Articles tagged with Cranium
A new species of extinct otter, Siamogale melilutra, has been discovered in China with a body size comparable to that of a wolf. The discovery provides insights into the evolutionary history and functional morphology of this ancient lineage.
Researchers used CT scans to investigate the origin of pre-mammalian therapsids' distinctive canines, finding they were not used for fighting but for display behavior. The study suggests sexual selection played a crucial role in the evolution of mammals, dating back 300 million years.
A new method of evaluation, using the cephalic width-intercoronal distance ratio, has been recommended to help determine when surgical intervention is needed for infants with fused cranial sutures. This measurement indicates a potential need for surgery in cases where the front and back of the skull are not proportionate.
Scientists have discovered a new species of pterosaur from the Early Jurassic period in Patagonia, Argentina. The 'Allkauren koi' species boasts an intermediate state in brain evolution, shedding light on the origin and adaptation of flying reptiles.
A new transparent skull implant developed by UCR researchers allows for minimally invasive laser-based treatments for patients with brain disorders. The implant's biocompatibility and ability to endure bacterial infections make it a promising alternative to currently available cranial implants.
Researchers have discovered that ancient elasmosaurs, such as Aristonectes and Morturneria, used a comb-like structure in their jaws to strain out food particles from the water. This unique feeding style is similar to that of modern baleen whales and allows for efficient collection of food particles.
A recent study published in Neurosurgery found that brain surgery quality of care is not accurately reflected by patient satisfaction ratings. Despite high overall satisfaction rates, many patients experienced postoperative complications, highlighting the need for more reliable measures of quality care.
Researchers will investigate coronal nonsyndromic craniosynostosis, a common birth defect causing facial and cranial dysmorphology. The study aims to identify new genes and networks driving this condition and develop a predictive computational model of head growth.
A 55,000-year-old skull discovered in Israel's West Galilee provides evidence of modern humans and Neanderthals co-inhabiting the area. The skull, containing a relatively small brain, shares features with modern man's skull, suggesting possible interbreeding between the two species.
A new fossil analysis reveals that Vintana sertich was a badger-sized, herbivorous animal with keen senses of smell and vision. The study sheds light on the diversity of Mesozoic mammals and their paleoecology.
The fossilized skull of Vintana sertichi, a 66- to 70-million-year-old groundhog-like creature, offers significant insights into the lifestyle and relationships of early mammals. The analysis reveals that Vintana likely had large eyes, a good sense of smell, and could eat a diet of roots, seeds, or nut-like fruits.
A recent study published in JAMA Psychiatry has identified the risk factors for post-traumatic stress disorder (PTSD) after an accident. The research found that 9% of injured people develop PTSD, with symptoms such as headaches, pain, and anxiety persisting for months after the incident.
A new study suggests cranial ultrasound is more sensitive and equally specific as temporal artery biopsy in diagnosing giant cell arteritis. The test has high predictive accuracy, making it a promising replacement for the current gold standard.
Researchers studied embryonic development in 134 species, discovering that brain size affects cranial bone formation. Individual bones develop in different phases characteristic to each species.
Apert syndrome is caused by FGFR2 mutations, leading to early bone fusion, mid-facial deformation, and cognitive impairment. Researchers found that 3D imaging can estimate growth patterns and anticipate surgical outcomes, potentially improving patient-centered care.
A collaborative study out of George Washington University found early signs of feeding and swallowing disruption in children with neurodevelopmental disorders, including autism. The research suggests that cranial nerves controlling food intake and swallowing are not developing correctly, leading to mis-coordination.
New research confirms Ardi's close evolutionary relationship to humans, revealing a pattern of similarity linking it to Australopithecus and modern humans. The study shows that the human cranial base pattern is at least a million years older than previously thought, with implications for our understanding of human evolution.
Researchers discovered 45 trepanation procedures on human remains in Peru's Andahuaylas caves dating back to AD 1000-1250. The ancient practice was used to treat various ailments and conditions, with varying techniques employed by practitioners.
A new study from North Carolina State University has raised doubts about the effectiveness of using skull shape for positive identifications. Researchers found that only 47% of participants accurately matched antemortem and postmortem X-rays, highlighting the limitations of relying solely on cranial vault outlines.
A team of scientists has announced a new juvenile fossil cranium of the ancient ape species Lufengpithecus from Shuitangba, China. The discovery provides significant insights into the evolution and extinction of apes during the Miocene epoch.
Research suggests racial/ethnic disparities exist in the use of cranial CT scans among children with minor blunt head trauma, particularly for those at lowest or intermediate risk. Children from white non-Hispanic backgrounds may be more likely to undergo the procedure, while those from black or Hispanic backgrounds have lower odds.
