Results 71 to 80 of about 107,978 (189)
Serotonergic and noradrenergic contributions to human motor cortical and spinal motoneuronal excitability [PDF]
arXiv, 2023 Animal models indicate that motor behaviour is shaped by monoamine neurotransmitters released diffusely throughout the brain and spinal cord. We present strong evidence that human motor pathways are equally affected by neuromodulation through noradrenergic and serotonergic projections arising from the brainstem.
arxiv
A Framework for Exploring Non-Linear Functional Connectivity and Causality in the Human Brain: Mutual Connectivity Analysis (MCA) of Resting-State Functional MRI with Convergent Cross-Mapping and Non-Metric Clustering [PDF]
arXiv, 2014 We present a computational framework for analysis and visualization of non-linear functional connectivity in the human brain from resting state functional MRI (fMRI) data for purposes of recovering the underlying network community structure and exploring causality between network components.
arxiv
Involvement of Primary Motor Cortex in Motor Imagery: A Neuromagnetic Study
NeuroImage, 1997 Functional brain imaging studies have indicated that several cortical and subcortical areas active during actual motor performance are also active during imagination or mental rehearsal of movements. Recent evidence shows that the primary motor cortex may also be involved in motor imagery.
Riitta Hari +4 more
openaire +2 more sources
Effects on the Motor Cortex in Gamma Rhythm in Terms of Central Pattern Generator
IEEE Access, 2019 The locomotion is one of the basic skills essential for animals' survival. It is a key research field where the locomotion is modulated by the motor cortex.
Qiang Lu, Zhenpeng Ma, Wenfeng Li
doaj +1 more source
A posture subspace in primary motor cortex
SummaryTo generate movements, the brain must combine information about movement goal and body posture. Motor cortex (M1) is a key node for the convergence of these information streams. How are posture and goal information organized within M1’s activity to permit the flexible generation of movement commands?
Patrick J. Marino +11 more
openaire +2 more sources
Motor Training Increases the Stability of Activation Patterns in the Primary Motor Cortex
PLoS ONE, 2013 Learning to be skillful is an endowed talent of humans, but neural mechanisms underlying behavioral improvement remain largely unknown. Some studies have reported that the mean magnitude of neural activation is increased after learning, whereas others have instead shown decreased activation. In this study, we used functional magnetic resonance imaging (
Yiying Song +6 more
openaire +5 more sources
Iron overload in the motor cortex induces neuronal ferroptosis following spinal cord injury
Redox Biology, 2021 Motor neuron death is supposed to result in primary motor cortex atrophy after spinal cord injury (SCI), which is relevant to poorer motor recovery for patients with SCI. However, the exact mechanisms of motor neuron death remain elusive.
Zhou Feng +6 more
doaj
Reconfiguring motor circuits for a joint manual and BCI task [PDF]
arXiv, 2017 Designing brain-computer interfaces (BCIs) that can be used in conjunction with ongoing motor behavior requires an understanding of how neural activity co-opted for brain control interacts with existing neural circuits. For example, BCIs may be used to regain lost motor function after stroke.
arxiv
Brain SciencesObjectives: This study aimed to investigate how motor preparation impacted brain activation in individuals with differing cognitive statuses. Methods: We investigated the cortical activation pattern of 57 individuals with mild cognitive impairment (MCI ...
Hanfei Li +8 more
doaj +1 more source
Frontiers in Human Neuroscience, 2018 Hemodynamic response to motor execution (ME) and motor imagery (MI) was investigated using functional near-infrared spectroscopy (fNIRS). We used a 31 channel fNIRS system which allows non-invasive monitoring of cerebral oxygenation changes induced by ...
Shijing Wu +5 more
doaj +1 more source