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Channel: Medical Xpress news tagged with:feedback system
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New findings on glucagon synthesis

Researchers at Karolinska Institutet in Sweden have shown that the cells that produce glucagon are stimulated by the hormone itself. A previous study by the same group demonstrated that this principle...

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Helping the nose know: Researcher answers 100-year-old question about how...

More than a century after it was first identified, Harvard scientists are shedding new light on a little-understood neural feedback mechanism that may play a key role in how the olfactory system works...

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Virtual reality simulator helps teach surgery for brain cancer

A new virtual reality simulator—including sophisticated 3-D graphics and tactile feedback—provides neurosurgery trainees with valuable opportunities to practice essential skills and techniques for...

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Protein implicated in lupus promotes disease progression by distinct...

Patients with systemic lupus erythematosus (SLE) come under attack by their immune system, producing 'autoantibodies' that inflict damage throughout the body. Antibodies normally target foreign...

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Sense of touch reproduced through prosthetic hand

In a study recently published in IEEE Transactions on Neural Systems and Rehabilitation Engineering, neurobiologists at the University of Chicago show how an organism can sense a tactile stimulus, in...

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Cells must use their brakes moderately for effective speed control

How cells regulate their own function by "accelerating and braking" is important basic knowledge when new intelligent medicines are being developed, or when plant cells are tweaked to produce more...

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Putting the brakes on inflammation

A team led by a University of Arizona researcher has discovered a previously unknown mechanism that prevents the immune system from going into overdrive, shedding light not only on how our body...

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Negative feedback stabilizes memories

(Medical Xpress)—Memories may be maintained in the brain through a mechanism familiar to any engineer—negative and positive feedback loops, according to researchers Sukbin Lim and Mark Goldman at the...

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Amputee feels in real-time with bionic hand wired to nerves (w/ video)

Nine years after an accident caused the loss of his left hand, Dennis Aabo Sørensen from Denmark became the first amputee in the world to feel – in real-time – with a sensory-enhanced prosthetic hand...

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Mind-controlled prosthetic arms that work in daily life are now a reality

For the first time, robotic prostheses controlled via implanted neuromuscular interfaces have become a clinical reality. A novel osseointegrated (bone-anchored) implant system gives patients new...

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Scientists uncover a new layer in visual brain imaging

Neuroscientists have gained new insight into how the brain perceives the world by using high resolution high field MRI to study activity in different layers of the visual cortex in great detail.

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When output becomes part of input

Neurofeedback is a technique used for the treatment of clinical disorders (like depression, anxiety, chronic pain, ADHD and schizophrenia etc.) and enhancement of brain performance. It is based on the...

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