Article
Neurosciences
Ole Numssen, Anna-Leah Zier, Axel Thielscher, Gesa Hartwigsen, Thomas R. Knosche, Konstantin Weise
Summary: Transcranial magnetic stimulation (TMS) is a useful tool for studying causal structure-function relationships in the human brain, but the complex distribution of induced electric fields makes it challenging to precisely identify the stimulated neuronal populations. This study proposes a method to rapidly and feasibly localize cortical regions at the individual subject level by combining experimental data and numerically modeled fields. By establishing a functional link between the induced electric field and the modulated effect, the research demonstrates a fundamental step towards fully exploiting the potential of TMS for practical and clinical applications.
Article
Neurosciences
S. N. Makarov, W. A. Wartman, G. M. Noetscher, K. Fujimoto, T. Zaidi, E. H. Burnham, M. Daneshzand, A. Nummenmaa
Summary: The optimized TMS inverse problem solutions improve the focality of the electric field induced by TMS and reduce the size of the field hot spot near the target. Additionally, uncertainties in coil position/orientation, conductivity, and head segmentation accuracy affect the performance of TMS-IP.
Review
Cell Biology
M. Garcia-Pallero, Diana Cardona, Lola Rueda-Ruzafa, Miguel Rodriguez-Arrastia, Pablo Roman
Summary: Phantom limb pain is a difficult-to-treat chronic pain syndrome. Neurostimulation treatment shows potential as an effective option, although more research evidence is needed. Repetitive transcranial magnetic stimulation and transcranial direct current stimulation have been found to be effective in reducing pain perception and relieving anxiety and depression symptoms in phantom limb pain patients.
NEURAL REGENERATION RESEARCH
(2022)
Review
Neurosciences
Danny Adrian Spampinato, Jaime Ibanez, Lorenzo Rocchi, John Rothwell
Summary: Transcranial magnetic stimulation (TMS) is a non-invasive technique used to study the human brain. One outcome measure of TMS is the motor-evoked potential (MEP), which estimates changes in corticospinal excitability. This article summarizes the neural pathways and circuits contributing to MEP generation, discusses factors to consider when interpreting MEP amplitude in motor processing and neurological conditions, and explores how emerging technologies can enhance understanding of neural substrates influencing MEPs.
JOURNAL OF PHYSIOLOGY-LONDON
(2023)
Article
Pharmacology & Pharmacy
Shane M. Fresnoza, Giorgi Batsikadze, Lynn Elena Mueller, Constanze Rost, Michael Chamoun, Walter Paulus, Min-Fang Kuo, Michael A. Nitsche
Summary: Dopamine plays a crucial role in neuroplasticity and has dosage-dependent effects on motor cortex plasticity. Different dosages of dopamine precursor such as L-DOPA can either impair, abolish, preserve, or reverse plasticity in healthy individuals. Similarly, selective D1-like and D2-like receptor activation has excitatory and inhibitory effects on plasticity. However, the effects of nonselective dopamine agonists like apomorphine on plasticity have not been extensively explored in humans.
Article
Neurosciences
Aman S. Aberra, Adrian Lopez, Warren M. Grill, Angel V. Peterchev
Summary: This study developed computationally efficient estimators to predict the activation thresholds of cortical neurons in response to TMS-induced electric fields. The use of 3D convolutional neural networks allowed for accurate and rapid estimation of threshold values, enabling simulations of large neuron populations or parameter space exploration on personal computers.
Article
Clinical Neurology
Emmanuelle Wilhelm, Caroline Quoilin, Gerard Derosiere, Susana Paco, Anne Jeanjean, Julie Duque
Summary: In Parkinson's disease, the lack of preparatory suppression in the primary motor cortex is associated with motor slowness and is related to disease duration and motor impairment. This finding suggests a potential marker for assessing motor preparation and impairment in Parkinson's disease.
MOVEMENT DISORDERS
(2022)
Article
Clinical Neurology
Mohd Faizal Mohd Zulkifly, Ornela Merkohitaj, Juergen Brockmoeller, Walter Paulus
Summary: The study investigated the impact of caffeine on brain plasticity and found that it increased motor cortex excitability in caffeine-naive subjects, enhanced PAS 25 effects, and affected alertness and motor evoked potentials under light deprivation. Time of day had no effect on tACS-induced plasticity in caffeine consumers.
