CheepHeep Posted February 18, 2017 Share Posted February 18, 2017 Cheep News Struggled to find something to post that would interest you guys, so I settled for this. Are you guys right or left handed? Wanna know why?... __________________________________________________________________________________________________________________________ A preference for the left or the right hand might be traced back to that asymmetry. "These results fundamentally change our understanding of the cause of hemispheric asymmetries," conclude the authors. The team report about their study in the journal eLife. Preference in the womb To date, it had been assumed that differences in gene activity of the right and left hemisphere might be responsible for a person's handedness. A preference for moving the left or right hand develops in the womb from the eighth week of pregnancy, according to ultrasound scans carried out in the 1980s. From the 13th week of pregnancy, unborn children prefer to suck either their right or their left thumb. Arm and hand movements are initiated via the motor cortex in the brain. It sends a corresponding signal to the spinal cord, which in turn translates the command into a motion. The motor cortex, however, is not connected to the spinal cord from the beginning. Even before the connection forms, precursors of handedness become apparent. This is why the researchers have assumed that the cause of right respective left preference must be rooted in the spinal cord rather than in the brain. The influence of environmental factors The researchers analysed the gene expression in the spinal cord during the eighth to twelfth week of pregnancy and detected marked right-left differences in the eighth week -- in precisely those spinal cord segments that control the movements of arms and legs. Another study had shown that unborn children carry out asymmetric hand movements just as early as that. The researchers, moreover, traced the cause of asymmetric gene activity. Epigenetic factors appear to be at the root of it, reflecting environmental influences. Those influences might, for example, lead to enzymes bonding methyl groups to the DNA, which in turn would affect and minimise the reading of genes. As this occurs to a different extent in the left and the right spinal cord, there is a difference to the activity of genes on both sides. ___________________________________________________________________________________________________________________ Post if you are right or left handed. Time to add some pointless statistics to the clans database source: https://www.sciencedaily.com/releases/2017/02/170217095904.htm Quote Link to comment Share on other sites More sharing options...
audrey Posted February 18, 2017 Share Posted February 18, 2017 Lefty here. I always had trouble with right from left side (even now, it takes me about 3-4 seconds to get the sides right ), sides of the world, generally getting around in space and time. Couldn't tell the time until I was like 13. I always thought this general disorientment is due to my lefthandiness. 3 Quote Link to comment Share on other sites More sharing options...
Krusnik87 Posted February 18, 2017 Share Posted February 18, 2017 Post if you are right or left handed. Time to add some pointless statistics to the clans database You could have created a poll you newbie 1 Quote Link to comment Share on other sites More sharing options...
Raw64life Posted February 18, 2017 Share Posted February 18, 2017 Lefty reporting in, although I'm not 100% lefty. I write with my left hand but I throw with my right hand. 3 Quote Link to comment Share on other sites More sharing options...
JuZu Posted February 18, 2017 Share Posted February 18, 2017 Lefty here 2 Quote Link to comment Share on other sites More sharing options...
CheepHeep Posted February 18, 2017 Author Share Posted February 18, 2017 Lefty here. I always had trouble with right from left side (even now, it takes me about 3-4 seconds to get the sides right ), sides of the world, generally getting around in space and time. Couldn't tell the time until I was like 13. I always thought this general disorientment is due to my lefthandiness. OMG OMG OMG....( I sound like Audrey ) I swear I totally knew you were left handed....i swear. Im a psychic chicken. Honest. Quote Link to comment Share on other sites More sharing options...
CheepHeep Posted February 18, 2017 Author Share Posted February 18, 2017 You could have created a poll you newbie Done! Quote Link to comment Share on other sites More sharing options...
Krusnik87 Posted February 18, 2017 Share Posted February 18, 2017 Done! Argh you forgot those who are ambidextrous! poor them :/ Quote Link to comment Share on other sites More sharing options...
CheepHeep Posted February 18, 2017 Author Share Posted February 18, 2017 Argh you forgot those who are ambidextrous! poor them :/ Anything else nub? Quote Link to comment Share on other sites More sharing options...
audrey Posted February 18, 2017 Share Posted February 18, 2017 OMG OMG OMG....( I sound like Audrey ) I swear I totally knew you were left handed....i swear. Im a psychic chicken. Honest. Hah. How did you know now? Quote Link to comment Share on other sites More sharing options...
L3ftY. Posted February 18, 2017 Share Posted February 18, 2017 Im a psycho chicken. Honest. Lefty here - for golf, hockey, batting. Right handed for writing, throwing. 2 Quote Link to comment Share on other sites More sharing options...
CheepHeep Posted February 18, 2017 Author Share Posted February 18, 2017 Hah. How did you know now? I told you, I am psychic. I have this talent of just knowing things. Actually its a calculated guess. I assessed your online behaviour which include the structure behind your posts, your attitude as well as a couple of other characteristics that you portray that lead me to believe you were a left hand dominant person. I SWEAR TO GOD. wait i am god.... Quote Link to comment Share on other sites More sharing options...
Sisje Posted February 18, 2017 Share Posted February 18, 2017 Right handed I guess, however I eat like a lefty (mother is left handed and I honestly can't figure out how to eat right handed xD) and I try to use my left hand for certain other things as well, like at work if your hand/arm gets tired it's quite handy to be able to use both Quote Link to comment Share on other sites More sharing options...
Almondo Posted February 18, 2017 Share Posted February 18, 2017 It depends what am i useing my hands for Quote Link to comment Share on other sites More sharing options...
Anton Chigurh Posted February 18, 2017 Share Posted February 18, 2017 Empty-handed 2 Quote Link to comment Share on other sites More sharing options...
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