Researchers found that people mentally fill in gaps in familiar music with auditory imagery, and lyrics impact different auditory brain regions when reconstructing musical memories. The study extends previous work on auditory imagery and visual imagery, revealing a kind of auditory imagery typical of everyday experience.
The new center aims to connect scientists with teachers to effect meaningful change in student learning outcomes. The CCEN will conduct basic research on how people learn, focusing on brain mechanisms involved in language, science, reading, and math acquisition.
A Dartmouth researcher uses Amazon.com book ratings and reviews to study literary tastes, finding patterns in how readers react to different books. The analysis reveals predictable regularities in taste, including high grades for classics and books with large fan bases.
Computer scientists capture data on pen stroke patterns and aesthetic signatures from artworks, revealing consistencies and inconsistencies within single pieces or among works by the same artist. The technique confirms what art experts have concluded about the authorship of certain paintings.
A Dartmouth College study found that groups are less segregated at work than at home in greater Los Angeles, with interracial contact increasing during the workday. Notably, African Americans remain highly segregated both at work and home, while immigrants from Mexico and whites disperse more during the day.
The research highlights the importance of natural organohalogens, which are found in various organisms, including plants, animals, and insects. These compounds have medicinal properties, such as treating cancer, bacterial infection, and HIV, and serve vital purposes like hormones, pheromones, repellents, and natural pesticides.
The Dartmouth Flood Observatory expects a busy 2004 due to increasing flood events worldwide. The observatory's global inventory of flooding events may help assess global climate change.
Farid's algorithm uses statistical clues to detect tampering in digital images, making it harder for people to manipulate photos. The technology has the potential to prevent fake photos from influencing public opinion and trust, especially in news reports.
Researchers have developed new algorithms to interpret NMR data, revealing protein structure and molecular architecture. The tools require less data while producing highly accurate results.
The Dartmouth College fMRI Data Center has archived over 70 complete studies with data from 1,000 individuals. Researchers can access the repository at no charge, fulfilling over 1,200 requests. The collection contributes to understanding human cognition.
Researchers at Dartmouth College developed and tested three alternative breast imaging methods to learn about breast tissue structure and behavior. The non-invasive techniques include electrical impedance spectral imaging, microwave imaging spectroscopy, and near infrared spectral imaging.
Researchers propose experiments to test quantum effects in mechanical systems, achieving sensitivity close to the quantum limit. The goal is to understand how quantum and classical physics crossover, a long-standing scientific question.
Researchers developed an algorithm, Q5, using PCA and LDA to differentiate between healthy and diseased blood samples. The algorithm achieved virtually 100% accuracy for ovarian cancer and approximately 95% accuracy for prostate cancer.
Scientists have solved the puzzle of DHFR-TS, an enzyme needed by Cryptosporidium for reproduction. The study's results will help researchers design targeted drugs to combat the parasite and better understand related protozoan families.
The discovery of protein EB1 at the tip of Chlamydomonas flagella sheds new light on intraflagellar transport (IFT) and its regulation. IFT is crucial for flagellar growth and maintenance, and EB1 may play a key role in controlling the molecular transport system responsible for IFT.
A study by Dartmouth College finds black business owners are denied credit twice as often as similarly qualified white applicants. When approved, they typically face much higher interest rates than white borrowers.
A study at Dartmouth College suggests that harboring racial bias makes negotiating interracial interactions more cognitively demanding. The researchers found that brain activity in response to black faces predicted performance on cognitive tasks after actual interactions.
Researchers found that Arabidopsis plants from different latitudes exhibit significant variations in their circadian clocks, suggesting an adaptation to optimize fitness. The study identified five chromosomal regions contributing to the clock mechanism, including multiple genes that work together to control different parts of the process.
New study by Benjamin Burke and Arjun Heimsath predicts future soil production and erosion in similar landscapes, supporting previous research on chemical weathering's role. The researchers studied three sites in Australia and California, finding variability in chemical and physical weathering processes across small areas.
The ISTS report highlights vulnerabilities in the financial sector to large-scale physical events and targeted cyber attacks. The sector's reliance on critical infrastructures such as telecommunications and transportation systems increases its vulnerability to disruptions.
Researchers at Dartmouth College and GlycoFi have developed a technology to produce human-like glycoprotein structures in yeast, offering improved quality and quantity of pharmaceutical proteins. This breakthrough has the potential to increase patient access to life-saving drug therapies by overcoming production capacity bottlenecks.
A 17-year study published by Dartmouth College researchers confirms that lead in forests in the Northeast moves very slowly through the soil. The study found that lead applied to a mountain forest in Vermont had only moved down into the soil about seven centimeters, and will likely move even slower due to denser soil.
Pediatricians are urging parents to limit their child's exposure to smoking in movies to reduce the chances of starting to smoke and drink. Research suggests that adolescents see thousands of depictions of smoking by movie stars, influencing their attitude and behavior.
Researchers found new regions of the genome under circadian control using a technique called gene trapping, contradicting accepted dogma. The study suggests that clock-controlled mRNA synthesis may be more common than previously estimated, potentially leading to improved crop productivity and resistance to stressful conditions.
A study found that adolescents who see more smoking in movies are more likely to try smoking, with 52% of initiations attributed to movie exposure. Reducing adolescents' exposure to smoking in movies could significantly reduce the number of smokers.