CLINICAL NEUROPHYSIOLOGY
(2021)
Article
Clinical Neurology
Yu-Ting Hu, Xi-Wen Hu, Jin-Fang Han, Jian-Feng Zhang, Ying-Ying Wang, Annemarie Wolff, Sara Tremblay, Dusan Hirjak, Zhong-Lin Tan, Georg Northoff
Summary: This study compared the therapeutic efficacy of rTMS at the left motor cortex (lMC) and left dorsolateral prefrontal cortex (lDLPFC) in MDD patients. The results showed no significant difference in treatment outcomes and tolerability between the two groups. The findings suggest that lMC can be a potential and easily accessible rTMS target.
JOURNAL OF AFFECTIVE DISORDERS
(2024)
Article
Neurosciences
Zsolt Turi, Nicholas Hananeia, Sina Shirinpour, Alexander Opitz, Peter Jedlicka, Andreas Vlachos
Summary: This study explored the effects of TMS in different cortical regions using multi-scale computational modeling and highlighted the limitations of conventional intensity selection methods. Personalized stimulation intensity selection could standardize the effects of TMS.
FRONTIERS IN NEUROSCIENCE
(2022)
Review
Neurosciences
Fiorenzo Moscatelli, Antonietta Messina, Anna Valenzano, Vincenzo Monda, Monica Salerno, Francesco Sessa, Ester La Torre, Domenico Tafuri, Alessia Scarinci, Michela Perrella, Gabriella Marsala, Marcellino Monda, Giuseppe Cibelli, Chiara Porro, Giovanni Messina
Summary: Transcranial magnetic stimulation, introduced in 1985, has provided important innovations in the study of cortical excitability, allowing for in-depth exploration of motor activation and control, as well as investigating acute and chronic responses in the motor cortex in sport science. This technique can enhance cortical excitability, facilitate the learning process, and is considered a principal strategy for acquiring motor skills in training settings.
Article
Neurosciences
Melina Engelhardt, Jana Kimmel, Giovanni Raffa, Alfredo Conti, Thomas Picht
Summary: The study demonstrates that accelerated low-frequency rTMS is a safe and feasible method for stimulating the motor cortex, and may make rTMS protocols more accessible to patients.
FRONTIERS IN NEUROSCIENCE
(2022)
Article
Multidisciplinary Sciences
Kevin A. Caulfield, Mark S. George
Summary: This study systematically investigated the cortical effects of conventional and novel tDCS electrode montages using electric field modeling. The novel APPS-tDCS method was found to produce stronger and more focal cortical stimulation intensities, with potential for larger and more consistent therapeutic effects in the future.
SCIENTIFIC REPORTS
(2022)
Article
Rehabilitation
Yan Gong, Xian-Ming Long, Ying Xu, Xiu-Ying Cai, Ming Ye
Summary: The study demonstrated that 1Hz rTMS combined with anodal tDCS stimulation protocol showed significant effects on motor function and cortex excitability in subacute stroke patients, making it a potential preferred rehabilitative strategy for motor recovery.
CLINICAL REHABILITATION
(2021)
Article
Multidisciplinary Sciences
Akiyoshi Matsugi, Satoru Nishishita, Kyota Bando, Yutaka Kikuchi, Keigo Tsujimoto, Yuto Tanabe, Naoki Yoshida, Hiroaki Tanaka, Shinya Douchi, Takeru Honda, Masato Odagaki, Hideki Nakano, Yohei Okada, Nobuhiko Mori, Koichi Hosomi
Summary: This study aimed to investigate abnormalities in inhibitory cortical excitability and motor control during ballistic-targeting movements in individuals with degenerative cerebellar ataxia (DCA). The results indicated that individuals with DCA showed longer cortical silent period (cSP), suggesting excessive activity in the inhibitory cortical circuit. However, this increase in inhibitory activity did not contribute to the control of ballistic-targeting movements and did not correlate with the severity of ataxia. These findings contribute to our understanding of motor control abnormalities in people with DCA and provide potential evidence for further research in this area.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Biomedical
Boshuo Wang, James D. Weiland
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2016)
Article
Biophysics
Boshuo Wang, Warren M. Grill, Angel V. Peterchev
BIOPHYSICAL JOURNAL
(2018)
Article
Engineering, Biomedical
Boshuo Wang, Michael R. Shen, Zhi-De Deng, J. Evan Smith, Joseph J. Tharayil, Clement J. Gurrey, Luis J. Gomez, Angel V. Peterchev
JOURNAL OF NEURAL ENGINEERING
(2018)
Correction
Engineering, Biomedical
Boshuo Wang, Aman S. Aberra, Warren M. Grill, Angel V. Peterchev
JOURNAL OF NEURAL ENGINEERING
(2018)
Article
Engineering, Biomedical
Boshuo Wang, Aman S. Aberra, Warren M. Grill, Angel V. Peterchev
JOURNAL OF NEURAL ENGINEERING
(2018)
Article
Clinical Neurology
Stefan M. Goetz, Bryan Howell, Boshuo Wang, Zhongxi Li, Marc A. Sommer, Angel Peterchev, Warren M. Grill
Summary: The study investigates the variability in cortical stimulation and handheld transcranial magnetic stimulation (TMS) coils. By using deep brain electrical stimulation (DBS) to bypass the cortex, the study shows similar fluctuations in excitability despite eliminating coil position variability, suggesting a spinal origin of the variability.
