Articles tagged with Hands
A team of scientists at Karolinska Institutet has successfully created an illusion of having three arms by using a realistic prosthetic arm. Healthy volunteers were tested and found to experience a third arm as part of their body image, even when it was threatened with harm.
The article highlights the significant impact of human microbiome on overall health, with microbes contributing to protection from disease and production of essential vitamins. Researchers are also exploring how the gut microbiome affects body weight and odor.
A new species of dinosaur, Sarahsaurus, discovered in Arizona suggests that dinosaurs did not spread globally by overpowering other species but instead took advantage of a natural catastrophe. The fossil, which lived around 190 million years ago, shows that sauropodomorphs started out small and later evolved to large size.
New research from UC Berkeley found that magnetic pulses disrupt neurons governing motor skills, increasing left hand use in right-handed volunteers. The study challenges previous assumptions about decision-making and may pave the way for clinical advances in brain injury rehabilitation.
A new study on British Sign Language found that signers make different mistakes in the sign and in mouthing, indicating separate brain processing for hand and lip movements. Researchers suggest that this suggests the signer is processing two languages simultaneously.
Researchers found that custom videogames improved hand function and forearm bone health in teens with hemiplegic cerebral palsy. The games were designed to be used remotely, reducing costs and increasing accessibility to rehabilitation therapy.
The Canon of Medicine, written by the Persian scholar Avicenna, contains detailed information on respiratory diseases remarkably similar to those used today. The article highlights Avicenna's work on respiratory diseases and conditions, including herbal and non-herbal treatments, which are still valid with modern science.
A study published in PLOS ONE found that sensations of touch can be felt and mislocalized towards where a virtual body is seen, altering the mapping of touch sensations in space. This research demonstrates the crucial role of brain mechanisms in multisensory processing for conscious experience.
A study by Ewa Gustafsson found that young adults with neck, arm, or hand symptoms tend to use their mobile phones differently than healthy controls. They often text message while hunched over and use the single thumb technique, which can lead to increased stress on hands and reduced breaks.
The concentration of Hedgehog determines whether the right hand thumb grows on the left hand side, a mechanism controlled by different concentrations of the molecule. The study found that cells use various molecular mechanisms to interpret different Hedgehog concentrations.
Targeted muscle reinnervation (TMR) appears to enable improved control of prosthetic arms for patients with arm amputations. The study, published in JAMA, found that TMR patients achieved high motion selection and completion rates, similar to those of control participants.
Scientists at Karolinska Institutet have successfully induced people with an amputated arm to experience a prosthetic rubber hand as belonging to their own body. This illusion was achieved by tricking the brain into thinking sensory input was coming from the prosthetic hand.
Researchers at Washington University in St. Louis have developed a new brain-computer interface (BCI) technology that can detect and decode brain signals associated with hand and arm movements on the same side of the body. This breakthrough may enable patients with partial paralysis to regain mobility in their limbs.
Researchers at Washington University in St. Louis found that humans inspect objects more thoroughly when their hands are near them, indicating a new insight into brain wiring that could impact rehabilitative therapy techniques and prosthetic design.
Studies of 40 speakers from four languages show consistent use of subject-object-verb order in gestures, contradicting linguistic assumptions. This natural ordering suggests that humans may shape language through nonverbal thought processes.
A study by Northwestern University's Feinberg School of Medicine found that 78% of survey respondents wanted to be greeted by a doctor's name, while only half addressed the patient by name in first-time visits. The researchers recommend using patients' first and last names for a respectful and comfortable introduction.
Researchers discovered that brain regions involved in spatial attention, planning movements, and decision-making activate simultaneously when preparing for a task. This preparation enables the brain to get a 'running start', leading to quicker responses. The study's findings have implications for understanding real-world tasks like dri...
A robotic therapy device called HOWARD has been shown to improve hand function in stroke patients by nearly 10% and manual dexterity by 20%, enabling them to grasp and release objects more effectively. The device, developed by UCI researchers, wraps around the hand and assists patients as they initiate movement.
