what's the buzz


According to the research team from Westphalian Wilhelms University, individually designed music therapy may help reduce the noise levels experienced by people who suffer from tinnitus.
Tinnitus causes ringing, buzzing, roaring, hissing or whistling.
In the year-long study, participants’ favourite music were altered to remove notes which matched the frequency of the ringing in their ears.
The individuals reported a drop in the loudness of their tinnitus.
The theory behind the new technique is that removing the spectrum of noise associated with tinnitus from the music reduces activity in the brain relating to that frequency, alleviating the condition.
Lead researcher Dr Christo Pantev, from Westphalian Wilhelms University in Munster, said the approach specifically targeted the part of the brain responsible for tinnitus.
“The notched music approach can be considered as enjoyable, low cost, and presumably causal treatment that is capable of specifically reducing tinnitus loudness,” said Pantev.
“It could significantly complement widely-used and rather indirect psychological treatment strategies,” Pantev added.

Why we overeat despite being full
Wondering why do we overeat even when we are full? The answer to this question lies in our brains.
The new study conducted over mice showed that the so-called hunger hormone ghrelin works in the brain to make some people keep eating ‘pleasurable’ foods when they’re already full.
“What we show is that there may be situations where we are driven to seek out and eat very rewarding foods, even if we’re full, for no other reason than our brain tells us to,” said Dr Jeffrey Zigman, assistant professor of internal medicine and psychiatry at UT Southwestern and co-senior author of the study.
Scientists have previously linked increased levels of ghrelin to intensifying the rewarding or pleasurable feelings one gets from cocaine or alcohol.
Zigman said his team speculated that ghrelin might also increase specific rewarding aspects of eating.
According to him, rewards,  generally can be defined as things that make us feel better.
“They give us sensory pleasure, and they motivate us to work to obtain them. They also help us reorganise our memory so that we remember how to get them,” he said.
Drug-resistant urinary tract infections on the rise
Experts have raised concerns over a dramatic increase in the number of antibiotic-resistant bacteria, responsible for causing urinary tract infections. Dr Johann Pitout, University of Calgary, urges the medical community to monitor the spread of a multi-drug resistant bacterium before it becomes necessary to use more powerful antibiotics as a first response.
The researchers focussed their study on extended-spectrum ß-lactamases (ESBLs), which are bacterially-produced enzymes that confer resistance to penicillin-type antibiotics.
In the recent years there has been a drastic increase in community-acquired infections, caused by a single strain of ESBL-producing E coli. Pitout suggests that the rapid spread of this particular strain is due, at least in part, to international travel through high-risk areas such as the Indian subcontinent.
Pitout said using carbapenems as the first response to such infections increases the risk of inducing resistance to them in the community, nullifying some of our most powerful anti-bacterial strategies.

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