Articles tagged with Motor Cortex
A new study improves brain-machine interface control by adding a robotic arm providing kinesthetic information, enhancing the design of 'wearable robots' for paralyzed patients. This approach may help spinal cord injury patients operate computers and robots using only their thoughts.
Researchers found that stroke patients with severe motor impairments used alternative mental strategies to complete tasks, suggesting a more complex phenomenon than previously thought. The study suggests that motor imagery may be a key factor in creative problem-solving and innovation.
Researchers translated brain signals into words using two grids of 16 microelectrodes implanted beneath the skull but atop the brain. The study showed that the method can distinguish between brain signals for each word, with an accuracy rate of 76-90%, demonstrating proof of concept.
Researchers have determined the relationship between brain waves and attention using a brain-computer interface device. High-frequency beta oscillations are linked to anticipation of oncoming information, while slower delta oscillations act as an internal metronome to fine-tune attention.
Researchers identified abnormalities in nerve pathways connecting key brain areas, suggesting a possible cause of writer's cramp. The study used diffusion-tensor magnetic resonance imaging (DTI) to assess white matter changes, finding differences between patients and healthy controls.
A new area of the cerebral cortex has evolved to enable complex movements, such as picking up small objects and using tools, in humans and higher primates. This new area is home to cortico-motoneuronal cells that directly control spinal cord motor neurons, bypassing limitations imposed by spinal cord circuitry.
Researchers successfully linked a person's brain to individual muscles in a paralyzed limb using neuroprosthetic devices, allowing natural control and movements. The study demonstrates a novel approach to restoring movement through direct artificial connections between the brain and muscles.
Researchers have discovered that the brain uses a forward model to generate predictions about future movements, allowing for rapid and accurate control. This breakthrough has significant implications for the development of neural prosthetic devices and could one day enable people with paralysis to control their limbs through thought.
Researchers found that brain compensatory mechanisms actively contribute to recovery from spinal cord injury, enhancing function in bilateral primary motor cortex regions. This study reinforces current understanding of neurorehabilitation and may lead to new rehabilitation strategies for patients with spinal cord injuries.
The study reveals a novel function for COUP-TF1 in balancing the sizes of functional areas in the brain, ensuring proper partitioning into 'frontal' areas controlling emotions and movements versus sensory areas interpreting the environment. This discovery may explain individual differences in behavior and skills.
Researchers identified areas of the brain involved in voluntary and involuntary movement, finding that neural activity was restricted to the primary motor cortex during unconscious motor activity seen with Alien Hand Syndrome. The study suggests conscious and unconscious motor activity involves the same underlying brain structures.
Researchers at the University of Washington developed an implantable electronic chip that induces brain changes in monkeys lasting more than a week. The device strengthens weak connections in the motor cortex, which may have potential in rehabilitating patients with brain injuries or paralysis.
Researchers discovered that younger people struggle to ignore secondary targets due to an undeveloped frontal cortex, leading to rapid eye movements and multiple saccades. This study may hold clues for understanding developmental delays in cerebral palsy patients.
A mouse model of Rett Syndrome displays reduced cortical activity, suggesting a primary cellular defect. The study found that the excitatory-inhibitory balance in the cortex is shifted towards inhibition, which may underlie cognitive, motor, and social symptoms in RTT.
Researchers at University of Pittsburgh successfully trained a monkey to feed itself using a child-sized robotic arm controlled by its own brain signals. The breakthrough technology uses tiny electrodes and specialized algorithms to interpret brain activity and guide the arm's movements.
Researchers develop a new TMS method that produces controllable and long-lasting effects on the human motor cortex. The method uses short bursts of low-intensity pulses to overcome previous stimulation approaches' limitations.
Researchers at UCL discovered a new method to improve Transcranial Magnetic Stimulation (TMS) that can produce effects on the brain for more than an hour. By adjusting stimulation patterns, they achieved rapid and consistent changes in the motor cortex area, outlasting conventional TMS.
Rutgers-Newark researchers found that early movement provides critical information to the developing brain for proper sensory representation. This discovery may explain how the brain determines spatial awareness and distance perception.
Researchers found that brain surface stimulation significantly reduced Parkinson's symptoms in animals, restoring normal activity in the striatum and motor cortex. The study suggests that this method could be an effective alternative to deep-brain stimulation with major advantages in simplicity and safety.
Researchers create new methods to record brain activity, including collecting signals from hundreds of thousands of brain cells and using electrodes that don't penetrate the brain. These advancements bring the field closer to prosthetic devices controlled by thought, improving performance and reducing risks.
The study found that the primary motor cortex represented actual movement while the ventral premotor cortex generated elliptical shapes. The research reveals how the mind creates order and adjusts on the fly to eliminate distortions, with implications for developing biomedical devices controlling artificial limbs.
Research found extensive changes in brain processing of simple motor movements in patients with all three illnesses. The primary motor cortex took over hand motion control in some cases, while others relied on the cerebellum for coordination.
Researchers discovered how brain filters sensory inputs to focus on specific smells, tastes, or sounds by hardwiring sensory and motor cortices. This mechanism enables immediate motor signals to enhance sensory perception, illustrating the intricate connection between sensation and motor control.
Researchers have discovered that stimulating nerves can alter cortical responses, leading to potential therapeutic approaches for stroke victims. By bypassing damaged brain areas, patients may regain at least some movement control.