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Clinical Applications of Somatosensory Evoked Potentials

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Functional Connectivity Evoked by Orofacial Tactile Perception of Velocity.

Yingying Wang, Fatima Sibaii, Rebecca Custead, Hyuntaek Oh, Steven M Barlow,

The cortical representations of orofacial pneumotactile stimulation involve complex neuronal networks, which are still unknown. This study aims to identify the characteristics of functional connectivity (FC) evoked by three different saltatory velocities over the perioral and buccal surface of the lower face using functional magnetic resonance imaging in twenty neurotypical ... Read more >>

Front Neurosci (Frontiers in Neuroscience)
[2020, 14:182]

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Changes in neurological and pathological outcomes in a modified rat spinal cord injury model with closed canal.

Xin Sun, Xing-Zhen Liu, Jia Wang, Hai-Rong Tao, Tong Zhu, Wen-Jie Jin, Kang-Ping Shen,

Most animal spinal cord injury models involve a laminectomy, such as the weight drop model or the transection model. However, in clinical practice, many patients undergo spinal cord injury while maintaining a relatively complete spinal canal. Thus, open spinal cord injury models often do not simulate real injuries, and few ... Read more >>

Neural Regen Res (Neural regeneration research)
[2020, 15(4):697-704]

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Carbon Monoxide Exerts Functional Neuroprotection After Cardiac Arrest Using Extracorporeal Resuscitation in Pigs.

Jakob Wollborn, Christoph Steiger, Soroush Doostkam, Nils Schallner, Nils Schroeter, Fabian A Kari, Lorenz Meinel, Hartmut Buerkle, Martin A Schick, Ulrich Goebel,

OBJECTIVES:Neurologic damage following cardiac arrest remains a major burden for modern resuscitation medicine. Cardiopulmonary resuscitation with extracorporeal circulatory support holds the potential to reduce morbidity and mortality. Furthermore, the endogenous gasotransmitter carbon monoxide attracts attention in reducing cerebral injury. We hypothesize that extracorporeal resuscitation with additional carbon monoxide application reduces ... Read more >>

Crit. Care Med. (Critical care medicine)
[2020, 48(4):e299-e307]

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Somatosensory evoked fields predict response to vagus nerve stimulation.

Karim Mithani, Simeon M Wong, Mirriam Mikhail, Haatef Pourmotabbed, Elizabeth Pang, Roy Sharma, Ivanna Yau, Ayako Ochi, Hiroshi Otsubo, O Carter Snead, Elizabeth Donner, Cristina Go, Elysa Widjaja, Abbas Babajani-Feremi, George M Ibrahim,

There is an unmet need to develop robust predictive algorithms to preoperatively identify pediatric epilepsy patients who will respond to vagus nerve stimulation (VNS). Given the similarity in the neural circuitry between vagus and median nerve afferent projections to the primary somatosensory cortex, the current study hypothesized that median nerve ... Read more >>

Neuroimage Clin (NeuroImage. Clinical)
[2020, 26:102205]

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Moving beyond belief: A narrative review of potential biomarkers for transcutaneous vagus nerve stimulation.

Andreas Michael Burger, Martina D'Agostini, Bart Verkuil, Ilse Van Diest,

Transcutaneous vagus nerve stimulation (tVNS) is a non-invasive neurostimulation technique that is currently being tested as a potential treatment for a myriad of neurological and psychiatric disorders. However, the working mechanisms underlying tVNS are poorly understood and it remains unclear whether stimulation activates the vagus nerve for every participant. Finding ... Read more >>

Psychophysiology (Psychophysiology)
[2020, :e13571]

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TTTCA Repeat Expansion of SAMD12 in a New Benign Adult Familial Myoclonic Epilepsy Pedigree.

Chaorong Liu, Yanmin Song, Ying Yuan, Ying Peng, Nan Pang, Ranhui Duan, Wen Huang, Xuehui Qin, Wenbiao Xiao, Hongyu Long, Sha Huang, Pinting Zhou, Lili Long, Bo Xiao,

Benign adult familial myoclonic epilepsy (BAFME) is an autosomal dominant disorder characterized by adult-onset cortical myoclonus with or without seizures. Recently, it was reported to be associated with intronic TTTTA/TTTCA expansions. To investigate whether these abnormal expansions are involved in our new pedigree from China, whole exome sequencing (WES) and ... Read more >>

Front Neurol (Frontiers in Neurology)
[2020, 11:68]

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Expanding Simulation Models of Emotional Understanding: The Case for Different Modalities, Body-State Simulation Prominence, and Developmental Trajectories.

