Brain Stimulation

Response to: Brain injury during focused ultrasound neuromodulation for substance use disorder
Fouragnan E
Reducing target E-field variability in repetitive TMS through online motion compensation
Grosshagauer S, Woletz M, Becher M, Björklund J, Padberg F, Keeser D, Bulubas L and Windischberger C
Precise targeting and dosing are critical for neurophysiological effectivity of repetitive transcranial magnetic stimulation (rTMS), particularly in clinical applications such as treating major depressive disorder (MDD). While neuronavigation enables accurate, individualized coil positioning, even small deviations in coil placement, e.g. during extended stimulation protocols, can significantly alter the induced electric field (E-field). In this study, we use continuous neuronavigational monitoring during stimulation to quantify motion-induced E-field variability at the target and introduce a novel methodology for compensating it.
Time-dependent effect of left posterolateral cerebellar TMS in facial emotional processing
Paternò S, Ciricugno A, Cattaneo Z and Ferrari C
A Novel Interleaved TMS-MRS Approach with Standard MRI Hardware
Vasileiadi M, Pople CB, Truong P, Davidson B, Hamani C, Giacobbe P, Lipsman N, Tik M, Near J and Nestor SM
Interleaved TMS-fMRI has advanced understanding of network modulation but is limited to hemodynamic measures. We introduce a novel interleaved TMS-MRS platform, using standard MRI hardware, to assess real-time neurochemical changes and demonstrate feasibility in a clinical sample of patients with treatment-resistant depression (TRD).
dsGrid: a dual-site TMS grid-search method for personalized targeting of motor network connectivity
Deluisi JA, Goldenkoff ER, Lee TG, Brissenden JA, Taylor SF, Polk TA, Wittenberg GF and Vesia M
Brain targets for transcranial magnetic stimulation (TMS) are often derived from anatomical landmarks or group-level neuroimaging data, which lack precision or personalization, contributing to the variability in TMS responses. Personalized functional magnetic resonance imaging (fMRI) may improve accuracy but remains resource-intensive and not widely accessible.
Timing the Dialogue: What the 100-ms Hippocampo-Cortical Lag Tells Us about Memory-Informed Neuromodulation
Wu W, Li N and Zhang H
Neurophysiological correlates of spaced transcranial direct current stimulation in treatment-resistant depression: A case report
Poorganji M, Daniels H, Lochhead L, Kohn J, Li X, Sun Y, Weissman CR, Appelbaum LG, Daskalakis ZJ and Miron JP
Open letter on intervention regimes and adverse events in focused ultrasound for neuromodulation
Klein-Flugge MC, Airan RD, Attali D, Aubry JF, Bubrick EJ, Caskey CF, Cleveland RO, Fouragnan EF, Jones RM, Khokhlova TD, Kubanek J, Lea-Banks H, Legon W, McDannold N, Murphy KR, Osada T, Pauly KB, Pichardo S, Sallet J, Sun L, Treeby BE, Zheng H, Martin E and Verhagen L
Modulation of emotional memory in depression: Concurrent fMRI-guided rTMS over OFA during sad face viewing
Wei H, Wang Q, Su W, Li P, Yuan K, Deng J, Zhang Z, Zwanzger P, Lin X and Lu L
Assessment of different focused ultrasound transducers for neuromodulatory targeting of motor thalamus
Arantes AP, He Y, Coreas A, Rockel CP, Clark DL, Pichardo S, Pike GB and Kiss ZHT
Simulation of evoked responses to transcranial magnetic stimulation using a multiscale cortical circuit model
Zhao Z, Aberra AS and Opitz A
Transcranial magnetic stimulation (TMS) is a widely used non-invasive brain stimulation technique, but the neural circuits activated by TMS remain poorly understood. Previous modeling approaches have been limited to either simplified point-neuron networks or isolated single-cell models that lack synaptic connectivity.
Modulating cerebrospinal fluid dynamics using pulsed photobiomodulation
Motsenyat A, Zhong XZ, Van Lankveld H, Chen JX, Mathew A and Chen JJ
The use of photobiomodulation (PBM) to enhance brain health, specifically glymphatic drainage and thus neurotoxic waste clearance, may make it a promising therapeutic tool against neurodegenerative diseases such as Alzheimer's disease.
