Article
Neurosciences
Scott J. Mongold, Harri Piitulainen, Thomas Legrand, Marc Vander Ghinst, Gilles Naeije, Veikko Jousmaki, Mathieu Bourguignon
Summary: This study reveals fine-grained temporal modulations in the beta sensorimotor brain rhythm and its coupling with muscle activity, which precede changes in muscle force and predict the stability of force output.
Article
Neurosciences
Charidimos Tzagarakis, Sarah West, Giuseppe Pellizzer
Summary: The study found that reaction time increased as the reliability of visual information about the upcoming target decreased. During trials with invalid cues, there was a phasic increase of theta-band power in specific brain regions, indicating whether the target was at the expected location. The beta-band power in motor-related areas reflected the reliability of directional information used during motor preparation.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Neuroimaging
Marie C. McCusker, Alex Wiesman, Rachel K. Spooner, Pamela M. Santamaria, Jennifer McKune, Elizabeth Heinrichs-Graham, Tony W. Wilson
Summary: The sequelae of Parkinson's disease include both motor and cognitive-related symptoms, with studies indicating neural differences in patients during multi-component movements. Patients with PD were slower in executing movement sequences and exhibited weaker neural activity in specific brain regions, suggesting impaired motor sequence execution. Understanding the cortical pathophysiology of PD could inform therapeutic interventions addressing both motor and cognitive symptoms.
NEUROIMAGE-CLINICAL
(2021)
Article
Clinical Neurology
Hannah Bergwell, Michael P. P. Trevarrow, Elizabeth Heinrichs-Graham, Anna Reelfs, Lauren R. R. Ott, Samantha H. H. Penhale, Tony W. W. Wilson, Max J. J. Kurz
Summary: Cerebral palsy (CP) is a common neurodevelopmental motor disability that causes life-long sensory, perception, and motor impairments. The underlying neurophysiological mechanisms of these impairments worsening during transition from adolescence to adulthood remain poorly understood. Using magnetoencephalographic (MEG) brain imaging, this study found that individuals with CP exhibit altered spontaneous cortical activity during this transition period.
FRONTIERS IN NEUROLOGY
(2023)
Article
Neurosciences
Madison H. Fung, Elizabeth Heinrichs-Graham, Brittany K. Taylor, Michaela R. Frenzel, Jacob A. Eastman, Yu-Ping Wang, Vince D. Calhoun, Julia M. Stephen, Tony W. Wilson
Summary: Puberty is a period of significant hormonal fluctuations that can influence the structural and functional changes in the developing brain. This study used MEG technology to investigate the impact of pubertal hormones on motor-related oscillations in 69 youths. The findings revealed that pubertal hormones have complex effects on beta event-related desynchronization and highlight the continued development of motor cortical dynamics during puberty.
Article
Neurosciences
Maciej J. Szul, Sotirios Papadopoulos, Sanaz Alavizadeh, Sebastien Daligaut, Denis Schwartz, Jeremie Mattout, James J. Bonaiuto
Summary: Classical analyses of neural activity usually average power over trials, while recent studies have shown that beta band activity occurs in transient bursts. In this study, we demonstrate that burst shapes vary widely and are predicted by variability in synaptic drives. Burst detection algorithm and principal component analysis were then used to identify different waveform motifs and their contribution to movement-related beta dynamics. This suggests that sensorimotor beta bursts are not homogeneous events and reflect distinct computational processes.
PROGRESS IN NEUROBIOLOGY
(2023)
Article
Neurosciences
Elisa Visani, Gioacchino Garofalo, Davide Rossi Sebastiano, Dunja Duran, Laila Craighero, Lucia Riggio, Giovanni Buccino
Summary: There is evidence that the brain systems involved in action execution also play a role in action observation and understanding. Recent studies suggest that the sensorimotor system is also involved in language processing. The findings demonstrate that the processing of visually presented actions and verbally described actions engage the sensorimotor system in a similar way, supporting the embodied view of semantic processing.