Paddy Ross, Anthony P Atkinson,

Recent models of emotion recognition suggest that when people perceive an emotional expression, they partially activate the respective emotion in themselves, providing a basis for the recognition of that emotion. Much of the focus of these models and of their evidential basis has been on sensorimotor simulation as a basis ... Read more >>

Front Psychol (Frontiers in Psychology)
[2020, 11:309]

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The influence of ketamine's repeated treatment on brain topology does not suggest an antidepressant efficacy.

Natalia Gass, Robert Becker, Jonathan Reinwald, Alejandro Cosa-Linan, Markus Sack, Wolfgang Weber-Fahr, Barbara Vollmayr, Alexander Sartorius,

As ketamine is increasingly used as an effective antidepressant with rapid action, sustaining its short-lived efficacy over a longer period of time using a schedule of repeated injections appears as an option. An open question is whether repeated and single administrations would affect convergent neurocircuits. We used a combination of ... Read more >>

Transl Psychiatry (Translational psychiatry)
[2020, 10(1):56]

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20-kHz alternating current stimulation: effects on motor and somatosensory thresholds.

Diego Serrano-Muñoz, Juan Avendaño-Coy, Cristina Simón-Martínez, Julian Taylor, Julio Gómez-Soriano,

BACKGROUND:High frequency alternating current (HFAC) stimulation have been shown to produce a peripheral nerve conduction block. Currently, all the studies applying HFAC stimulation in clinical studies, have employed frequencies below 10 kHz. The main aim of this work was to investigate the neuromodulatory effect of transcutaneous 20 kHz stimulation on somatosensory and ... Read more >>

J Neuroeng Rehabil (Journal of neuroengineering and rehabilitation)
[2020, 17(1):22]

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A Tactile Virtual Reality for the Study of Active Somatosensation.

Arindam Bhattacharjee, Diljit Singh Kajal, Alessandra Patrono, Yiwen Li Hegner, Massimiliano Zampini, Cornelius Schwarz, Christoph Braun,

Natural exploration of textures involves active sensing, i.e., voluntary movements of tactile sensors (e.g., human fingertips or rodent whiskers) across a target surface. Somatosensory input during moving tactile sensors varies according to both the movement and the surface texture. Combining motor and sensory information, the brain is capable of extracting ... Read more >>

Front Integr Neurosci (Frontiers in integrative neuroscience)
[2020, 14:5]

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Carbon Monoxide Exerts Functional Neuroprotection After Cardiac Arrest Using Extracorporeal Resuscitation in Pigs.

Jakob Wollborn, Christoph Steiger, Soroush Doostkam, Nils Schallner, Nils Schroeter, Fabian A Kari, Lorenz Meinel, Hartmut Buerkle, Martin A Schick, Ulrich Goebel,

OBJECTIVES:Neurologic damage following cardiac arrest remains a major burden for modern resuscitation medicine. Cardiopulmonary resuscitation with extracorporeal circulatory support holds the potential to reduce morbidity and mortality. Furthermore, the endogenous gasotransmitter carbon monoxide attracts attention in reducing cerebral injury. We hypothesize that extracorporeal resuscitation with additional carbon monoxide application reduces ... Read more >>

Crit. Care Med. (Critical care medicine)
[2020, :]

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Spatiotemporal properties of whisker-evoked tactile responses in the mouse secondary somatosensory cortex.

Sophie Hubatz, Guillaume Hucher, Daniel E Shulz, Isabelle Férézou,

The representation of rodents' mystacial vibrissae within the primary somatosensory (S1) cortex has become a major model for studying the cortical processing of tactile sensory information. However, upon vibrissal stimulation, tactile information first reaches S1 but also, almost simultaneously, the secondary somatosensory cortex (S2). To further understand the role of ... Read more >>

Sci Rep (Scientific reports)
[2020, 10(1):763]

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Advances in the pathophysiology of adult-onset focal dystonias: recent neurophysiological and neuroimaging evidence.

