Background: Neurofeedback (NF) in children with attention-deficit/hyperactivity disorder (ADHD) has been investigated in a series of studies over the last years. Previous studies did not unanimously support NF as a treatment in ADHD. Most studies did not control for unspecific treatment effects and did not demonstrate that self-regulation took place. The present study examined the efficacy of N...

OBJECTIVE To document electromyographic (EMG) changes in thyrotoxic patients, and to categorize the type of myopathic process in thyrotoxicosis. METHODS This case control study was designed to show the EMG changes in thyrotoxic patients and to compare these findings with that of normal aged matched controls to show the significance of these changes in thyrotoxic patients. Student`s test was a...

1. Normal human subjects made discrete elbow flexions and extensions in the horizontal plane from a stationary initial position to visually defined targets at different distances with a constant inertial load or made flexions to a visually defined target with different inertial loads. We measured joint angle, acceleration, and electromyograms (EMGs) from two agonist and two antagonist muscles. ...

This paper considers the application of Blind Source Separation (BSS) to electromyographic (EMG) data as an approach to isolating individual motor unit potentials (MUPs). BSS was applied both to needle EMG (nEMG) and surface EMG (sEMG), and experimental results were obtained that demonstrate the effectiveness of this approach. BSS is proposed as a technique to be incorporated into EMG methodolo...

Sjøgaard, Gisela, Bente R. Jensen, Alan R. Hargens, and Karen Søgaard. Intramuscular pressure and EMG relate during static contractions but dissociate with movement and fatigue. J Appl Physiol 96: 1522–1529, 2004. First published December 5, 2003; 10.1152/ japplphysiol.00687.2003.—Intramuscular pressure (IMP) and electromyography (EMG) mirror muscle force in the nonfatigued muscle during static...

Sensorimotor control dysfunction or dyskinesia is a hallmark of neuromuscular impairment in children with cerebral palsy (CP), and is often implicated in reaching and grasping deficiencies due to a neuromuscular imbalance between the triceps and biceps. To mitigate such muscle imbalances, an innovative electromyography (EMG)-virtual reality (VR) biofeedback system were designed to provide accur...