Daily non-political popular news in brief.
Brains reflect sex differences
05-10-2007 · EurekAlert!When male primates tussle and females develop their social skills it leaves a permanent mark -- on their brains. According to research published in the online open access journal BMC Biology, brain structures have developed due to different pressures on males and females to keep up with social or competitive demands.
Read more »
Keywords: brains, reflect, sex, differences, brain, difference
« Previous | Next »
Similar news on "Brains reflect sex differences":
- Sex on the brain
05-07-2007 · EurekAlert!
New evidence on sex differences in people's brains and behaviors emerges with the publication of results from the British Broadcasting Corporation's (BBC) Sex ID Internet Survey. Survey questions and tests focused on participants' sex-linked cognitive abilities, personality traits, interests, sexual attitudes and behavior, as well as physical traits. The Archives of Sexual Behavior№ has devoted a special section in its April 2007 issue to research papers based on the BBC data.
Similar news · Read more »
- How are phenotypic differences between sexes related to phenotypic variation within sexes?
01-10-2007 · EurekAlert!
It has long been recognized that sexually dimorphic traits -- traits that are systematically different between members of different sex in the same species, such as peacocks' tail feathers -- tend to vary a great deal among individual males, and that much of this within-sex variation depends on individual condition. Indeed, theory predicts that sexual dimorphism will evolve based on condition dependence so that, among traits, a more pronounced difference between male and female should be associated with a stronger response to variation in condition.
Similar news · Read more »
- Neuron cell stickiness may hold key to evolution of the human brain
11-02-2006 · EurekAlert!
The stickiness of human neurons may have been a key factor in why the human brain evolved beyond the brains of our primate relatives. In a study comparing the genomes of humans, chimpanzees and other vertebrates, researchers at the US Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and Joint Genome Institute (JGI) found a strikingly high degree of genetic differences in DNA sequences that appear to regulate genes involved in nerve cell adhesion molecules.
Similar news · Read more »
- Sex differences in the brain's serotonin system
02-13-2008 · EurekAlert!
A new thesis from the Swedish medical university Karolinska Institutet shows that the brain's serotonin system differs between men and women. The scientists who conducted the study think that they have found one of the reasons why depression and chronic anxiety are more common in women than in men.
Similar news · Read more »
- Measuring brain activity for emotional markers that may indicate risk for developing alcoholism
11-26-2006 · EurekAlert!
New research uses an electroencephalogram to look for a connection between brain activity thought to reflect trait-like differences in emotionality and alcoholism. Findings show an asymmetry of activity in the left and right frontal areas of the brain. The pattern of asymmetry found is similar to that found in individuals with depression.
Similar news · Read more »
- Brains scans of symptomatic Gulf War veterans show differences
05-01-2007 · EurekAlert!
Veterans of the first Gulf War who returned with multiple health symptom complaints show significant differences in brain structures from their fellow returnees without high numbers of health symptoms, according to research that will be presented at the American Academy of Neurology's 59th Annual Meeting in Boston, April 28-May 5, 2007.
Similar news · Read more »
- Different approach needed to protect brains of premature infants
04-10-2007 · EurekAlert!
A study of how the brain of a premature infant responds to injury has found vulnerabilities similar to those in the mature brain but also identified at least one significant difference, according to neuroscientists and neonatologists at Washington University School of Medicine in St. Louis. More than two percent of babies are born before the completion of their eighth month of gestation, and up to half of these infants suffer brain injury.
Similar news · Read more »
- Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle
02-02-2007 · EurekAlert!
Fluctuations in sex hormone levels during women's menstrual cycles affect the responsiveness of their brains' reward circuitry, an imaging study has revealed. While women were winning rewards, their circuitry was more active if they were in a menstrual phase preceding ovulation and dominated by estrogen, compared to a phase when estrogen and progesterone are present. These first pictures of sex hormones influencing reward-evoked brain activity in humans may provide insights into mood and anxiety disorders.
Similar news · Read more »
- Study of language use in children suggests sex influences how brain processes words
11-27-2006 · EurekAlert!
Boys and girls tend to use different parts of their brains to process some basic aspects of grammar, according to the first study of its kind, suggesting that sex is an important factor in the acquisition and use of language.
Similar news · Read more »
- Stroke study sheds light on left-right brain divide
06-10-2007 · EurekAlert!
Research into the effects of strokes has furthered our understanding of the different roles of the left and right sides of our brains. A study led by the University of Exeter has highlighted differences in the ability of people to perform basic tasks, depending on whether the left or right sides of their brains have been damaged by a stroke. The research identified the role of the right side of the brain in noticing and correcting errors.
Similar news · Read more »