Antonella Conte, Giovanni Defazio, Marcello Mascia, Daniele Belvisi, Patrizia Pantano, Alfredo Berardelli,

Focal dystonia is a movement disorder characterized by involuntary muscle contractions that determine abnormal postures. The traditional hypothesis that the pathophysiology of focal dystonia entails a single structural dysfunction (i.e. basal ganglia) has recently come under scrutiny. The proposed network disorder model implies that focal dystonias arise from aberrant communication ... Read more >>

F1000Res (F1000Research)
[2020, 9:]

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Direct electrical stimulation of the premotor cortex shuts down awareness of voluntary actions.

Luca Fornia, Guglielmo Puglisi, Antonella Leonetti, Lorenzo Bello, Anna Berti, Gabriella Cerri, Francesca Garbarini,

A challenge for neuroscience is to understand the conscious and unconscious processes underlying construction of willed actions. We investigated the neural substrate of human motor awareness during awake brain surgery. In a first experiment, awake patients performed a voluntary hand motor task and verbally monitored their real-time performance, while different ... Read more >>

Nat Commun (Nature communications)
[2020, 11(1):705]

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Restoring Somatosensation: Advantages and Current Limitations of Targeting the Brainstem Dorsal Column Nuclei Complex.

Alastair J Loutit, Jason R Potas,

Current neural prostheses can restore limb movement to tetraplegic patients by translating brain signals coding movements to control a variety of actuators. Fast and accurate somatosensory feedback is essential for normal movement, particularly dexterous tasks, but is currently lacking in motor neural prostheses. Attempts to restore somatosensory feedback have largely ... Read more >>

Front Neurosci (Frontiers in Neuroscience)
[2020, 14:156]

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EEG alpha activity increased in response to transcutaneous electrical nervous stimulation in young healthy subjects but not in the healthy elderly.

Ebru Yıldırım, Bahar Güntekin, Lütfü Hanoğlu, Candan Algun,

Transcutaneous Electrical Nerve Stimulation (TENS) is used not only in the treatment of pain but also in the examination of sensory functions. With aging, there is decreased sensitivity to somatosensory stimuli. It is essential to examine the effect of TENS application on the sensory functions in the brain by recording ... Read more >>

PeerJ (PeerJ)
[2020, 8:e8330]

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Transcranial Pulse Stimulation with Ultrasound in Alzheimer's Disease-A New Navigated Focal Brain Therapy.

Roland Beisteiner, Eva Matt, Christina Fan, Heike Baldysiak, Marleen Schönfeld, Tabea Philippi Novak, Ahmad Amini, Tuna Aslan, Raphael Reinecke, Johann Lehrner, Alexandra Weber, Ulrike Reime, Cédric Goldenstedt, Ernst Marlinghaus, Mark Hallett, Henning Lohse-Busch,

Ultrasound-based brain stimulation techniques may become a powerful new technique to modulate the human brain in a focal and targeted manner. However, for clinical brain stimulation no certified systems exist and the current techniques have to be further developed. Here, a clinical sonication technique is introduced, based on single ultrashort ... Read more >>

Adv Sci (Weinh) (Advanced science (Weinheim, Baden-Wurttemberg, Germany))
[2020, 7(3):1902583]

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Memory and Cognition-Related Neuroplasticity Enhancement by Transcranial Direct Current Stimulation in Rodents: A Systematic Review.

Carla Cavaleiro, João Martins, Joana Gonçalves, Miguel Castelo-Branco,

Brain stimulation techniques, including transcranial direct current stimulation (tDCS), were identified as promising therapeutic tools to modulate synaptic plasticity abnormalities and minimize memory and learning deficits in many neuropsychiatric diseases. Here, we revised the effect of tDCS on the modulation of neuroplasticity and cognition in several animal disease models of ... Read more >>

Neural Plast. (Neural Plasticity)
[2020, 2020:4795267]

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Tactile Cross-Modal Acceleration Effects on Auditory Steady-State Response.

Shunsuke Sugiyama, Tomoaki Kinukawa, Nobuyuki Takeuchi, Makoto Nishihara, Toshiki Shioiri, Koji Inui,

In the sensory cortex, cross-modal interaction occurs during the early cortical stages of processing; however, its effect on the speed of neuronal activity remains unclear. In this study, we used magnetoencephalography (MEG) to investigate whether tactile stimulation influences auditory steady-state responses (ASSRs). To this end, a 0.5-ms electrical pulse was ... Read more >>

Front Integr Neurosci (Frontiers in integrative neuroscience)
[2019, 13:72]

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Human Neocortical Neurosolver (HNN), a new software tool for interpreting the cellular and network origin of human MEG/EEG data.

