Contact Information:

Media Contact

John Brhel
jbrhel@binghamton.edu
607-777-3280

Twitter: binghamtonu

http://www.binghamton.edu




Kredyty mieszkaniowe Kredyty mieszkaniowe

Sprawdź aktualny ranking najlepszych kredytów mieszkaniowych w Polsce - atrakcyjne kredytowanie nieruchomości.

PRESS-NEWS.org - Press Release Distribution
FREE PRESS RELEASES DISTRIBUTION
RSS - Press News Release
Add Press Release

Study reveals human body has gone through four stages of evolution


2015-08-31
(Press-News.org) BINGHAMTON, NY - Research into 430,000-year-old fossils collected in northern Spain found that the evolution of the human body's size and shape has gone through four main stages, according to a paper published this week.

A large international research team including Binghamton University anthropologist Rolf Quam studied the body size and shape in the human fossil collection from the site of the Sima de los Huesos in the Sierra de Atapuerca in northern Spain. Dated to around 430,000 years ago, this site preserves the largest collection of human fossils found to date anywhere in the world. The researchers found that the Atapuerca individuals were relatively tall, with wide, muscular bodies and less brain mass relative to body mass compared to Neanderthals. The Atapuerca humans shared many anatomical features with the later Neanderthals not present in modern humans, and analysis of their postcranial skeletons (the bones of the body other than the skull) indicated that they are closely related evolutionarily to Neanderthals.

"This is really interesting since it suggests that the evolutionary process in our genus is largely characterized by stasis (i.e. little to no evolutionary change) in body form for most of our evolutionary history," wrote Quam.

Comparison of the Atapuerca fossils with the rest of the human fossil record suggests that the evolution of the human body has gone through four main stages, depending on the degree of arboreality (living in the trees) and bipedalism (walking on two legs). The Atapuerca fossils represent the third stage, with tall, wide and robust bodies and an exclusively terrestrial bipedalism, with no evidence of arboreal behaviors. This same body form was likely shared with earlier members of our genus, such as Homo erectus, as well as some later members, including the Neanderthals. Thus, this body form seems to have been present in the genus Homo for over a million years.

It was not until the appearance of our own species, Homo sapiens, when a new taller, lighter and narrower body form emerged. Thus, the authors suggest that the Atapuerca humans offer the best look at the general human body shape and size during the last million years before the advent of modern humans.

INFORMATION:

The study, titled "Postcranial morphology of the middle Pleistocene humans from Sima de los Huesos, Spain," was published in Proceedings of the National Academy of Sciences.


ELSE PRESS RELEASES FROM THIS DATE:

Older people getting smarter, but not fitter

2015-08-31
Older populations are scoring better on cognitive tests than people of the same age did in the past --a trend that could be linked to higher education rates and increased use of technology in our daily lives, say IIASA population researchers. People over age 50 are scoring increasingly better on tests of cognitive function, according to a new study published in the journal PLOS ONE. At the same time, however, the study showed that average physical health of the older population has declined. The study relied on representative survey data from Germany which measured cognitive ...

Gene leads to nearsightedness when kids read

Gene leads to nearsightedness when kids read
2015-08-31
NEW YORK, NY (August 31, 2015) -- Vision researchers at Columbia University Medical Center have discovered a gene that causes myopia, but only in people who spend a lot of time in childhood reading or doing other "nearwork." Using a database of approximately 14,000 people, the researchers found that those with a certain variant of the gene - called APLP2 - were five times more likely to develop myopia in their teens if they had read an hour or more each day in their childhood. Those who carried the APLP2 risk variant but spent less time reading had no additional risk ...

Dialect influences Appalachian students' experiences in college

2015-08-31
An in-depth dialect study from NC State University researchers shows that some students from rural Appalachia feel that their dialects put them at a disadvantage in a college classroom, even in the South. The Journal of Higher Education study raises important questions about language as a type of diversity that isn't always celebrated on campus, says lead author Stephany Dunstan, a linguist and associate director of assessment at NC State. In their interviews, some rural Appalachian students recalled times when they spoke up in class only to be met with snickers for ...

We've all got a blind spot, but it can be shrunk

2015-08-31
You've probably never noticed, but the human eye includes an unavoidable blind spot. That's because the optic nerve that sends visual signals to the brain must pass through the retina, which creates a hole in that light-sensitive layer of tissue. When images project to that precise location, we miss them. Now researchers reporting in the Cell Press journal Current Biology on August 31 have some good news: this blind spot can be effectively "shrunk" with training, despite the fact that the hole in our visual field cannot be. The findings raise the possibility that similar ...

Heart rate, heart rate variability in older adults linked to poorer function

2015-08-31
A higher resting heart rate and lower heart rate variability in older adults at high risk of heart disease are associated with poorer ability to function in daily life as well as future decline, according to a new research in CMAJ (Canadian Medical Association Journal). "It has been hypothesized that heart rate and heart rate variability are markers of frailty, an increased vulnerability to stressors and functional decline," writes Dr. Behnam Sabayan, Department of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, the Netherlands, with coauthors. "However, ...