CLINICAL NEUROPHYSIOLOGY
(2022)
Article
Engineering, Biomedical
Boshuo Wang, Zhongxi Li, Charles Sebesta, Daniel Torres Hinojosa, Qingbo Zhang, Jacob T. Robinson, Gang Bao, Angel Peterchev, Stefan M. Goetz
Summary: This study introduces a hybrid system of power electronics and magnetic nanoparticles for frequency-multiplexed magnetothermal-neurostimulation. By multiplexing three independent channels, the system achieves rapid switching between a wide frequency range, demonstrating high efficiency and fast switching capabilities.
JOURNAL OF NEURAL ENGINEERING
(2022)
Article
Engineering, Biomedical
Joshua C. Chen, Peter Kan, Zhanghao Yu, Fatima Alrashdan, Roberto Garcia, Amanda Singer, C. S. Edwin Lai, Ben Avants, Scott Crosby, Zhongxi Li, Boshuo Wang, Michelle M. Felicella, Ariadna Robledo, Angel Peterchev, Stefan M. Goetz, Jeffrey D. Hartgerink, Sunil A. Sheth, Kaiyuan Yang, Jacob T. Robinson
Summary: Researchers have developed an endovascular wireless and battery-free millimetric implant for stimulating peripheral nerves that are difficult to reach via traditional surgeries. This device can be delivered through a percutaneous catheter and uses magnetoelectric materials for wireless stimulation.
NATURE BIOMEDICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Charles Sebesta, Daniel Torres Hinojosa, Boshuo Wang, Joseph Asfouri, Zhongxi Li, Guillaume Duret, Kaiyi Jiang, Zhen Xiao, Linlin Zhang, Qingbo Zhang, Vicki L. Colvin, Stefan M. Goetz, Angel V. Peterchev, Herman A. Dierick, Gang Bao, Jacob T. Robinson
Summary: The authors describe a method for remote magnetothermal stimulation of neurons in fruit flies, achieving subsecond behavioral responses by combining magnetic nanoparticles with a thermoreceptor. By tuning the properties of magnetic nanoparticles, multichannel thermal magnetogenetic stimulation can be achieved. This technique allows precise activation of targeted cells, enabling the study of neural circuits and cell-based therapies. It offers a non-invasive and deep-tissue method for remote control of cell activity, bringing magnetogenetics closer to the temporal resolution and multiplexed stimulation achieved with optogenetics.
Article
Engineering, Biomedical
Boshuo Wang, Aman S. Aberra, Warren M. Grill, Angel Peterchev
Summary: This study simulated the electric field and neural response characteristics of temporal interference stimulation (TIS) and found that TIS has similar activation thresholds to high-frequency stimulation but is more effective at block. The suprathreshold effects of TIS may involve neural activity block and periodic activation or onset response.
JOURNAL OF NEURAL ENGINEERING
(2022)
Article
Engineering, Biomedical
Boshuo Wang, Jinshui Zhang, Zhongxi Li, Warren M. Grill, Angel Peterchev, Stefan M. Goetz
Summary: This study developed a stimulation waveform that retains the characteristics of monophasic TMS but significantly reduces coil heating. The optimized waveforms produced 12%-75% less heating than the original monophasic pulse. These findings have important implications for enabling rapid-rate monophasic TMS protocols.
JOURNAL OF NEURAL ENGINEERING
(2023)
Article
Engineering, Biomedical
Boshuo Wang, Angel Peterchev, Stefan M. Goetz
Summary: This study analyzed different methods for obtaining TMS motor threshold, including relative-frequency methods, adaptive methods, and stochastic root-finding methods. The results showed that the conventional relative-frequency methods had large errors, while the parametric estimation and stochastic root-finding methods performed better in terms of accuracy and simplicity.
JOURNAL OF NEURAL ENGINEERING
(2023)
Proceedings Paper
Engineering, Biomedical
Boshuo Wang, James D. Weiland
2015 37TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC)
(2015)
Meeting Abstract
Ophthalmology
Boshuo Wang, James D. Weiland
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2015)