studied. Here, we assessed the impact of rTMS on functional network connectivity (FNC) in resting functional networks (RSNs) and their relation to treatment response. Fourteen patients with medically intractable epilepsy received inhibitive rTMS with a figure-of-eight coil over the vertex for 10 days spread across two weeks. We designed a 6-week follow-up phase divided into four time points to investigate FNC and rTMS-induced timing-dependent plasticity, such as seizure frequency and abnormal interictal discharges on electroencephalography (EEG). For psychiatric comorbidities, the Hamilton Depression Scale (HAM-D) and the Hamilton Anxiety Scale (HAM-A) were applied to measure depression and anxiety before and after rTMS. FNC was also compared to that of a cohort of 17 healthy control subjects. The after-effects of rTMS included all subjects that achieved the significant decrease rate of more than 50% in interictal epileptiform discharges and seizure frequency, 12 (14) patients with the reduction rate above 50% compared to the baseline, as well as emotional improvements in depression and anxiety (p < 0.05). In the analysis of RSNs, we found a higher synchronization between the sensorimotor network (SMN) and posterior default-mode network (pDMN) in epileptic patients than in healthy controls. In contrast to pre-rTMS, the results demonstrated a weaker FNC between the anterior DMN (aDMN) and SMN after rTMS, while the FNC between the aDMN and dorsal attention network (DAN) was greater (p < 0.05, FDR corrected). Importantly, the depressive score was anticorrelated with the FNC of the aDMN-SMN (r = −0.67, p = 0.0022), which was markedly different in the good and bad response groups treated with rTMS (p = 0.0115). Based on the vertex suppression by rTMS, it is possible to achieve temporary clinical efficacy by modulating network reorganization in the DMN and SMN for patients with refractory epilepsy.

scholarly journals The impact of transcranial magnetic stimulation on diagnostic confidence in patients with Alzheimer disease

2018 ◽  
Vol 10 (1) ◽  
Author(s):  
Alberto Benussi ◽  
Antonella Alberici ◽  
Clarissa Ferrari ◽  
Valentina Cantoni ◽  
Valentina Dell’Era ◽  
...  
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Alzheimer Disease ◽  
Magnetic Stimulation ◽  
Diagnostic Confidence ◽  
The Impact

Role of d-serine in the beneficial effects of repetitive transcranial magnetic stimulation in post-stroke patients

2020 ◽  
Vol 32 (3) ◽  
pp. 128-134 ◽  
Author(s):  
Masachika Niimi ◽  
Yuko Fujita ◽  
Tamaki Ishima ◽  
Kenji Hashimoto ◽  
Nobuyuki Sasaki ◽  
...  
Keyword(s):  
Amino Acids ◽  
Transcranial Magnetic Stimulation ◽  
Magnetic Stimulation ◽  
Repetitive Transcranial Magnetic Stimulation ◽  
Stroke Patients ◽  
Post Stroke ◽  
Beneficial Effects ◽  
Depressed Patients ◽  
Before And After ◽  
The Impact

AbstractObjective:Abnormalities in neurotransmission via N-methyl-d-aspartic acid receptor (NMDAR) play a role in the pathophysiology of neuropsychiatric disorders. The impact of repetitive transcranial magnetic stimulation (rTMS) on NMDAR-related amino acids remains unknown. We aim to investigate the effects of rTMS on NMDAR-related amino acids in serum of post-stroke patients.Methods:Ninety-five consecutive post-stroke patients with upper limb hemiparesis were recruited. In 27 patients, the Beck Depression Inventory (BDI) score was 10 or higher. Twelve depressed patients underwent rehabilitation in combination with rTMS and 15 non-depressed patients underwent rehabilitation only without rTMS for 14 days. 1 Hz rTMS was applied to the primary motor area in the non-lesional hemisphere. BDI was conducted before and after treatment. Serum glutamine, glutamate, glycine, l-serine, and d-serine levels were measured before and after treatment.Results:There were no differences between depressed patients and non-depressed patients in clinical characteristics, levels of the five amino acids in serum, and the ratio of amino acids. However, in 27 depressed patients, there was a significant correlation between levels of glutamate in serum and BDI (ρ = 0.428, p = 0.026). BDI decreased significantly in depressed patients after treatment with or without rTMS. d-serine decreased in the rehabilitation with rTMS group, but increased in the rehabilitation without rTMS group. l-serine increased in the rehabilitation with rTMS group, but decreased in the rehabilitation without rTMS group.Conclusion:The results suggest that rTMS can modulate NMDAR-related amino acids in blood, producing beneficial effects.

scholarly journals The impact of social comparison on the neural substrates of reward processing: An event-related potential study

NeuroImage ◽  
2010 ◽  
Vol 49 (1) ◽  
pp. 956-962 ◽  
Author(s):  
Jiang Qiu ◽  
Caiyun Yu ◽  
Hong Li ◽  
Jerwen Jou ◽  
Shen Tu ◽  
...  
Keyword(s):  
Social Comparison ◽  
Neural Substrates ◽  
Reward Processing ◽  
Event Related Potential ◽  
Potential Study ◽  
The Impact

Tms in Migraine

2012 ◽  
Author(s):  
Jean Schoenen ◽  
Valentin Bohotin ◽  
Alain Maertens De Noordhout
Keyword(s):  
Cerebral Cortex ◽  
Visual Cortex ◽  
Transcranial Magnetic Stimulation ◽  
Magnetic Stimulation ◽  
Event Related Potential ◽  
Visual Cortices ◽  
Multidisciplinary Studies ◽  
Migraine Pathophysiology ◽  
Cortical Dysfunction

Transcranial magnetic stimulation (TMS) has been used to search for cortical dysfunction in migraine. Both, the motor and the visual cortices have been explored in this area. This article reviews and discusses the results of the various studies performed in migraine patients with TMS of motor or visual cortices. The majority of evoked and event-related potential studies in migraine have shown two abnormalities: increased amplitude of grand averaged responses and lack of habituation in successive blocks of averaged responses with decreased amplitude in the first block. These abnormalities suggest that the excitability state of the cerebral cortex, particularly of the visual cortex, is abnormal in migraineurs between attacks. The use of TMS to assess motor and visual cortex excitability has yielded conflicting results, which could be due to methodological differences. Taken together, all studies indicate that the changes in cortical reactivity are more complex in migraineurs than initially thought and suggest that both larger multidisciplinary studies and focused analyses of subgroups of patients with more refined clinical phenotypes are necessary to disentangle the role of the cerebral cortex in migraine pathophysiology.

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