Surface Emg Biofeedback
Surface Emg Biofeedback - Related Videos
07:16
Extraction of the EPP Component from the Surface EMG
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Cited by 2 •
2009
The endplate potential (EPP) component can be extracted from the surface EMG using a digital filter. The extracted EPP shows oscillation with a frequency of about 30 Hz.
10:16
Psychophysiological Stress Assessment Using Biofeedback
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Cited by 9 •
2009
In this video we will describe one method of assessing person's psychophysiological reaction to stress using biofeedback. We will also present general guidelines for treatment planning.
10:51
Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
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Cited by 32 •
2012
Here we present a method for training people to control a brain area involved in contamination anxiety and for probing the relationship between contamination anxiety and brain connectivity patterns.
06:52
The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project
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Cited by 48 •
2009
The Project on Virtual Reality Intelligent Multi-sensor System for the Treatment of Anxiety-related Disorders (INTREPID) is aimed at developing a multi-sensor context-aware virtual reality system for the treatment of anxiety-related disorders.
11:31
Functional Near Infrared Spectroscopy of the Sensory and Motor Brain Regions with Simultaneous Kinematic and EMG Monitoring During Motor Tasks
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Cited by 16 •
2014
Monitoring brain activity during upright motor tasks is of great value when investigating the neural source of movement disorders. Here, we demonstrate a protocol that combines functional near infrared spectroscopy with continuous monitoring of muscle and kinematic activity during 4 types of motor tasks.
FAQs
The system converts moment-to-moment changes in a muscle’s myoelectric signal into feedback that the person can observe or hear. During practice, the individual compares the displayed response with the intended contraction or relaxation and adjusts effort accordingly. This feedback loop supports voluntary control by making otherwise unobserved changes in muscle activity available for immediate correction.
Electrodes must be placed on the skin over the skeletal muscle selected for training so the displayed signal reflects the activity being practiced. Targeting a weak muscle can help the person recognize and increase its activation, while targeting a muscle with excessive or inappropriate activity can support efforts to reduce that activity. The selected muscle therefore determines the training focus.
Visual feedback presents changes in myoelectric activity through a display, whereas auditory feedback communicates those changes through sound. Both give the person immediate information about whether muscle activity is changing in the intended direction. The feedback format can therefore support repeated practice of either stronger activation or greater relaxation while the individual actively adjusts performance.
Yes. Training does not have to focus only on increasing activity in a weak muscle. When a muscle shows excessive or inappropriate activity, the feedback can help the person recognize that response and practice reducing it. This ability to reinforce either activation or relaxation makes the approach relevant to different motor-control problems encountered during medical rehabilitation.
A clinician places electrodes on the skin over the muscle selected for training and connects them to a system that amplifies the myoelectric signal. The person then performs contraction or relaxation practice while viewing or hearing the resulting changes. Immediate feedback allows adjustments during the exercise and provides information that can guide repeated motor practice.
Clinicians may use Surface EMG Biofeedback when rehabilitation requires improved activation of a weak muscle, reduced excessive or inappropriate activity, or relearning of more effective motor control. The overview specifically identifies applications after injury and neurological disease. In these settings, feedback gives patients information they can use while practicing movement rather than relying only on felt performance.
Changes in the displayed or auditory myoelectric response can provide information about how a patient performs targeted contraction or relaxation during practice. Clinicians can use this information to assess treatment progress and determine whether the patient is producing more effective muscle activity. The method therefore contributes both to active training and to observing changes in motor control over rehabilitation.