DLPFC TMS suppresses high-frequency neural activity in the human sgACC
Solomon EA, Hassan U, Trapp NT, Boes AD and Keller CJ
Theta-paced stimulation of the thalamic nucleus reuniens entrains mPFC-HPC oscillations and facilitates the acquisition of extinction memories
Tuna T, Mourão FAG and Maren S
The nucleus reuniens (RE) is a midline thalamic nucleus interconnecting the medial prefrontal cortex (mPFC) and the hippocampus (HPC), structures known to be involved in aversive memory processes. Recent work indicates that the RE plays a critical role in the acquisition and retrieval of fear extinction memories. Functional inactivation of the RE impairs both mPFC-HPC coherence and extinction memory. Here we examine whether imposing theta activity on the RE entrains oscillations in the mPFC and HPC and facilitates extinction learning.
Inter-pulse interval and motor evoked potential variability: Bridging insights from healthy adults to post-stroke TMS protocols
Spiro E, Zhu L, Huang Z, Ikramuddin S, Peterchev AV, Charalambous CC and Feng W
Effectiveness of transcranial magnetic stimulation for posttraumatic stress disorder: A multisite, propensity-matched cohort study of treatment parameters
Berlow YA, Cilli SL, Kozel FA, Zandvakili A, Marcotullio N, Cosmo C, Goldberg MA, Wicklund BD, Madore MR and Philip NS
Transcranial magnetic stimulation (TMS) is increasingly used off-label for posttraumatic stress disorder (PTSD), often applying protocols developed for depression. While prior studies suggest high-frequency TMS can improve PTSD symptoms, few have been adequately powered to compare protocols. We examined whether three common TMS protocols yield equivalent outcomes for PTSD in a large, multisite cohort of veterans.
Depression relief from cranial nerve stimulation tracked with decreased prefrontal alpha power and connectivity similar to prefrontal stimulation: an exploratory analysis
Riddle J, Tirrell E, Hindley L, Leuchter AF, Frohlich F and Carpenter LL
Theta-burst intermittent deep brain stimulation (iDBS) in childhood-onset genetic dystonia
Minacapilli E, Levi V, Spagarino A, Zibordi F, Danti FR, Zorzi G and Graziola F
Comprehensive map of axonal pathway activation as a function of subthalamic deep brain stimulation location and parameter settings
Frankemolle-Gilbert AM, Noecker AM, Heida T and McIntyre CC
Deep brain stimulation (DBS) of the subthalamic region is an established therapy for the treatment of Parkinson's disease (PD). Computational models of subthalamic DBS are commonly used in the clinical literature to estimate the brain connections activated by the stimulus. However, those analyses are typically performed with simplified DBS modeling methods. As subthalamic DBS research evolves, there is a need for more advanced modeling results.
Engineering focused ultrasound for glioblastoma
Bell MS, Walton CM, Williams MJ, Eckert T, Brown JC, Rowland NC, Sahin O and Strickland BA
Focused ultrasound (FUS) is a rapidly advancing noninvasive energy delivery technology with the capacity to precisely modulate the tumor microenvironment (TME) through acoustic waves. Glioblastoma (GBM) is characterized by profound TME immune suppression and treatment resistance and has emerged as a key subject to treatment with FUS therapy.
An in vivo model for transcranial direct current stimulation of the motor cortex in awake mice
Sánchez-León CA, Reyes-Velasquez PA, van Thriel C and Nitsche MA
Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique mainly used in humans, in which weak direct currents are applied over the scalp to alter cortical excitability and induce neuroplasticity. Previous studies have demonstrated the value of tDCS for modulating sensory, motor, and cognitive functions, nevertheless, knowledge about how externally applied electric fields affect different components of neuronal networks is still incomplete, and in vivo animal models, which are required for a deeper understanding, are not fully developed. To evaluate the impact of tDCS on cortical excitability, many human experiments assess motor evoked potentials elicited by motor cortex (M1) stimulation.