FRONTIERS IN HUMAN NEUROSCIENCE
(2022)
Article
Clinical Neurology
Stephen T. Foldes, Santosh Chandrasekaran, Joseph Camerone, James Lowe, Richard Ramdeo, John Ebersole, Chad E. Bouton
Summary: This study presents a method for mapping impaired somatosensory and motor function in an individual with paralysis and an existing brain-computer interface device. Using magnetoencephalography, the evoked fields were found to align with the expected anatomy and somatotopic organization, providing potential guidance for guiding implants in other applications.
FRONTIERS IN NEUROLOGY
(2021)
Article
Behavioral Sciences
Ariel D. Roxburgh, David J. White, Christian Grillon, Brian R. Cornwell
Summary: Threat-induced anxiety is associated with sustained reductions in beta- and alpha-band oscillatory activities in sensorimotor and parietal cortical regions, reflecting heightened action readiness and vigilance. These findings provide important insights for identifying abnormalities in cortical oscillations in clinically anxious patients and evaluating the effectiveness of anxiolytic treatments.
COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE
(2023)
Article
Neurosciences
Julia Jaatela, Dogu Baran Aydogan, Timo Nurmi, Jaakko Vallinoja, Harri Piitulainen
Summary: Studying white matter connections with tractography is a promising approach to understanding brain development. Different functional seeding methods can have an impact on the characteristics of white matter connections, highlighting the need for using multimodal imaging to obtain a comprehensive understanding.
Article
Neurosciences
Brian Mathias, Andrea Waibel, Gesa Hartwigsen, Leona Sureth, Manuela Macedonia, Katja M. Mayer, Katharina von Kriegstein
Summary: The study found that sensorimotor-enriched training can change the representations of L2 words in the motor cortex, thereby facilitating the translation of L2 words. Different training methods have different effects on the translation speed of L2 words.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Neurosciences
Maria Hakonen, Timo Nurmi, Jaakko Vallinoja, Julia Jaatela, Harri Piitulainen
Summary: Corticokinematic coherence (CKC) analyzes the relationship between limb kinematics and cortical neurophysiological signals. The study found that CKC strength is stronger when all four fingers are simultaneously stimulated at the same frequency, and weaker when fingers are simultaneously stimulated at finger-specific frequencies. The CKC source locations in the cortex are concentrated in the hand region and do not follow a consistent finger-specific somatotopic order. This suggests that proprioceptive feedback from the fingers is processed through partially overlapping neural circuits in the brain.
JOURNAL OF NEUROPHYSIOLOGY
(2022)
Article
Clinical Neurology
Rashelle M. Hoffman, Michael P. Trevarrow, Hannah R. Bergwell, Christine M. Embury, Elizabeth Heinrichs-Graham, Tony W. Wilson, Max J. Kurz
Summary: This study investigated the altered cognition in adults with cerebral palsy using magnetoencephalography (MEG). The results showed that aberrant alpha-beta oscillations during encoding may impact the basic encoding of information in adults with CP, affecting their overall cognition. Weak alpha-beta oscillation within the prefrontal cortex was associated with poorer cognitive performance and higher GMFCS level.
CLINICAL NEUROPHYSIOLOGY
(2021)
Article
Clinical Neurology
Jack Jiaqi Zhang, Zhongfei Bai, Kenneth N. K. Fong
Summary: This study investigated the effects of priming iTBS on poststroke hemiparetic upper limb recovery. The results showed that priming and nonpriming iTBS were both superior to sham stimulation in enhancing treatment gains from robot-assisted training. Priming iTBS may facilitate poststroke motor learning, especially for patients with a higher functioning upper limb.
Article
Psychology, Biological
J. Christopher Edgar, Jeffrey Berman, Song Liu, Yu-Han Chen, Mingxiong Huang, Edward S. Brodkin, Timothy P. L. Roberts, Luke Bloy
Summary: This study aimed to explore how brain regions maintain functional independence with a common peak alpha frequency (PAF). The findings suggest that although the alpha generators oscillate at the same rate on average, they oscillate slightly slower or faster over time, and approximately every one and a half seconds an alpha generator abruptly loses the beat. These findings are important for understanding the mechanisms of functional independence among brain regions.
