5 days 5 hours ago
What Happens in Your Brain When You Don't Get Enough Sleep ?
When You're Tired, Your Brain Cells Actually Slow Down and Parts of the Brain Appear to Doze.
In a new study, researchers found that sleep deprivation makes it difficult for brain cells to communicate effectively, which, in turn, can lead to temporary mental lapses that affect memory and visual perception.
"We discovered that starving the body of sleep robs neurons of the ability to function properly," senior study author Dr. Itzhak Fried, a professor of neurosurgery at the University of California, Los Angeles (UCLA), said.
The people in the study had to stay up for an entire night.
During this time, the researchers measured the participants' brain activity as they carried out certain tasks. For example, the patients were asked to categorise various images of faces, places and animals as fast as possible.
Each image caused cells in areas of the brain to produce distinctive patterns of electrical activity. Specifically, the researchers focused on cell activity in the temporal lobe, which regulates visual perception and memory.
"We were fascinated to observe how sleep deprivation dampened brain cell activity," lead study author Yuval Nir, a sleep researcher at Tel Aviv University in Israel, said in the statement. "Unlike the usual rapid reaction, the neurons responded slowly, fired more weakly and their transmissions dragged on longer than usual."
In addition, the researchers found that sleep deprivation affects some areas of the brain more than others. Regions of the brain that experienced sluggish brain cell activity also exhibited brain activity normally seen when a person is asleep, the researchers said.
"This phenomenon suggests that select regions of the patients' brains were dozing, causing mental lapses, while the rest of the brain was awake and running as usual," Fried said.
The researchers compared the effects of sleep deprivation to those of drunk driving.
"Inadequate sleep exerts a similar influence on our brain as drinking too much," Fried said. "Yet no legal or medical standards exist for identifying overtired drivers on the road the same way we target drunk drivers."
The study was published November 6, 2017 in the journal Nature Medicine.
1 week 3 days ago
Strength Exercise Could Add Years to Your Life : New study of over 80,000 adults led by the University of Sydney.
The largest study to compare the mortality outcomes of different types of exercise found people who did strength-based exercise had a 23 percent reduction in risk of premature death by any means, and a 31 percent reduction in cancer-related death.
Lead author Associate Professor Emmanuel Stamatakis from the School of Public Health and the Charles Perkins Centre said
“The study shows exercise that promotes muscular strength may be just as important for health as aerobic activities like jogging or cycling.”
“And ...it may be even more vital when it comes to reducing risk of death from cancer.”
“Unfortunately, less than 19 percent of Australian adults do the recommended amount of strength-based exercise,” said Associate Professor Stamatakis.
The analysis also showed exercises performed using one’s own body weight without specific equipment were just as effective as gym-based training.
“When people think of strength training they instantly think of doing weights in a gym, but that doesn’t have to be the case.
“Many people are intimidated by gyms, the costs or the culture they promote, so it’s great to know that anyone can do classic exercises like triceps dips, sit-ups, push-ups or lunges in their own home or local park and potentially reap the same health benefits.”
The research, published in the American Journal of Epidemiology today, is based on a pooled population sample of over 80,306 adults with data drawn from the Health Survey for England and Scottish Health Survey, linked with the NHS Central Mortality Register.
2 weeks 5 days ago
Pelvic physiotherapy is effective in managing pelvic organ prolapse, painful sex, back pain, endometriosis, incontinence and a number of women’s health issues.
Research by the Australian Physiotherapy Association shows an 84% success rate in the treatment of incontinence. Unfortunately women continue to suffer, with incontinence in women being the largest factor for admittance into nursing homes.
Pelvic organ prolapse and incontinence affects one in three women, which makes these issues common.
Merinda Rigoll, our Physiotherapist working in Women’s Health and Continence, has extensive experience and expertise in this area, and will tailor treatment to meet your individual needs.
2 weeks 6 days ago
How To Reduce Your Risk of:
type 2 diabetes by 40 per cent
breast cancer by 20 per cent
colon cancer by 30 per cent
depression by 30 per cent
hip fracture by 68 per cent
dementia by 30 per cent.