The study found that woodpeckers' cranial bones have a higher ultimate strength than larks, thanks to more plate-like spongy bone. This structure helps resist deformation during pecking, reducing stress on the brain. The beaks of both birds exhibit similar ultimate strengths.
A 14mm ridged lesion in the Maba cranium, a 126,000-year-old East Asian human fossil from China, suggests evidence of interhuman aggression and human-induced trauma. The wound's remodelled and healed condition indicates survival of a serious brain injury.
A study by researchers at UC Davis found that white children are more likely to receive CT scans for minor head trauma than Hispanic and African-American children. This overuse of CT scans may lead to unnecessary radiation exposure and increased health-care costs.
African-American and Hispanic children are less likely to receive cranial CT scans following minor head trauma compared to white children. Higher rates of CT scans may represent overuse and increased radiation exposure among white children in low-risk populations.
Australopithecus sediba fossils display both primitive and human-like traits, challenging long-standing theories about human evolution. The discovery of well-preserved hand and foot bones provides insights into the species' tool-making abilities.
A new X-ray scan has provided the highest resolution and most accurate image of an early human ancestor's brain case. The study challenges previous models of brain evolution by revealing a surprisingly small brain volume and a mix of characteristics that resemble both humans and chimpanzees.
Dr. Sandra Garvie-Lok, an anthropologist from the University of Alberta, analyzed human remains found in a tunnel in ancient Nemea, Greece, to determine the cause of death. Her findings suggest that the victim was likely an eyewitness to the Slavic invasion and died from injuries sustained during the event.
A long-forgotten fossil skull has provided crucial clues to the early stages of tyrannosaur evolution. Proceratosaurus, an ancient ancestor of Tyrannosaurus rex, shares many features with its famous descendant, including powerful biting apparatus and a bulky skull.
A new treatment protocol using dexamethasone instead of prednisone and less intensive chemotherapy showed similar event-free survival in non-high risk patients but better results in high-risk patients, reducing the risk of side effects. Overall, the treatment strategy improved survival rates for children with acute lymphoblastic leukemia.
Researchers found that HDAC8 deletion causes cranial NCC deficiency, leading to skull dysmorphism and perinatal death. HDAC8 represses homeobox transcription factors that pattern the frontal skull, highlighting its crucial role in epigenetic control of vertebrate skull development.
A recent study published in the New England Journal of Medicine reveals that personalized chemotherapy regimens can effectively treat childhood acute lymphoblastic leukemia (ALL) without cranial radiation. The study, conducted by researchers at St. Jude Children's Research Hospital, found a cure rate of 90% for all patients, with impro...
A new study reveals that lithium promotes DNA repair in irradiated mice, protecting nerves in the hippocampus by decreasing double-strand DNA breaks. Targeted therapies to enhance DNA repair may provide an avenue for future therapeutic development.
Researchers use 3D modeling to compare cranial features, concluding Homo floresiensis is a distinct species. The study suggests the 'hobbit' species may have undergone size reduction after branching off from Homo erectus.
A recent discovery in Ethiopia's Gona region has challenged previous estimates of Homo erectus infant head size, indicating a possible increase in brain capacity. The findings, published in Science, suggest that the ancient human ancestor may have been born with brains comparable to those of modern humans.
The study reveals that the Liujiang brain shares morphological features with modern humans, including a round shape and enlarged frontal lobes. The virtual endocast also shows a high brain capacity, suggesting a Late Homo sapiens classification.
A 35,000-year-old European skull found in Romania has been analyzed, revealing that it exhibits both modern and archaic features. The discovery supports the idea of human evolution and suggests that early modern humans interbred with Neanderthals.
Four adults received highly concentrated, unlicensed botulinum preparation for cosmetic injections, resulting in toxin levels up to 40 times the estimated human lethal dose. Botulism can cause respiratory failure and death if left untreated.
A team of researchers finds that the skeletal remains of LB1, previously claimed to be a new species, actually belong to the ancestors of modern human pygmies. The study reveals microcephaly and growth abnormalities, which were initially misinterpreted as evidence of a new species.
Researchers used MRI to study canine cranial nerves, enabling earlier disease recognition and imaging of nerve nuclei. The study sheds light on the challenges of identifying small nerves using conventional imaging modalities.
The Mladec assemblage is the oldest directly dated substantial collection of modern human remains in Europe, dating back approximately 31,000 years. The fossils confirm that early modern humans emerged in Central Europe during the Aurignacian period and provide valuable insights into their ancestry.
A team of researchers reanalyzed the data from Boas' 1912 study on cranial measurements, finding that genetic factors dominate variation in head shape. The study's results contradict Boas' claims that environmental influences are the primary driver of cranial plasticity.