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
(2022)
Article
Neurosciences
Ronen Sosnik, Vijay Aditya Tadipatri, Ahmed H. Tewfik, Giuseppe Pellizzer
Article
Engineering, Biomedical
Vijay Aditya Tadipatri, Ahmed H. Tewfik, Giuseppe Pellizzer, James Ashe
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2017)
Article
Neurosciences
Adam F. Carpenter, Gabriel Baud-Bovy, Apostolos P. Georgopoulos, Giuseppe Pellizzer
JOURNAL OF NEUROSCIENCE
(2018)
Article
Neurosciences
Tianxiao Jiang, Su Liu, Giuseppe Pellizzer, Aydin Aydoseli, Sacit Karamursel, Pulat A. Sabanci, Altay Sencer, Candan Gurses, Nuri F. Ince
FRONTIERS IN NEUROSCIENCE
(2018)
Article
Neurosciences
Tianxiao Jiang, Giuseppe Pellizzer, Priscella Asman, Dhiego Bastos, Shreyas Bhavsar, Sudhakar Tummala, Sujit Prabhu, Nuri F. Ince
FRONTIERS IN NEUROSCIENCE
(2020)
Article
Neurosciences
Charidimos Tzagarakis, Sarah West, Giuseppe Pellizzer
Summary: The study found that reaction time increased as the reliability of visual information about the upcoming target decreased. During trials with invalid cues, there was a phasic increase of theta-band power in specific brain regions, indicating whether the target was at the expected location. The beta-band power in motor-related areas reflected the reliability of directional information used during motor preparation.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Psychiatry
Maryse Badan Ba, Logos Curtis, Giuseppe Pellizzer
Summary: Schizophrenia patients have difficulty with processing visuo-spatial information, which is reflected in increased errors and response times in mental rotation tasks. This deficit may explain the difficulties these patients have in perspective-taking and inferring other people's viewpoints, thoughts, or intentions.
SCHIZOPHRENIA RESEARCH
(2022)
Editorial Material
Behavioral Sciences
Charidimos Tzagarakis
FRONTIERS IN BEHAVIORAL NEUROSCIENCE
(2022)
Article
Clinical Neurology
Priscella Asman, Giuseppe Pellizzer, Sudhakar Tummala, Israt Tasnim, Dhiego Bastos, Shreyas Bhavsar, Sujit Prabhu, Nuri F. Ince
Summary: The study aims to evaluate the functional use of sub-band modulations in somatosensory evoked potentials (SSEPs) to discriminate between the primary somatosensory (S1) and motor (M1) areas and contrast the states of consciousness. Through time-frequency analysis on SSEP traces, spectral modulations were extracted and their spatial topography visualized in anesthetized and awake states. The results showed that late gamma modulation can serve as a biomarker for primary sensorimotor localization and monitor the level of consciousness in neurosurgical practice.
CLINICAL NEUROPHYSIOLOGY
(2023)
Article
Neurosciences
Vijayakumar Mavanji, Jennifer A. Teske, Catherine M. Kotz, Giuseppe Pellizzer
Summary: Orexin-A (OXA) is a hypothalamic neuropeptide that regulates wakefulness, appetite, reward processing, muscle tone, motor activity, and other physiological processes. It increases the excitability of the sensorimotor system, which leads to an increase in awake time, muscle tone, and spontaneous physical activity (SPA).
JOURNAL OF NEUROSCIENCE RESEARCH
(2023)
Article
Behavioral Sciences
Charidimos Tzagarakis, Andrew Thompson, Robert A. Rogers, Giuseppe Pellizzer
FRONTIERS IN INTEGRATIVE NEUROSCIENCE
(2019)