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Cammy Torgenrud

Sins of the Grandfathers - Newsweek - Sharon Begley - 0 views

www.newsweek.com/...your-sperm-and-eggs.print.html

neuroscience development epigenetics naturenurture psychology

shared by Cammy Torgenrud on 03 Nov 10 - No Cached
  • the life experiences of grandparents and even great-grandparents alter their eggs and sperm so indelibly that the change is passed on to their children, grandchildren, and beyond. It’s called transgenerational epigenetic inheritance
  • the phenomenon in which something in the environment alters the health not only of the individual exposed to it, but also of that individual’s descendants.
  • Other labs, too, are finding that experiences—everything from a lab animal being exposed to a toxic chemical to a person smoking, being malnourished in childhood, or overeating—leaves an imprint on eggs or sperm, an imprint so tenacious that it affects not only those individuals’ children but their grandchildren as well.
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  • The result raises the intriguing possibility that the childhood-obesity epidemic is at least in part due to alterations in sperm caused by fathers-to-be eating a high-fat diet. After all, while it’s fine to blame kids’ couch-potato ways and fattening diets, that does not explain why obesity in babies has risen 73 percent since 1980.
  • how good your memory is during adolescence “can be influenced by environmental stimulation experienced by one’s mother during her youth
Cammy Torgenrud

Differences in brain development between males and females may hold clues to mental hea... - 1 views

www.physorg.com/...brain-males-females-clues.html

brain neuroscience gender science psychology

shared by Cammy Torgenrud on 18 Nov 10 - No Cached
  • female rats have about 30 to 50 percent more glial cells in the amygdala region of the temporal lobe of the brain than their male litter mates
  • females had lower amounts of endocannabinoids, which have been dubbed the brain's own marijuana because they activate cannabinoid receptors that are also stimulated by THC
  • female rats also played 30 to 40 percent less than male rats
Cammy Torgenrud

Zapping the brain sparks bright ideas - life - 03 February 2011 - New Scientist - 5 views

www.newscientist.com/...brain-sparks-bright-ideas.html

brain tDCS learning problem-solving

shared by Cammy Torgenrud on 04 Feb 11 - No Cached
  • Transcranial direct current stimulation (tDCS) is a safe and non-invasive method of temporarily altering the activity of neurons by passing weak currents through electrodes on the scalp
  • Excitation of the right hemisphere and inhibition of the left made the participants three times more likely to figure out the correct answer within 6 minutes compared with those who received the sham treatment.
  • right ATL is associated with insight and novel meaning. It also backs up previous findings that the left ATL is involved in processing routine strategies and the maintenance of existing hypotheses
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