Find out How....https://choose.physio/your-wellbeing/physical-activity
3 weeks 1 day ago
How the Brain Controls Movement
Researchers have for the First Time confirmed how Neurons Control Muscle Movement.
Your Brain is a Mysterious Supercomputer.
Billions of neurons buzz within an intricate network that controls your every thought, feeling, and movement.
And we've only just begun to understand how it all works.
Recent research may help patients with cerebral palsy, Lou Gehrig's disease, and other ailments that lead to loss of muscle function.
To conquer the puzzle of the human mind, researchers at Northeastern's Center for Complex Network Research start with simpler models. The brain of a nematode worm, for example, has about 300 neurons and 2,200 synapses.
Using the nematode as one test system, scientists at CCNR have spent the past several years understanding how a network controls itself -- for instance, which individual neurons in the worm's brain are in charge of a backward wiggle.
Medical Research Council Laboratory of Molecular Biology in Cambridge, England, tested the findings by killing individual neurons from the nematode brain with a laser. They then measured the effects of these "microsurgeries" on behavior.
"This provides new insight into how individual neurons control body movements," said William Schafer, a scientist at the MRC lab who led the laser experiments.
Researchers will aim to translate a version of the nematode control model to the human brain.
This would be life-changing for patients with cerebral palsy, Lou Gehrig's disease, and other ailments that lead to loss of muscle function.
Northeastern University. "Fundamental rules for how the brain controls movement." ScienceDaily. ScienceDaily, 26 October 2017. <www.sciencedaily.com/releases/2017/10/171026135333.htm>, and
3 weeks 4 days ago
NEW MEDICAL TECH
Game-Changing Lab-on-a-Chip uses Smartphone to Quickly Detect Multiple Diseases
The low-cost, portable, smartphone-integrated system provides a promising solution to address the challenges of infectious disease diagnostics, especially in resource-limited settings or in situations where a result is needed immediately.
The system uses the rear-facing camera of the smartphone interfacing with a credit card sized test kit.
It has already detected the presence of Zika, Dengue, and Chikungunya virus in a droplet of whole blood, as well as four horse respiratory diseases.
Infectious diseases remain the world's top contributors to human death and disability, and with recent outbreaks of Zika virus infections, there is a keen need for simple, sensitive, and easily translatable point-of-care tests.
The technology is intended to enable clinicians to rapidly diagnose disease in their office or in the field, resulting in earlier, more informed patient management decisions, while markedly improving the control of disease outbreaks.
Weili Chen, Hojeong Yu, Fu Sun, Akid Ornob, Ryan Brisbin, Anurup Ganguli, Vinay Vemuri, Piotr Strzebonski, Guangzhe Cui, Karen J. Allen, Smit A. Desai, Weiran Lin, David M. Nash, David L. Hirschberg, Ian Brooks, Rashid Bashir, Brian T. Cunningham. Mobile Platform for Multiplexed Detection and Differentiation of Disease-Specific Nucleic Acid Sequences, Using Microfluidic Loop-Mediated Isothermal Amplification and Smartphone Detection. Analytical Chemistry, 2017; DOI: 10.1021/acs.analchem.7b02478
A. Ganguli, A. Ornob, H. Yu, G. L. Damhorst, W. Chen, F. Sun, A. Bhuiya, B. T. Cunningham, R. Bashir. Hands-free smartphone-based diagnostics for simultaneous detection of Zika, Chikungunya, and Dengue at point-of-care. Biomedical Microdevices, 2017; 19 (4) DOI: 10.1007/s10544-017-0209-9, and
1 month 10 hours ago
There's lots of reasons to Choose Physio
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Physios are well known for their ability to treat musculoskeletal and sporting injuries. What a lot of people don’t know is that they can also treat a wide variety of other conditions: women’s, men’s and pelvic health issues such as incontinence, neurological and cardiothoracic conditions, oncology—the list goes on. #choosephysio www.choose.physio