A recent study published in Science found that the direction of another's gaze significantly affects how we perceive emotions. When viewing pictures of angry or fearful expressions, brain activity increases in the amygdala when the person is looking away or not making direct eye contact.
Researchers found that Arabidopsis plants respond differently to light and temperature signals, with one gene focused on photosynthesis and the other sensitive to temperature. This discovery suggests that plants have multiple internal clocks operating within a single tissue, allowing them to make critical decisions about flowering.
Researchers used fruit flies to study how age affects meiosis, a specialized cell division that gives rise to eggs and sperm. The study found that as fruit fly eggs 'age', errors in cell division increase, mirroring the phenomenon in humans, where birth defects like Down syndrome rise with maternal age.
Researchers at Dartmouth College have made a breakthrough in producing human therapeutics using a yeast-based protein expression system. By genetically engineering the yeast P. pastoris, they can now produce fully-humanized proteins with complex glycosylation structures.
A 2002 conjunctivitis outbreak at Dartmouth College revealed bacterial pinkeye caused by a strain of Streptococcus pneumoniae lacking protective capsule. Effective collaboration between doctors, health officials, and the CDC helped contain the outbreak through rapid communication and basic hygiene measures.
Researchers at Dartmouth College found that visual attention is specifically drawn to graspable objects, such as tools, and that this effect is more pronounced when these objects are on the right side. This discovery suggests a clear association between visual perception and motor systems in the brain.
A Dartmouth study found that better transportation decisions, such as driving fuel-efficient cars, could save more energy than recycling plastic and aluminum. Researchers used life-cycle analysis to measure the environmental benefits of different activities.
A combined approach of photodynamic therapy (PDT) and radiation shows promise in treating mouse tumors, with increased oxygenation improving the effectiveness of both treatments. The study used verteporfin, a light-activated drug that targets tumor tissue, leading to improved outcomes.
Researchers conclude dark energy is the dominant form of energy in the universe, contradicting observations of distant supernovae. The accelerating expansion of the universe can be explained by the presence of negative pressure in a vacuum, supporting the existence of dark energy.
A study of over 5000 5th-8th graders found that 28% were exposed to extremely violent R-rated movies, including scenes of rape and murder. The researchers suggest better oversight of movie industry marketing practices and parental monitoring are needed to protect children.
Scientists at Dartmouth College used fMRI experiments to locate the brain region that processes musical harmony, revealing a key area in the rostromedial prefrontal cortex. This discovery may help explain why music evokes strong emotions and behaviors.
Arjun Heimsath and Hany Farid developed a new method to create 3D models of remote regions using 2D photographs, making it easier for researchers to predict landslides and erosion rates. The technique has limitations, such as requiring clear images of the ground surface and a good point of view.
Researchers found that early bilingual exposure fosters a dual-language child's brain development, leading to full proficiency in both languages. Late exposure to a second language may hinder mastery if accompanied by restricted input.
The Dartmouth team is learning about breast tissue structure and behavior using magnetic resonance elastography, electrical impedance spectral imaging, microwave imaging spectroscopy, and near infrared spectral imaging. By combining these four techniques, they aim to provide a more complete picture of normal and abnormal breast tissue.
Researchers at Dartmouth College found that babies' babbling engages the language processing centers in the left hemisphere of the brain. The study used a technique called Laterality Index to measure mouth asymmetry and confirmed that this is linked to language development, not motor skills.
Dartmouth researchers identify a multi-tasking circadian protein called White Collar-1 that plays a critical role in regulating biological clocks. The protein is found to be both the photoreceptor and the mechanism that turns on the frequency gene, revealing a relatively simple process between light perception and gene activation.
The Dartmouth Institute for Security Technology Studies has released a report detailing the technology hurdles faced by cyber crime investigators. The report identifies seven areas of concern, including log analysis, internet protocol tracing, and emerging technologies, to aid in combating cyber attacks.
A 100,000-year climate cycle linked to the sun's magnetic activity has been discovered. The study found that periods of high solar magnetic activity correlate with warmer climates and vice versa.
Researchers at Dartmouth College found that algae helps to reduce the concentration of methylmercury in Daphnia and fish by dispersing it widely throughout single-celled algae cells. This discovery has significant implications for understanding mercury biomagnification in aquatic ecosystems.
A new study finds that restricting R-rated movies is associated with lower rates of adolescent alcohol and tobacco use. Children who are not restricted from watching R-rated movies are three times more likely to smoke or drink compared to those who have no restrictions.
A study analyzing stable isotopes in feathers reveals that black-throated blue warblers segregate according to their summer breeding locations in North America, linking them to specific Caribbean wintering grounds. This research provides crucial insights for developing effective conservation initiatives for Neotropical migrants.
Arjun Heimsath, a Dartmouth College researcher, measures dynamic land movement by calculating erosion rates in different parts of the world. Using cosmic isotopes extracted from rock and sediment samples, he determines how long material has been there and how fast it's eroding or breaking down.
Richard Wright seeks to understand how race, family dynamics, and income affect where interracial families live and their children identify. Preliminary analysis suggests that geography, class, and the racial makeup of parents influence these decisions.
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.
Two Dartmouth researchers, Erland Schulson and Carl Renshaw, propose a theory that brittle materials like rocks and ice crack in the same manner. They identify a specific type of cracking mechanism, 'comb' cracks, which leads to collapse in both ice and rock.