Samuel A Neymotin, Dylan S Daniels, Blake Caldwell, Robert A McDougal, Nicholas T Carnevale, Mainak Jas, Christopher I Moore, Michael L Hines, Matti Hämäläinen, Stephanie R Jones,

Magneto- and electro-encephalography (MEG/EEG) non-invasively record human brain activity with millisecond resolution providing reliable markers of healthy and disease states. Relating these macroscopic signals to underlying cellular- and circuit-level generators is a limitation that constrains using MEG/EEG to reveal novel principles of information processing or to translate findings into new ... Read more >>

Elife (eLife)
[2020, 9:]

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Layer-specific sensory processing impairment in the primary somatosensory cortex after motor cortex infarction.

Atsushi Fukui, Hironobu Osaki, Yoshifumi Ueta, Kenta Kobayashi, Yoshihiro Muragaki, Takakazu Kawamata, Mariko Miyata,

Primary motor cortex (M1) infarctions sometimes cause sensory impairment. Because sensory signals play a vital role in motor control, sensory impairment compromises the recovery and rehabilitation of motor disability. However, the neural mechanism of the sensory impairment is poorly understood. We show that sensory processing in mouse primary somatosensory cortex ... Read more >>

Sci Rep (Scientific reports)
[2020, 10(1):3771]

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Intraoperative neuromonitoring in spine deformity surgery: modalities, advantages, limitations, medicolegal issues - surgeons' views.

Mirza Biscevic, Aida Sehic, Ferid Krupic,

In spine deformity surgery, iatrogenic neurologic injuries might occur due to the mechanical force applied to the spinal cord from implants, instruments, and bony structures, or due to ischemic changes from vessel ligation during exposure and cord distraction/compression during corrective manoeuvres.Prompt reaction within the reversible phase (reducing of compressive/distractive forces) ... Read more >>

EFORT Open Rev (EFORT open reviews)
[2020, 5(1):9-16]

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Characterization of multi-channel intraneural stimulation in transradial amputees.

I Strauss, G Valle, F Artoni, E D'Anna, G Granata, R Di Iorio, D Guiraud, T Stieglitz, P M Rossini, S Raspopovic, F M Petrini, S Micera,

Although peripheral nerve stimulation using intraneural electrodes has been shown to be an effective and reliable solution to restore sensory feedback after hand loss, there have been no reports on the characterization of multi-channel stimulation. A deeper understanding of how the simultaneous stimulation of multiple electrode channels affects the evoked sensations ... Read more >>

Sci Rep (Scientific reports)
[2019, 9(1):19258]

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Anterior Approach Following Intraoperative Reduction for Cervical Facet Fracture and Dislocation.

Seul Gi Kim, Seon Joo Park, Hui Sun Wang, Chang Il Ju, Sung Myung Lee, Seok Won Kim,

OBJECTIVE:The purpose of this study was to evaluate the efficacy of the anterior approach following intraoperative reduction under general anesthesia in patients with cervical facet fracture and dislocation. METHODS:Twenty-three patients with single level cervical facet fracture and dislocation who were subjected to the anterior approach alone following immediate intraoperative reduction ... Read more >>

J Korean Neurosurg Soc (Journal of Korean Neurosurgical Society)
[2020, 63(2):202-209]

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Activity-dependent death of transient Cajal-Retzius neurons is required for functional cortical wiring.

Martina Riva, Ioana Genescu, Chloé Habermacher, David Orduz, Fanny Ledonne, Filippo M Rijli, Guillermina López-Bendito, Eva Coppola, Sonia Garel, Maria Cecilia Angulo, Alessandra Pierani,

Programmed cell death and early activity contribute to the emergence of functional cortical circuits. While most neuronal populations are scaled-down by death, some subpopulations are entirely eliminated, raising the question of the importance of such demise for cortical wiring. Here, we addressed this issue by focusing on Cajal-Retzius neurons (CRs), ... Read more >>

Elife (eLife)
[2019, 8:]

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