Lyme disease testing: Canadians may receive false-positives from some US labs

2015-08-31
Lyme disease is becoming increasingly common in Canada, and Canadians with Lyme disease symptoms may seek diagnoses from laboratories in the United States, although many of the results will be false-positives, according to a commentary in CMAJ (Canadian Medical Association Journal). "Patients with chronic subjective symptoms without a diagnosis can be vulnerable and desperate for an answer as to the cause of their illness," writes Dr. Dan Gregson, divisions of Medical Microbiology and Infectious Diseases, departments of Pathology and Laboratory Medicine, and Medicine, ...

Temple Lung Center study shows benefits for COPD patients using digital health application

2015-08-31
(Philadelphia, PA) - Early intervention facilitated by a digital health application for reporting symptoms of Chronic Obstructive Pulmonary Disease (COPD) provides key benefits for patients, according to the results of a Temple-led, two-year clinical study. COPD is a serious chronic respiratory disease that is often characterized by flare-ups, called acute exacerbations, in which the patient may experience increased coughing, mucus, shortness of breath, wheezing, and a feeling of tightness in their chest. If exacerbation symptoms are not detected and treated in a timely ...

Raising pay can reduce smoking rates

2015-08-31
(SACRAMENTO, Calif.) -- In addition to restricting when and where tobacco is used at work, UC Davis Health System research shows that employers can do something else to reduce smoking: raise wages. Published in the August issue of the Annals of Epidemiology, the study found that a 10 percent increase in wages leads to about a 5 percent drop in smoking rates among workers who are male or who have high school educations or less and improves their overall chances of quitting smoking from 17 to 20 percent. "Our findings are especially important as inflation-adjusted wages ...

Magnetic stimulation effective in helping Parkinson's patients walk

2015-08-31
Amsterdam, NL, August 31, 2015 - About 50% of patients with Parkinson's disease (PD) experience freezing of gait (FOG), an inability to move forward while walking. This can affect not only mobility but also balance. In a new study published in Restorative Neurology and Neuroscience, researchers report that repetitive transcranial magnetic stimulation (rTMS) can reduce FOG and improve other motor skills in PD patients. In a study conducted by researchers at the Sungkyunkwan University School of Medicine, Seoul, Korea, 17 PD patients experiencing FOG were treated with either ...

Medication treatment for opioid use disorders in primary care increases patient access

2015-08-31
BOSTON - Clinicians at Boston Medical Center (BMC) showed that expanding the number of sites offering office-based opioid treatment with buprenorphine (OBOT B) utilizing addiction nurse care managers, trainings and technical support resulted in more physicians becoming waivered to prescribe buprenorphine and more patients accessing treatment at sites across Massachusetts. This model, highlighted online in the Journal of Substance Abuse Treatment, demonstrates the efficacy of this medication-assisted treatment modality as a sustainable way to treat greater numbers of patients ...

LAST 30 PRESS RELEASES:

How your brain decides blame and punishment -- and how it can be changed

Uniquely human brain region enables punishment decisions

Pinpointing punishment

Chapman University publishes research on attractiveness and mating

E-cigarettes: Special issue from Nicotine & Tobacco Research

Placental problems in early pregnancy associated with 5-fold increased risk of OB & fetal disorders

UT study: Invasive brood parasites a threat to native bird species

Criminals acquire guns through social connections

Restoring ocean health

Report: Cancer remains leading cause of death in US Hispanics

Twin study suggests genetic factors contribute to insomnia in adults

To be fragrant or not: Why do some male hairstreak butterflies lack scent organs?

International team discovers natural defense against HIV

Bolivian biodiversity observatory takes its first steps

Choice of college major influences lifetime earnings more than simply getting a degree

Dominant strain of drug-resistant MRSA decreases in hospitals, but persists in community

Synthetic biology needs robust safety mechanisms before real world application

US defense agencies increase investment in federal synthetic biology research

Robots help to map England's only deep-water Marine Conservation Zone

Mayo researchers identify protein -- may predict who will respond to PD-1 immunotherapy for melanoma

How much water do US fracking operations really use?

New approach to mammograms could improve reliability

The influence of citizen science grows despite some resistance

Unlocking secrets of how fossils form

What happens on the molecular level when smog gets into the lungs?

Using ultrasound to clean medical instruments

Platinum and iron oxide working together get the job done

Tiny silica particles could be used to repair damaged teeth, research shows

A quantum lab for everyone

No way? Charity's logo may influence perception of food in package

[Press-News.org] Study reveals human body has gone through four stages of evolution
Press-News.org is a service of DragonFly Company. All Rights Reserved.
Issuers of news releases are solely responsible for the accuracy of their content.