A two-week rehabilitation program using constraint-induced movement therapy (CIMT) significantly improved function of the affected arm in stroke survivors. CIMT involves training the weakened hand and arm through repetitive exercises while restraining the unaffected hand and arm, forcing patients to use their affected limbs.
A study published in JAMA found that constraint-induced movement therapy (CIMT) significantly improved upper-extremity function in stroke patients. The technique involves restraining the less-impaired arm or hand to encourage usage of the more-affected extremity, resulting in improved motor ability and use.
A Queen's University study compares two recommended protective clothing systems for health-care workers and found that one leaves workers prone to contamination at their forearms, wrists, hands, and necks. The more elaborate ensemble offers superior protection but is time-consuming to don and remove without errors.
A recent study published in The Journal of Physiology reveals that the brain relies on outflow signals to predict limb movement, even when sensory inputs from receptors are blocked. This finding sheds light on how our brains learn to move accurately and provides insight into phantom limb sensations.
Scientists from Max Planck Institute discovered that the auditory cortex integrates sensory information from multiple sources simultaneously, strengthening activity with tactile stimulation. This finding suggests that the brain processes sensory data early to prevent false perceptions.
Researchers developed a treatment using a neuroprosthesis that stimulates muscles with electrical pulses, enabling stroke patients to reconnect damaged neuronal connections and restore hand function. After 16 weeks of training, 85% of the treatment group showed progress in reaching and grasping functions.
A study by U-M researchers found that night-time splinting can effectively improve hand and wrist discomfort for active workers with early symptoms of carpal tunnel syndrome. The results showed significant improvement in symptoms for half of the splinted group after six weeks.
The Stanford cooling tool uses a local subatmospheric pressure environment to cool the body from the inside out, reducing recovery time after anesthesia. By extending endurance in hot environments, the device has significant implications for athletes, military personnel, and factory workers.
Researchers found that skills learned with the dominant arm generalize to the non-dominant arm, but only in extrinsic coordinates, and do not rely on inter-hemispheric communication via the corpus callosum. This challenges current models of brain learning and motor control.
Francisco Valero-Cuevas is awarded a research grant to study the biomechanics of the human thumb, aiming to improve surgical procedures for hand injuries. He will use cadaver hands and a dynamometer to measure the force of the thumb in various directions.
Researchers found that babies exposed to signed language produce distinct hand movements with low-frequency rhythmic activity, indicating an innate sensitivity to linguistic patterns. This discovery suggests that parents' sing-song way of speaking and playful rhyming games can aid the language learning process.
Engineers at Johns Hopkins University invented a globe-shaped motor that can rotate in any direction, giving robotic arms greater flexibility and precision. The device could also be used to create a computer mouse that interacts with the user, or as a three-dimensional wheel with omnidimensional characteristics.
Researchers developed a system that enables users to interact with a computer-controlled map using natural speech and hand gestures. The system recognizes spoken words and gestures, allowing users to locate buildings and parking lots on the Penn State campus.
The MIT Touch Lab researches the hand's intricate mechanisms, aiming to enhance hand impairments diagnosis and virtual reality experiences. Advanced technologies, such as ultrasound microscopes and haptic interfaces, are being developed to study human perception and touch.
Researchers created a computer simulation to help robots learn by imitation, using virtual android Adonis to teach the macarena dance. The system demonstrates that imitation can make robots more flexible and effective in learning any task.
Researchers Matthew Botvinick and Jonathan Cohen found that the brain uses intersensory matches to identify the body as its own, leading to a sense of ownership and self-awareness. This study's findings could have implications for understanding clinical conditions such as phantom limb and alienation phenomenon.
A neural prosthetic system has been recommended for FDA approval, allowing paralyzed people to grasp objects without assistance. The system, developed over 25 years, enables users to regain hand function and perform routine activities with greater independence.
A Cornell University study found that a chair-mounted split keyboard can reduce typing risks for carpal tunnel syndrome by improving upper body posture. The 'floating arms' keyboard (FAK) is the only design that attaches to a chair, reducing deviated postures and wrist movements.